We'll be the last manufacturer of...
buggy whips
35mm film
VHS tapes
incandescent light bulbs
Being the last one standing in this case might be more like being the last of your species...
Being the last to die is not so much a "win"
A $60 light bulb... um no thanks
A well cared for LED "can" last a long time. I'll be willing to bet that the rest of the power electronics will not last as long. Especially based on the short life I have seen out of CFL's and yes even the "good" ones by GE Osram/Sylvania when you use electrolytic capacitors in the ballast you can only expect so much.
Buy the GE bulbs on sale for $1 and know they will not last anywhere near the 8 years the package claims but at that price... who cares? The difference in energy usage between the LED and a CFL is 1/2 a watt so it would take 80 years to overcome the $59 price difference. When the CFL dies in 2 years look at the price & performance of LED bulbs again.... chances are the performance is only going to go up and the price come down. Are you really going to keep running that LED bulb you bought today if N years from now you can get one twice as bright for the power consumed? So there really isn't much advantage to being an early adopter. Even if you are using incandescent bulbs the cost of lighting your home probably pales in comparison to your heating and air conditioning costs. $60 spent on attic insulation will likely give you bigger returns than one light bulb. Ten bulbs would be $600... money that would be better spent on a desuperheater for your ac/heat pump make your ac more efficient and get hot water as an added bonus.
LED bulbs are not "bad" it is just that there are other things that give you so much more return on your investment at present prices.
So anyway good job Phillips I won't be buying your bulb at current prices but there are plenty of people who stink at math that will.
Gasoline being expensive is no fun, but there are parts of the world where gasoline is expensive now... and life goes on.
Now if we see a shortage of gasoline where you can't get it at any price that is even more painful...
But worse yet than that would be a shortage of diesel... at that point you don't have to worry about going to work you'll be too busy trying not to starve/freeze to death.
See your food is transported to the store by trucks that burn... Diesel, and it may have been moved by rail by trains that burn... diesel
The food was harvested and planted and transported by combines, tractors, and trucks that burn... umm diesel
Ohh what's that you have an electric car? Sorry the power plants burn coal that is delivered by trains that burn diesel that was mined by trucks burning diesel.
So if there is no diesel there is no food and no stable electric grid.
So while it is nice to talk about public transportation.... the light rail does not deliver food to the grocery store, or deliver coal to the power plant.
If you are worried about gasoline prices don't buy an electric car... consider planing a garden, because while biking to work would be annoying being able to eat is a higher priority.
Umm 1 - 2 ? You don't move the poo very far you build a small power plant where the cows are... it is called a methane digester. An engine burns the methane and produces electricity and heat which is used to keep the input material at the right temp to keep the microbes that produce the methane happy.
Excess heat can be used to heep the ranchers house warm.
After being processed the spent "fuel" is used as fertelizer.
More power can be produced if you put the cows on treadmills.
http://www.inhabitat.com/2010/04/19/cows-on-treadmills-could-produce-six-percent-of-the-worlds-power/
All this reminds me of mad max... who rules bater town? Master blaster!
You have a source of wast heat if it is a high enough temperature... you can either use it to heat your home directly or can use it to run a heat pump and still have wast heat (at a lower temp) that can be used to heat your home too.
You can use the same waste heat to run the heat pump in the summer for air conditioning.
It is not just a question of money I can't get cable or sat at any price.
I live in an area "serviced" by comcast but I can't get cable. When they came out to set up the cable and internet they said the signal at the house and at the pole was too low. They left never to be seen again.
We gave up and got DSL. My next door neighbor has comcast but he says it works so poorly he has written letters to regional managers etc to no avail.
The fact is cable tv is not considered a public utility so they have no requirement to sell their service to you or meet minimum quality standards.
In the case of me and my neighbor comcast knows that it is not worth them spending the money to maintain / repair their stuff. Who cares if they loose 2 customers... it is not like we have any other choice anyway. No fios, and too many trees and on the wrong side of the hill for sat.
The major expense of operating an electric vehicle is not the cost of the electricity.
Yes, the cost of electricity is less than the cost of gasoline but that is only part of the story.
Say an hypothetical electric car uses 250 watt hrs per mile. Say that electricity is 16 cents per kWh.
4 cents per mile of electricity cost.
From the article let us assume this car requires $2000 worth of batteries every year.
Also assume that it can drive 15,000 miles each year.
That is 13 cents per mile battery cost.
At $4 per gallon and 20 mpg you are at 20 cents per mile vs 17 for the electric.
So while saving $450 per year + the cost of oil changes etc would be nice it hardly seems worth the inconvenience of being stuck with a vehicle that has a limited range and a long recharge time.
The fact that many new houses regardless of size are poorly built using crappy materials like OSB is a problem all its own.
I think people misunderstand why some people have a long commute. Sure you can say that they lived far away so they could get a bigger house for the same money as they would have spent closer to town.
This ignores the people who do not make a lot of money who live far away because that is the only way that they could afford to own a home. It is not a difference of small vs palace in the woods it is a difference of unfordable vs affordable.
Say their car gets 20 mpg, gas is $4
lets compare living 15 mi from work vs living 60 mi from work.
living close costs them $120 in gas every 4 weeks
Living far costs $480 in gas
Difference $360
When gas was $2 this was $180
So which is cheaper? It depends on housing prices
Can they get the same house 15 mi from work for $360 more per month? Can they get a loan for that much more?
$180 per month at %6 30 yr fixed
translates to a $30k difference in purchase price,
$360 to a 60k difference.
Over 30 yrs you'll pay close to $70k in interest on 60k principal.
$70k will buy more than a few tanks of gas.
Gas goes up gas goes down interest rates rates change, property values change. You take a risk no matter what you do, you can go from sitting pretty to foo bar pretty quickly.
I have DSL service, there is no other option at the moment. Verizon owns the phone lines, I can get phone/dsl service from another company and I do but they must lease the lines from Verizon.
Getting service from another provider is slightly cheaper than getting it from Verizon directly.
When there is a problem though nothing gets fixed quickly, they blame verizon, verizon blames them, each can only test their part of the chain.
I could get service directly from verizon but I have seen how poor their customer service is in dealing with another ISP who is a much larger customer than I am. Why would I expect their customer service to be any better when dealing with them directly? It is not like I have a choice, cable, satellite, cellular are not available or are not practical in my area.
It is a royal pain I had to complain to the public services commission just to get a land line.
A company acting in its own self interest to the detriment of the consumer... (fakes shock)... say it ain't so.
Democrats don't seem to loose gracefully
Al Gore
John Kerry
Lieberman
Hillary
You can call it a never give up attitude or ignoring the facts.
I'm sick of hearing them complain and want to change the rules of the game midway.
dangling chad
"will of the people"
"just wants to be considered"
It is possible to win the popular vote and loose the election.
primary elections before X date will not be considered
Super delegates
Oi my head hurts
Ok so if a counterfeit router is just a back door sale with a fake serial number who cares.
If a counterfeit made elsewhere I would be concerned, not about back doors, but just the quality and reliability of the equipment.
If you are producing a counterfeit product you don't care about quality or how long the thing lasts so long as it is long enough for you to sell it. Warranty returns and tech support problems are going to fall on the company you are faking not yours.
Well conservation of energy for one. The energy required to split water in to hydrogen and oxygen is greater than the energy you get from burning it otherwise we'd all have perpetual motion machines running in our back yard.
Flow rate. Say an engine has a displacement of 3 liters and is operating at 2000 rpm. 3 liters * 2000 rpm/2 (as this is a 4 stroke engine) *.85 (assume this is not turbo charged so the cylinder is never completely full) = 2550 liters of air per min.
the electric power required to electrolyze the hydrogen equivalent to 1 gallon of gasoline is equal to (500 moles) x (0.06587 kWh/mole) = 32.935 kWh, and the approximate cost of that power = (32.935 kWh) credit to this site http://www.stardrivedevice.com/electrolysis.html
How much current can you alternator put out? Maybe 100 amps. How much hydrogen could your car generate per min? How much power can your alternator produce 100A *13.7V 1.37 KW
How much hydrogen could your car produce per min? 1.37 * (.06587 kWh/mole) / 60min/hr * 22.4 liters/mol = 0.033 liters of hydrogen per min Compare this to the number above for the volume of air entering the engine.
How much hydrogen would one need to run a vehicle?
If 500 mol of hydrogen = 1 gallon of gasoline If the vehicle gets 30 mpg at 60 mph = 2 gallons of gasoline per hr or 1000 mol of hydrogen per hr * 22.4 liters / mol / 60 min / hr = 373 lites per min of hydrogen
Compare this to the number above. If anything all those hydrogen generator scams are going to do is create a vacuum leak that will turn on your check engine light.
The bad things with FIOS. They cut your copper line so your phone is now over fios as well. Now you are stuck with verizon for phone service, also note that in the even of a power outage your phone will only las as long as the back-up battery.
I moved into a house and ordered comcast, they showed up and said that the signal strength both inside the house an at the pole was too low. They left never to be seen again. I signed up for sat tv they showed up and declared that my neighbor had too many trees that would block the signal.
I signed up for DSL and phone. Weeks later I had received the DSL modem in the mail but still no phone or DSL. Verizon owns the phone lines in the area and even though I had ordered DSL and phone at a slightly cheaper rate through another provider... verizon still had to be the one to hook things up. They claimed that there was not enough capacity in the area and refused to give us a phone line. We had to call the public utilities commission to get phone service.
Digital cell phones.. do not work well in this house, one day I had no network coverage at all.
The land line has a horrible echo whenever we call someone, so bad that when I called on a old analog bag phone they commented on how good and clear the phone sounded.
This is near Baltimore md population what 700,000 my grandfather lives in a town with less that 600 people. He said I need to move to civilization where he lives, he can get phone, internet, cable.
Rather than complaining that joint smoking laws are too tough why don't you consider alternative forms of recreation that have a more favorable risk benefit analysis say crack for example. You might end up as mayor of D.C.
Re:RAM vs. battery life?
on
Hacking Asus EEE
·
· Score: 2, Interesting
RAM is a bunch of memory chips stuck on a circuit board. Those chips are rated at how fast the memory can be accessed in nanoseconds. A stick of ram operating at X frequency and X CAS latency will correspond to a given access time in nanoseconds. CAS latency is the number of clock cycles that the computer must wait between accessing the RAM. A company can use lower cost memory chips and sell ram rated at a higher frequency but at the expense of a higher cas latency. If you want the fastest ram possible get the highest frequency and lowest CAS latency. There is nothing to stop you (other than the BIOS settings) from running fast ram at slower settings and lower voltage to save power.
The faster you run a stick of ram the more power it is going to burn. I don't know of a way to figure out exactly how much power a stick of ram is going to use short of testing it or looking up the part number of the memory chips used.
Higher frequency at the same CAS latency = faster Same frequency lower CAS latency = faster
When you get to slower frequency at lower CAS latency it is not as clear cut, because now the clocks you are using to measure the latency are not the same so even if the latency was the same the CAS latency would not be.
75 MPH speed limit on I-90 in South Dakota or one along with a 45 MPH speed MINIMUM.
A few things to keep in mind;
1) It takes more power to go up hill than it does to drive on level ground.
2) A vehicle that can OBTAIN a speed which may be in excess of the posted speed limit may not be able to MAINTAIN the posted speed MINIMUM while climbing a hill (both ways in the snow!), or while hauling its rated capacity of passengers, cargo, trailer and so on.
My professor in college picked their vehicle based on its ability to maintain speed while climbing a steep grade near the school.
Toyota rav4 and Honda CRV, were considered but were not able to meet this requirement, a subaru was chosen as it did.
A vehicle can have a high or low HP and still be a very drivable vehicle dependent on the torque that the engine can produce, the combination of what rpm it produces those numbers and the gear ratios available.
Yes, I'd like low end torque, and better mpg.
How many diesel options are there in the states?
Yes, better mpg of diesel would be nice but I really like how my gasoline engine still starts at -32 C without any special fuel.
Yes, #1 diesel exists, but that does not mean that it is available to purchase even in a cold climate. A friend of mine discovered much to his dismay that the "winter" diesel he bought was not #1 diesel but a "blend" that still gelled up.
A smoke detector will not prevent your house from being destroyed by fire, only alert you that is about to be if you do noting about it. It can alert you soon enough to get out with your life, or put out a small fire with a fire extinguisher should you happen to have one and know ho to use it. While a sprinkler system might help save your house and your life with little effort on your part.
Same thing here, we have no "the world is about to be destroyed detector" which would only be useful if we could do something about it, or someplace else to go if it detected anything.
If you had 1 billion dollars why would you want to live in the people's republic of maryland?
A capacitor may store less energy per lb than a battery, but it has the ability to charge and discharge that full capacity very quickly. This is especially important in regenerative braking applications.
When a vehicle is moving it has kinetic energy because of its mass and velocity than can be converted to 1) heat with disk brakes 2) electricity with a generator connected to the wheels.
Seeing as how #2 is much more useful let us do that.
In vehicle "A" we have a Li battery pack to charge in vehicle "B" a fancy ceramic capacitor.
We have to slow down fast enough to avoid hitting the car in front of us so we only have a short window in which we can charge our storage device. Li ion batteries a especially picky about how they are charged (lest they pull a sony on us) so no matter how much energy is available to us we are limited by the charge rate of the battery. Note the difference between the charge/discharge rate and capacity. The battery works best at slow charge and discharge rates.
Now in vehicle "B" the capacitor can handle the inrush of current when we flip on the generator and start slowing down here we are limited by the capacity of the device not the charge rate.
So if you are going down a slight slope for 10 mi and want to control your speed a bit the higher capacity of the battery could allow you to store more energy.
If you are doing stop and go driving in town you'll be able to capture and use more of the energy, you do not have to store the energy very long just until you need to accelerate again. Here the higher capacity of the battery does not help it much because it is only able to capture a small % of the energy available in any stopping event which is then quickly used to accelerate again so the larger capacity of the battery does not help it.
2nd topic.
Charge cycles and life
batteries have a rated life of a thousand or so charge discharge cycles if someone tells you they have one that will last for 3000 people get really excited... never mind that they tend to die of old age before they see that many cycles anyway.
A capacitor has a rated life of 500,000 to 1,000,000 cycles. How many times will you hit the brakes, today? this year? over the life of the car?
You have to choose your battery / capacitor or combo of the two based on your requirements and funding limits.
I belive it. The speed of smell can be faster than the speed of light...
with respect to Schroedinger when you open the box if you smell the cat before you see it, the cat is dead.
Slashdot Mirror
We'll be the last manufacturer of ...
buggy whips
35mm film
VHS tapes
incandescent light bulbs
Being the last one standing in this case might be more like being the last of your species...
Being the last to die is not so much a "win"
A $60 light bulb ... um no thanks
A well cared for LED "can" last a long time. I'll be willing to bet that the rest of the power electronics will not last as long. Especially based on the short life I have seen out of CFL's and yes even the "good" ones by GE Osram/Sylvania when you use electrolytic capacitors in the ballast you can only expect so much.
Buy the GE bulbs on sale for $1 and know they will not last anywhere near the 8 years the package claims but at that price ... who cares? The difference in energy usage between the LED and a CFL is 1/2 a watt so it would take 80 years to overcome the $59 price difference. When the CFL dies in 2 years look at the price & performance of LED bulbs again.... chances are the performance is only going to go up and the price come down. Are you really going to keep running that LED bulb you bought today if N years from now you can get one twice as bright for the power consumed? So there really isn't much advantage to being an early adopter. Even if you are using incandescent bulbs the cost of lighting your home probably pales in comparison to your heating and air conditioning costs. $60 spent on attic insulation will likely give you bigger returns than one light bulb. Ten bulbs would be $600 ... money that would be better spent on a desuperheater for your ac/heat pump make your ac more efficient and get hot water as an added bonus.
LED bulbs are not "bad" it is just that there are other things that give you so much more return on your investment at present prices.
So anyway good job Phillips I won't be buying your bulb at current prices but there are plenty of people who stink at math that will.
Gasoline being expensive is no fun, but there are parts of the world where gasoline is expensive now ... and life goes on.
Now if we see a shortage of gasoline where you can't get it at any price that is even more painful ...
But worse yet than that would be a shortage of diesel ... at that point you don't have to worry about going to work you'll be too busy trying not to starve/freeze to death.
See your food is transported to the store by trucks that burn ... Diesel, and it may have been moved by rail by trains that burn ... diesel
The food was harvested and planted and transported by combines, tractors, and trucks that burn ... umm diesel
Ohh what's that you have an electric car? Sorry the power plants burn coal that is delivered by trains that burn diesel that was mined by trucks burning diesel.
So if there is no diesel there is no food and no stable electric grid.
So while it is nice to talk about public transportation .... the light rail does not deliver food to the grocery store, or deliver coal to the power plant.
If you are worried about gasoline prices don't buy an electric car... consider planing a garden, because while biking to work would be annoying being able to eat is a higher priority.
Umm 1 - 2 ? You don't move the poo very far you build a small power plant where the cows are ... it is called a methane digester. An engine burns the methane and produces electricity and heat which is used to keep the input material at the right temp to keep the microbes that produce the methane happy.
Excess heat can be used to heep the ranchers house warm.
After being processed the spent "fuel" is used as fertelizer.
More power can be produced if you put the cows on treadmills.
http://www.inhabitat.com/2010/04/19/cows-on-treadmills-could-produce-six-percent-of-the-worlds-power/
All this reminds me of mad max ... who rules bater town? Master blaster!
100% +
You have a source of wast heat if it is a high enough temperature... you can either use it to heat your home directly or can use it to run a heat pump and still have wast heat (at a lower temp) that can be used to heat your home too.
You can use the same waste heat to run the heat pump in the summer for air conditioning.
It is not just a question of money I can't get cable or sat at any price. I live in an area "serviced" by comcast but I can't get cable. When they came out to set up the cable and internet they said the signal at the house and at the pole was too low. They left never to be seen again. We gave up and got DSL. My next door neighbor has comcast but he says it works so poorly he has written letters to regional managers etc to no avail. The fact is cable tv is not considered a public utility so they have no requirement to sell their service to you or meet minimum quality standards. In the case of me and my neighbor comcast knows that it is not worth them spending the money to maintain / repair their stuff. Who cares if they loose 2 customers ... it is not like we have any other choice anyway. No fios, and too many trees and on the wrong side of the hill for sat.
The major expense of operating an electric vehicle is not the cost of the electricity. Yes, the cost of electricity is less than the cost of gasoline but that is only part of the story. Say an hypothetical electric car uses 250 watt hrs per mile. Say that electricity is 16 cents per kWh. 4 cents per mile of electricity cost. From the article let us assume this car requires $2000 worth of batteries every year. Also assume that it can drive 15,000 miles each year. That is 13 cents per mile battery cost. At $4 per gallon and 20 mpg you are at 20 cents per mile vs 17 for the electric. So while saving $450 per year + the cost of oil changes etc would be nice it hardly seems worth the inconvenience of being stuck with a vehicle that has a limited range and a long recharge time.
The fact that many new houses regardless of size are poorly built using crappy materials like OSB is a problem all its own. I think people misunderstand why some people have a long commute. Sure you can say that they lived far away so they could get a bigger house for the same money as they would have spent closer to town. This ignores the people who do not make a lot of money who live far away because that is the only way that they could afford to own a home. It is not a difference of small vs palace in the woods it is a difference of unfordable vs affordable. Say their car gets 20 mpg, gas is $4 lets compare living 15 mi from work vs living 60 mi from work. living close costs them $120 in gas every 4 weeks Living far costs $480 in gas Difference $360 When gas was $2 this was $180 So which is cheaper? It depends on housing prices Can they get the same house 15 mi from work for $360 more per month? Can they get a loan for that much more? $180 per month at %6 30 yr fixed translates to a $30k difference in purchase price, $360 to a 60k difference. Over 30 yrs you'll pay close to $70k in interest on 60k principal. $70k will buy more than a few tanks of gas. Gas goes up gas goes down interest rates rates change, property values change. You take a risk no matter what you do, you can go from sitting pretty to foo bar pretty quickly.
I have DSL service, there is no other option at the moment. Verizon owns the phone lines, I can get phone/dsl service from another company and I do but they must lease the lines from Verizon. Getting service from another provider is slightly cheaper than getting it from Verizon directly. When there is a problem though nothing gets fixed quickly, they blame verizon, verizon blames them, each can only test their part of the chain. I could get service directly from verizon but I have seen how poor their customer service is in dealing with another ISP who is a much larger customer than I am. Why would I expect their customer service to be any better when dealing with them directly? It is not like I have a choice, cable, satellite, cellular are not available or are not practical in my area. It is a royal pain I had to complain to the public services commission just to get a land line. A company acting in its own self interest to the detriment of the consumer ... (fakes shock) ... say it ain't so.
Democrats don't seem to loose gracefully Al Gore John Kerry Lieberman Hillary You can call it a never give up attitude or ignoring the facts. I'm sick of hearing them complain and want to change the rules of the game midway. dangling chad "will of the people" "just wants to be considered" It is possible to win the popular vote and loose the election. primary elections before X date will not be considered Super delegates Oi my head hurts
Ok so if a counterfeit router is just a back door sale with a fake serial number who cares. If a counterfeit made elsewhere I would be concerned, not about back doors, but just the quality and reliability of the equipment. If you are producing a counterfeit product you don't care about quality or how long the thing lasts so long as it is long enough for you to sell it. Warranty returns and tech support problems are going to fall on the company you are faking not yours.
What is the need for a remote if you can use telekinesis? Does superman fly southwest?
Well conservation of energy for one. The energy required to split water in to hydrogen and oxygen is greater than the energy you get from burning it otherwise we'd all have perpetual motion machines running in our back yard.
/2 (as this is a 4 stroke engine) * .85 (assume this is not turbo charged so the cylinder is never completely full) = 2550 liters of air per min.
Flow rate.
Say an engine has a displacement of 3 liters and is operating at 2000 rpm.
3 liters * 2000 rpm
the electric power required to electrolyze the hydrogen equivalent to 1 gallon of gasoline is equal to (500 moles) x (0.06587 kWh/mole) = 32.935 kWh, and the approximate cost of that power = (32.935 kWh)
credit to this site http://www.stardrivedevice.com/electrolysis.html
How much current can you alternator put out? Maybe 100 amps. How much hydrogen could your car generate per min? How much power can your alternator produce 100A *13.7V 1.37 KW
How much hydrogen could your car produce per min?
1.37 * (.06587 kWh/mole) / 60min/hr * 22.4 liters/mol = 0.033 liters of hydrogen per min
Compare this to the number above for the volume of air entering the engine.
How much hydrogen would one need to run a vehicle?
If 500 mol of hydrogen = 1 gallon of gasoline
If the vehicle gets 30 mpg at 60 mph = 2 gallons of gasoline per hr or 1000 mol of hydrogen per hr * 22.4 liters / mol / 60 min / hr = 373 lites per min of hydrogen
Compare this to the number above.
If anything all those hydrogen generator scams are going to do is create a vacuum leak that will turn on your check engine light.
The bad things with FIOS. They cut your copper line so your phone is now over fios as well. Now you are stuck with verizon for phone service, also note that in the even of a power outage your phone will only las as long as the back-up battery.
... verizon still had to be the one to hook things up. They claimed that there was not enough capacity in the area and refused to give us a phone line.
.. do not work well in this house, one day I had no network coverage at all.
I moved into a house and ordered comcast, they showed up and said that the signal strength both inside the house an at the pole was too low. They left never to be seen again.
I signed up for sat tv they showed up and declared that my neighbor had too many trees that would block the signal.
I signed up for DSL and phone. Weeks later I had received the DSL modem in the mail but still no phone or DSL. Verizon owns the phone lines in the area and even though I had ordered DSL and phone at a slightly cheaper rate through another provider
We had to call the public utilities commission to get phone service.
Digital cell phones
The land line has a horrible echo whenever we call someone, so bad that when I called on a old analog bag phone they commented on how good and clear the phone sounded.
This is near Baltimore md population what 700,000 my grandfather lives in a town with less that 600 people. He said I need to move to civilization where he lives, he can get phone, internet, cable.
Rather than complaining that joint smoking laws are too tough why don't you consider alternative forms of recreation that have a more favorable risk benefit analysis say crack for example.
You might end up as mayor of D.C.
RAM is a bunch of memory chips stuck on a circuit board. Those chips are rated at how fast the memory can be accessed in nanoseconds. A stick of ram operating at X frequency and X CAS latency will correspond to a given access time in nanoseconds. CAS latency is the number of clock cycles that the computer must wait between accessing the RAM. A company can use lower cost memory chips and sell ram rated at a higher frequency but at the expense of a higher cas latency. If you want the fastest ram possible get the highest frequency and lowest CAS latency. There is nothing to stop you (other than the BIOS settings) from running fast ram at slower settings and lower voltage to save power.
The faster you run a stick of ram the more power it is going to burn. I don't know of a way to figure out exactly how much power a stick of ram is going to use short of testing it or looking up the part number of the memory chips used.
Higher frequency at the same CAS latency = faster
Same frequency lower CAS latency = faster
When you get to slower frequency at lower CAS latency it is not as clear cut, because now the clocks you are using to measure the latency are not the same so even if the latency was the same the CAS latency would not be.
Wikipedia has largely replaced the encyclopedia Britannica as the source for all knowledge for two reasons
... ...twice
1) It is slightly cheaper.
2) The "facts" can be edited to reflect your own personal preferences.
Fact 1) Ninjas are mammals
2) Chuck Norris counted to infinity
75 MPH speed limit on I-90 in South Dakota or one along with a 45 MPH speed MINIMUM. A few things to keep in mind; 1) It takes more power to go up hill than it does to drive on level ground. 2) A vehicle that can OBTAIN a speed which may be in excess of the posted speed limit may not be able to MAINTAIN the posted speed MINIMUM while climbing a hill (both ways in the snow!), or while hauling its rated capacity of passengers, cargo, trailer and so on. My professor in college picked their vehicle based on its ability to maintain speed while climbing a steep grade near the school. Toyota rav4 and Honda CRV, were considered but were not able to meet this requirement, a subaru was chosen as it did. A vehicle can have a high or low HP and still be a very drivable vehicle dependent on the torque that the engine can produce, the combination of what rpm it produces those numbers and the gear ratios available.
Yes, I'd like low end torque, and better mpg. How many diesel options are there in the states? Yes, better mpg of diesel would be nice but I really like how my gasoline engine still starts at -32 C without any special fuel. Yes, #1 diesel exists, but that does not mean that it is available to purchase even in a cold climate. A friend of mine discovered much to his dismay that the "winter" diesel he bought was not #1 diesel but a "blend" that still gelled up.
A smoke detector will not prevent your house from being destroyed by fire, only alert you that is about to be if you do noting about it. It can alert you soon enough to get out with your life, or put out a small fire with a fire extinguisher should you happen to have one and know ho to use it. While a sprinkler system might help save your house and your life with little effort on your part.
Same thing here, we have no "the world is about to be destroyed detector" which would only be useful if we could do something about it, or someplace else to go if it detected anything.
If you had 1 billion dollars why would you want to live in the people's republic of maryland?
You want support so that when the next big security flaw is found they fix it for you, because windows is not open source you can not fix it yourself.
A capacitor may store less energy per lb than a battery, but it has the ability to charge and discharge that full capacity very quickly. This is especially important in regenerative braking applications. When a vehicle is moving it has kinetic energy because of its mass and velocity than can be converted to 1) heat with disk brakes 2) electricity with a generator connected to the wheels. Seeing as how #2 is much more useful let us do that. In vehicle "A" we have a Li battery pack to charge in vehicle "B" a fancy ceramic capacitor. We have to slow down fast enough to avoid hitting the car in front of us so we only have a short window in which we can charge our storage device. Li ion batteries a especially picky about how they are charged (lest they pull a sony on us) so no matter how much energy is available to us we are limited by the charge rate of the battery. Note the difference between the charge /discharge rate and capacity. The battery works best at slow charge and discharge rates.
Now in vehicle "B" the capacitor can handle the inrush of current when we flip on the generator and start slowing down here we are limited by the capacity of the device not the charge rate.
So if you are going down a slight slope for 10 mi and want to control your speed a bit the higher capacity of the battery could allow you to store more energy.
If you are doing stop and go driving in town you'll be able to capture and use more of the energy, you do not have to store the energy very long just until you need to accelerate again. Here the higher capacity of the battery does not help it much because it is only able to capture a small % of the energy available in any stopping event which is then quickly used to accelerate again so the larger capacity of the battery does not help it.
2nd topic.
Charge cycles and life
batteries have a rated life of a thousand or so charge discharge cycles if someone tells you they have one that will last for 3000 people get really excited... never mind that they tend to die of old age before they see that many cycles anyway.
A capacitor has a rated life of 500,000 to 1,000,000 cycles. How many times will you hit the brakes, today? this year? over the life of the car?
You have to choose your battery / capacitor or combo of the two based on your requirements and funding limits.
I belive it. The speed of smell can be faster than the speed of light... with respect to Schroedinger when you open the box if you smell the cat before you see it, the cat is dead.