I don't think I missed his point; he compared a computer's heat output to an "electric or gas heater". The computer would be just as efficient as an electric space-heater. (a heat pump would be much better of course, if it's not terribly cold outside)
I know natural gas is more cost-effective and energy efficient than space-heaters.
The heat put out by your computer is definatly not as efficient as your electric or gas heater
Actually, a computer is 100% efficient as a heater.
So is a lightbulb as long as you don't let the light out the windows.
A gas heater would probably be cheaper to run, because natural gas is usually cheap, but it would actually be less efficient because a lot of the heat goes out the chimney/exhaust.
Somebody told me that as a rule of thumb that 5x the amount of power used to generate the heat is needed to remove it via air conditioning -- so 200 watts of computer = 1000 watts of A/C needed to keep it cool. Can anybody confirm or deny this rule of thumb? -- it sounds like too much to me.)
Deny.
500Watts of A/C gives about 5200BTU of cooling, which is what is recommended to cool 1000W of computers. And that's probably using less than 100% duty cycle.
(A/C's are heat pumps, so they do not need as much power as the heat they remove)
I agree. Programs like Mapsource are mostly vector-based, so zooming in doesn't lose any detail.
The only concern would be if you can get the fonts big enough to read.
Also, PDF maps would usually be vector-based.
I also was going to recommend a projector. Preferably 1024x768 or better, with a decent screen.
I don't know where this kid is going to school, but the school should be trying to accomodate him.
I'm suprised an overhead projector wouldn't work with a printed atlas. You might need a dark room and a bigger-than-average screen if the fonts are still to small, but it should be feasible.
"The Museum Company", a mall chain store in the US, was selling "3-D Laser scanned" reproductions of Monet, Van Gogh and other paintings which are out of copyright.
They looked real-enough to me (they had brush strokes, etc.).
The store by me has closed, and I don't see any paintings on their web site, so I'm not sure if they are still doing it.
They were selling for $350-600 for 2-3 foot paintings.
We are talking about a home network here. Server isolation is not really an option.
Depends how much time you want to put into it.
I'm running an old PC with Astaro's firewall sw, and it has 3 nics for EXT, INT, & DMZ, plus a Wireless nic in a PCMCIA-PCI bridge.
On the DMZ is my webserver.
Also, the wireless network is isolated.
Astaro is free for personal use, and there are other free firewalls, or you can build your own with PF or IPTables.
If you're worried about power, you can use a VIA C3 or Eden, but with multiple nics, they are expensive ($350+).
The original Pentium is often referred to as a P5.
PPro/PII/PIII is P6, Pentium4 is P7...
I don't know what they'll call the Pentium 5 if/when it comes out:P
I'd be using it to run Astaro firewall, which is kind of a pig for CPU and RAM.
If you only need 1 NIC, LOTS of Mini-ITX VIA systems are available for under $200 with case, mb, CPU. Their power consumption is supposed to be around 13watts + HD.
If he means a mailserver for home use, even with a lot of spam for a few users, CPU usage should be OK.
I'd be a lot more worried about RAM though if the boxes max out at 64mb... the perl version of SpamAssassin uses about 20MB, and if you do AV also, that's another 5-10MB RAM per concurrent connection.
I've had problems with my home server (P5/140MB RAM) freaking when I use fetchmail to d/l my POP3 acct with 10-20 emails; fetchmail hands the messages to sendmail and sendmail tries to process them all at once, launching 20 Amavis+McAfee threads, and the server runs out of RAM and the evil OOM killer kicks in and kills something important like apache or bind!:( I haven't tried it lately (new 2.4.x kernel without OOM killer).
Tuning sendmail to do less threads at once would help of course.
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I don't think I missed his point;
he compared a computer's heat output to an "electric or gas heater". The computer would be just as efficient as an electric space-heater.
(a heat pump would be much better of course, if it's not terribly cold outside)
I know natural gas is more cost-effective and energy efficient than space-heaters.
If the ambient temperature in my office were that high I'd be looking furiously for a lower-power chip, too.
If my office were that hot I'd be looking for a computer that runs off of a Carnot Engine!
IIRC, most NForce3 based boards are able to get around the multiplier lock.
Actually, a computer is 100% efficient as a heater.
So is a lightbulb as long as you don't let the light out the windows.
A gas heater would probably be cheaper to run, because natural gas is usually cheap, but it would actually be less efficient because a lot of the heat goes out the chimney/exhaust.
Deny.
500Watts of A/C gives about 5200BTU of cooling, which is what is recommended to cool 1000W of computers. And that's probably using less than 100% duty cycle.
(A/C's are heat pumps, so they do not need as much power as the heat they remove)
TFA doesn't say; do these things need power to hold their state like relays or dram, or do they work like flash memory?
Win2k and XP will install Chinese fonts for you if you ask it to.
Dunno about WinCE, and for 9x, you'll have to find some yourself. MS used to have Chinese fonts for 9x, filenames were ie3lpkcn.exe and ie3lpktw.exe
Also, I'm sure you can find some free ones with many linux distros. Try RedHat (or RedFlag or some other Asian Linux).
I agree. Programs like Mapsource are mostly vector-based, so zooming in doesn't lose any detail.
The only concern would be if you can get the fonts big enough to read.
Also, PDF maps would usually be vector-based.
I also was going to recommend a projector. Preferably 1024x768 or better, with a decent screen.
I don't know where this kid is going to school, but the school should be trying to accomodate him.
I'm suprised an overhead projector wouldn't work with a printed atlas.
You might need a dark room and a bigger-than-average screen if the fonts are still to small, but it should be feasible.
Then perhaps you should work as a security guard. :p
"The Museum Company", a mall chain store in the US, was selling "3-D Laser scanned" reproductions of Monet, Van Gogh and other paintings which are out of copyright.
They looked real-enough to me (they had brush strokes, etc.).
The store by me has closed, and I don't see any paintings on their web site, so I'm not sure if they are still doing it.
They were selling for $350-600 for 2-3 foot paintings.
There is no Duke.
I think he's using a minimum, not a reserve.
(And I don't think there's a 'minimum fee'.)
The software has been recalled due to some killer bugs.
There will be a patched version by 2010.
btw, you're probably infected w/ spyware. Probably a good idea to try AdAware.
It just happened. I did notice it before I submitted, but didn't want to go there.
If you have a HD, why would you want a CF?
/boot on CF, and everything else on HD?
Or, why not just put
Depends how much time you want to put into it.
I'm running an old PC with Astaro's firewall sw, and it has 3 nics for EXT, INT, & DMZ, plus a Wireless nic in a PCMCIA-PCI bridge.
On the DMZ is my webserver.
Also, the wireless network is isolated.
Astaro is free for personal use, and there are other free firewalls, or you can build your own with PF or IPTables.
If you're worried about power, you can use a VIA C3 or Eden, but with multiple nics, they are expensive ($350+).
Modern 3.5" drives are supposed to idle at 3-5watts, and spinup is 10-20w.
2.5" drives use even less.
The original Pentium is often referred to as a P5. :P
PPro/PII/PIII is P6, Pentium4 is P7...
I don't know what they'll call the Pentium 5 if/when it comes out
This seems expensive (300-400 euros).
How is the performance of the Geode CPU?
I've seen some VIA C3 boards with 3-4 Nics here.
They have a US Distributor here.
I talked to them in June; with case, motherboard w 4 RealTek nics and the fastest CPU it was $370.
Here is another one with 4 nics.
I'd be using it to run Astaro firewall, which is kind of a pig for CPU and RAM.
If you only need 1 NIC, LOTS of Mini-ITX VIA systems are available for under $200 with case, mb, CPU.
Their power consumption is supposed to be around 13watts + HD.
I don't know, You'd need to ask the G.P (Mr. Anonymous Coward. :P )
I think it's a joke, but I'm sure you could get some power. It'd be a HUGE waste of water though.
Googled, found this.
Seems like only about 75watts assuming 30psi.
I've seen 90psi around here though.
Doesn't sound worth the trouble... 75watts is about $0.20/day in California.
And everytime someone flushes the toilet, you'll have a brownout!
If you use KDE, there is a KLaptop program which does power-management and can shutdown if battery is low.
I think there's one for Gnome also, but I don't remember the name.
You could also have a perl script watch
/proc/apm/battery/charge
or wherever it is, and shutdown below a certain level.
Linux 2.6.6 and above kernels have a "Laptop Mode" which will only spin up the disk when necessary (read needed, or write buffers full).
/proc/sys/vm/laptop_mode
It's a sysctl variable...
echo "1" >
There's apparently also a userspace version if you don't want to upgrade your kernel.
Google has info on using both.
Then you should be able to have free watercooling too!
If he means a mailserver for home use, even with a lot of spam for a few users, CPU usage should be OK.
:(
I'd be a lot more worried about RAM though if the boxes max out at 64mb... the perl version of SpamAssassin uses about 20MB, and if you do AV also, that's another 5-10MB RAM per concurrent connection.
I've had problems with my home server (P5/140MB RAM) freaking when I use fetchmail to d/l my POP3 acct with 10-20 emails; fetchmail hands the messages to sendmail and sendmail tries to process them all at once, launching 20 Amavis+McAfee threads, and the server runs out of RAM and the evil OOM killer kicks in and kills something important like apache or bind!
I haven't tried it lately (new 2.4.x kernel without OOM killer).
Tuning sendmail to do less threads at once would help of course.