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Green buildings, Green Server Farms?

mstansberry writes "Has IT evolved to the point where it can consider energy efficiency without sacrificing uptime or performance? According to an interview with APC's Richard Sawyer, the answer is yes. The green buildings movement, spearheaded by the USGBC and other organizations has some people thinking about computing infrastructure's impact on the environment. Is it an IT issue or something from C-level executives?"

53 of 263 comments (clear)

  1. But by Anonymous Coward · · Score: 4, Insightful

    Last time I checked my computer was a box full of toxic chemicals

    1. Re:But by Politburo · · Score: 3, Insightful

      Right, so because computers contain some toxic substances that are not emitted to the air or ground during normal use, that means we shouldn't attempt to mitigate the environmental impact computer use?

      +5, Insightful, but only if you're a simple-minded idiot.

    2. Re:But by magarity · · Score: 2

      that means we shouldn't attempt to mitigate the environmental impact computer use?

      The original point is more that the original production wastes of making a computer are so nasty that any contributions towards making the running of the thing more environmentally friendly has no practical effect on the balance. The manufacturing and refining processes are so nasty that a PC would have to OUTPUT free, clean energy for hundreds of years to come out even.

  2. Considering mac mini's take less power than cpus by guildsolutions · · Score: 5, Interesting

    Considering my mac mini takes less power than just my AMD cpu, let alone not talking about the video card, etc... Im really wondering if the push for massive cpu power at the cost of extreme electrical usage is really worth it.

    Green everything should be a good thing, but what if the cost of green than reclamation and regeneration?

  3. Power is a big issue by btempleton · · Score: 5, Insightful

    Even without environmental questions. CPUs have been getting faster and faster per dollar you spend on them, but they haven not been getting faster the same way per _watt_ you put into them. And each watt put into them also costs power to cool them.

    This applies even in the home. Here in California, land of the 14 cent kwh, a 100 watt PC running 24/7 costs $120 per year in power. In a 3 year life the power is more expensive than the CPU or any other major component except perhaps the monitor, sometimes more expensive than the whole PC.

    This also plays big on ideas like getting an old computer and putting linux on it to act as a router or music player or other special functions. You are much better off buying a dedicated box like a WRT54G than making use of the "free" old hardware.

    And yes, this does have environmental issues, but you can see the problem right away just by looking at costs.

    --
    Has it been over a year since you last donated to the Electronic Frontier Foundation
    1. Re:Power is a big issue by Shalda · · Score: 4, Interesting

      I think you've hit the issue right on the head. Your average data-center manager could not care less about whether his server farm is environmentally friendly or not. On the other hand, electricity is a major expense. A dozen racks of 1U servers pulling 100-200 watts each will probably run you upwards of $80k/year. And that doesn't even include the cost of cooling your server room (which will add another $20k or so). Server consolidations and energy efficient servers save money. And that will always be your driving force. If company A says they have a "green" server room, it's just marketing. Their first concern and only concern is the bottom line.

      On the other hand, I live in Minnesota, and 5 months of the year, we can use that server energy to heat the rest of the building. :)

    2. Re:Power is a big issue by NardofDoom · · Score: 2, Informative
      I wonder if using a heat pump to cool servers would be more efficient than using fans and A/C.

      And using a geothermal heat pump is significantly more efficient than using an atmospheric heat pump. The former pumps heat to and from the 50 degree Farenheit ground while the latter tries to pump heat into the hot air during the summer and get heat out of the air during the winter.

      Server farms using these type of pumps would save significant amounts of money using the same equipment.

      --
      You have two hands and one brain, so always code twice as much as you think!
    3. Re:Power is a big issue by periol · · Score: 2, Interesting

      Their first concern and only concern is the bottom line. While we can argue the short-sightedness of this perspective all we want (and it is tremendously short-sighted to allow companies to pass on environmental costs to society), the truth is that we will win if we start impacting the bottom line of companies. It's possible, and getting more possible every day.

    4. Re:Power is a big issue by enz · · Score: 2, Interesting

      > On the other hand, I live in Minnesota, and 5 > months of the year, we can use that server > energy to heat the rest of the building. :) Electricity is a much more valuable energy than heat from a thermodynamic viewpoint. That means that it is not very efficient to use electricity for heating buildings. Sure, you will get a bit energy back from the waste heat of the computers, but probably this is at least 2-3 times less efficient than generating the heat directly at the required temperature. Also, you get that side effect only in the winter months, in the summer you might have to put additional energy into the air-conditioning.

  4. 8am, Day 1: STOP THE WASTE by toby · · Score: 5, Insightful
    Most server hardware is massively overspecified. 90% of websites could run on a 486 and nobody would notice a difference - assuming, of course, that you are running a sane, frugal (UNIX family) O/S.

    Make enormous energy savings simply by consolidating services...

    Stop buying new servers and extend the lifetime of older ones. (Account for the energy costs of manufacture as well as running costs.)

    --
    you had me at #!
    1. Re:8am, Day 1: STOP THE WASTE by Radix37 · · Score: 3, Funny
      90% of websites could run on a 486 and nobody would notice a difference

      Until Slashdot strikes...

      --
      Speed Demos Archive - Lots of speed runs!
    2. Re:8am, Day 1: STOP THE WASTE by Professor_UNIX · · Score: 2, Interesting
      Most server hardware is massively overspecified. 90% of websites could run on a 486 and nobody would notice a difference - assuming, of course, that you are running a sane, frugal (UNIX family) O/S.

      That's why many sites are virtually hosted on a single, more powerful box. It is usually much cheaper to simply buy a newer, more powerful box than to pay the maintenance costs associated with an older server that your vendor may no longer support.

  5. My server farm... by Bananatree3 · · Score: 3, Insightful

    Would be racks and racks of laptops! No need to by expensive low-power servers, just pump money into high-end laptops that already run low on power. And the best thing is, I don't have to pay for APC's, as they all come with batteries!

    1. Re:My server farm... by SuperBanana · · Score: 3, Informative
      And the best thing is, I don't have to pay for APC's, as they all come with batteries!

      They do, but my experience with laptops (particularly old laptops) has been that their battery capacity gauges don't like being left on A/C power for a couple of months; either the battery gets discharged, or the chip thinks the battery has no capacity left, and instead of going on battery power when the A/C shuts off.

      PS: they're Uninterruptable Power Supplies. Not "APCs". Those are Armored Personnel Carriers.

  6. Interview? by SuperBanana · · Score: 4, Insightful

    "Interview?" More like, "opportunity to mention APC's UPS efficiency and then yack about how important that is."

    Somewhere, APC's PR firm is quite pleased.

  7. Virtualization is the answer by gtrubetskoy · · Score: 5, Interesting

    We wrote about the environmental benefits of virtualization on our site a while back. I even started a little thread on Nanog about any numbers on relationship of server utilization and the energy cost, but it looked like few people cared. To see how underutilized your Linux server is, do:

    # cat /proc/uptime
    1122029.25 1101982.75

    The first number is the system uptime in seconds, the second is the number of seconds it's been idle. The number above is from my laptop - 98% idle.

    Virtualization is also going to be the way hardware vendors will keep the server price up - suddenly very powerful servers will start making sense. The questions is - who will win - Xen, UML or Linux VServer. We're banking on VServer. :-)

    1. Re:Virtualization is the answer by AKAImBatman · · Score: 4, Insightful

      I still have to wonder what the real point of virtualizing is. Yes, Microsoft pulled an amazing coup by convincing sysadmins that they should have a separate box for every tiny little service they wanted to run. But Microsoft got away with it because of the crappy design of Windows as a server OS. (i.e. You have to plan for complete system wipes and upgrades, security is such that one service could compromise another, and system software components are such that they happily interfere with each other.)

      Back in the land of all things sane (i.e. Unix style OSes), I see no reason why NOT to run a billion services on one machine. As long as you've got spare system resources, why shouldn't you make use of them? Why do I NEED the domain controller, file server, mail server, and ftp server to all be different machines? One big Unix box does the job better, and for a lower up front (and longterm!) cost than lots of tiny Windows boxes!

      Granted, there are still some issues that can't be overcome. But which really makes more sense, spending millions of dollars on tons of machines and an army of support staff, or spending a few hundred thousand on a couple of redundant machines and an admin or two to maintain them?

    2. Re:Virtualization is the answer by AKAImBatman · · Score: 2, Interesting

      As someone else pointed out, you really need to investigate On Demand solutions. Sun Microsystems will sell you a system with way more processors and memory than you need for a VERY low cost, but most of the extra hardware will be disabled. When you're expecting high volume (or even if it should suddenly happen upon you) you can call Sun and rent the extra hardware in a pinch.

      This provides you with massive scalability, but without the nasty upfront cost. And if you outstrip the hardware you've been given, Sun can send a guy out to plug in another motherboard (4 processors + memory) while your server is still running!

  8. "C-Level Executive"? by dstone · · Score: 2, Funny

    I thought I was filling out the cover pages on my TPS Reports properly, but I don't know what a "C-Level Executive" is. Do I have to meet with the Bobs to find out?

    1. Re:"C-Level Executive"? by Quikah · · Score: 4, Informative

      CEO, CTO, CFO, etc.

      --
      Q.
  9. Why I want low power/low heat by Kainaw · · Score: 4, Interesting

    I want a low power/low heat computer because I want to be able to leave it on all the time. Every PC I've had has been both a computer and a space heater. It is hot enough. I want a computer without the space heater. It isn't that I care so much about global warming. I care about the warming in my own house and all the wasted electricity I have to pay for (both in the PC and my extra AC use). The problem is that it is hard to find a low heat PC. I would like to take the motherboard I have out of the case and drop in a low-heat one. But, all I can find are extremely overpriced complete systems with the obligatory Windows pre-install.

    --
    The previous comment is purposely vague and generalized, but all of the facts are completely true.
    1. Re:Why I want low power/low heat by sffubs · · Score: 4, Informative

      If you're more worried about heat than speed, something using a VIA Epia board would do the trick.

      --
      ݼ)s$æúßðíÊ'öX'îò5^àûßQç£
    2. Re:Why I want low power/low heat by j-cloth · · Score: 3, Interesting
      As was hinted at above (WRT54G), I cannot recommend enough getting a hackable appliance running an embedded linux.

      Check out the Linksys NSLU2 NAS device. It has a couple USB ports, a Netword adapter, a 266MHz ARM processor, 32MB RAM and an active community porting apps to it.

      A website running on this obviusly couldn't stand up to a slashdotting, but it will work for a personal site and does a good job of streaming media around the house (aside from its primary function as a Samba server)

      The thing draws next to no power and could easliy replace many of the space heaters wasting power in the average geek's basement.

    3. Re:Why I want low power/low heat by javaxman · · Score: 2, Informative
      I want a low power/low heat computer because I want to be able to leave it on all the time.

      How about something like a Mac Mini, some sort of system with adaptive processor usage and an active cooling fan system? Having a good hardware sleep mode helps, too, unless you're actually running a server or something that needs to be up 24/7... my home computer spends most of it's time 'asleep', but is ready to use pretty damn quickly. I don't reboot short of a system upgrade...

      LCD monitors are probably the best thing you can do to reduce heat/power consumption of a PC, as well.

  10. Re:Considering mac mini's take less power than cpu by Anonymous Coward · · Score: 2, Interesting

    The mini reminds me of a friend who used an old 68k macintosh as a webserver. her desktop was plugged into mains power but the little web server only used 17w of power to run all day every day, and was on a solar power setup with battery backup. last time I heard from her it had gone down from lack of power only twice in a year.

    I bet if it wasnt a home built power system but a professional one with some better power management it could be used 24/7 too

  11. Pretty weak article by under_score · · Score: 2, Informative

    It only really just mentions cost and green. I could say to someone "data centers have huge electrical bills and you can save a lot of money by using energy efficient equipment". That's basically what the article says.

    What about specific solutions? Even just general principles? Where would someone look to get help in reducing energy costs? What about alternative energy supplies? Are they reliable enough? Enough power density?

    I would have liked an article with a lot more information.

  12. Re:It's the software vendors' fault by jakel2k · · Score: 5, Insightful

    Umm... this is only with MS products. Most OSS software can be complied and ran on a 486. MS however adds a lot of overhead on top of what a server needs. A standard web server that is current would require at least 500MHz processor with 256Mb RAM and almost 2Gb of HDD space, (if memory recalls correctly.) Installing the newest debian, BSD, Gentoo or Slack without X, (since this is optional on these systems and a requirment for Windows,) could run on a 486, 32Mb RAM, (more is better,) and about 300Mb of HDD space.

    Of course you can install an older version of Windows to save on hardware requirements but you end up sacrificing security updates. Why do that?

  13. toxic chemicals.. by PopeAlien · · Score: 4, Funny

    Last time I checked my computer was a box full of toxic chemicals

    Ah! but what color are these chemicals?

  14. Can you get by with... by Tenebrious1 · · Score: 2, Funny

    That drives initiatives like consolidation. If you have 10,000 servers that are only 20% utilized, can't you get by with 2,000? The answer is probably no. But you might be able to get by with 4,000 and cut your cost in half on the equipment side. And then you start to look at not only the capital investment, but also the expense investment.

    What kind of wacky PHB approves the purchase of 10,000 servers when he only needs 4000? And more importantly, is he hiring?

    --
    -- If god wanted me to have a sig, he'd have given me a sense of humor.
  15. Load balancing by Colin+Smith · · Score: 2, Interesting

    Save money, don't buy more machines, balance the performance more evenly. Condor, Sun Grid Engine etc.

    --
    Deleted
  16. Who still runs 100-watt computers? by Yankel · · Score: 3, Interesting

    Okay, maybe me.

    However, these new |337 modded overclocked mega-boxes with a zillion fans, accelerator cards, lighting, speaker systems, external super-spinning hard drives and 300-watt power supplies use a tad more fuel than that.

    I'd guess that with a CRT monitor, you're looking at an annual cost of at least twice that for a standard-vanilla (non modded) desktop, and the mods go up from there.

    I agree with the post about using laptop parts, and if I'm correct, that's what some manufacturers are starting to do. They're a bit more expensive, but far more energy efficient.

    --
    --- Dan
    1. Re:Who still runs 100-watt computers? by orderb13 · · Score: 2, Informative

      You must be out of touch. A heavily modded computer can easily use 600 watts. My new one came with a 560 watt power supply that can peak at 650.

    2. Re:Who still runs 100-watt computers? by wisdom_brewing · · Score: 2, Interesting

      i remember doing a quick calculation to convince a medium sized firm to switch to lcds several years back, they had about 150-200 computers running, a fair few with multiple displays, the amount that they saved in electricity running the monitors was about $35k a year, air conditioning another 15-20, purely because of that change. the savings werent important for them, but the amount of space created was, especially with multiple monitor setups, deskspace is a scarcity, the financial incentive helped out with the financial department, first a few replacements of older screens, followed by people raving about all the extra space. with cpus and the like this isnt as much of an issue, all youre giving up is a tiny fraction of your legroom and all you need to do is move the computer out of the way, but im sure that small factor pcs and smaller components in general would have a positive impact. some places are very tight on space, and being able to cram more cpus per square foot due to fewer heat issues is bount to be appreciated. a bit off topic but...

    3. Re:Who still runs 100-watt computers? by pla · · Score: 2, Interesting

      You must be out of touch. A heavily modded computer can easily use 600 watts.

      But they don't need to (and in fact, often don't - That 600W power supply might only ever draw 200W, in many situations.

      For example, I recently upgraded my main machine to an Athlon 64 3000 (Winchester core). Measured at-the-plug (which even takes PS losses into consideration), it consumes a whopping 64W idle (how auspicious for an Athlon 64, eh?), or just under 100W with absolutely everything going (burning a DVD, CPU pegged, and playing a modern FPS fullscreen). Combined with a flat panel peaking at 19W, and my average still doesn't equal the draw of a single P4 Prescott core in isolation. And, in six months, I can do a drop-in replacement with a dual-core Athlon 64, with almost no increase in power consumption. On the Intel side, though a lot more pricey and with a bit less horsepower, the Pentium M has a power consumption profile that even puts the 90nm Athlon 64s to shame.

      And that, I believe, sums up the intent of the parent article nicely... I have a machine that, for almost any use, really kicks some serious butt, without making the lights dim. Could I go for a dual-core P4, with dual SLI 6800 cards? Sure. Do I need an IDLE draw of over 400W, in exchange for a few more FPS? I think not.


      Oh, and as a nice side effect of not drawing all that much power, I only need two fans in the case, a 900RPM 120mm in the power supply, and a 1500RPM 90mm on the CPU. It makes almost no noise, and I've never seen the CPU go above 50C.

    4. Re:Who still runs 100-watt computers? by Cecil · · Score: 3, Insightful

      My computers can make even a 250-watt powersupply catch fire (Panic and terror ensued, but the system survived)

      They're all relatively green though, because I pay extra to my local utility to have them put enough power from wind farms onto the grid to power my home. It's a different solution perhaps, but everyone has different needs.

      And I know what some of you want to say, so let me pre-empt you: Yes I know that my computers are powered by minced bird guts (B.S.) and weather pattern destruction (prove it)! Ha ha ha! I don't care. It's better than coal or gas or oil, so bite me, ok? Until direct solar energy becomes feasable, it's among the best solutions we've got.

  17. Server power consumption is way too big by Animats · · Score: 3, Insightful

    Server software technology keeps getting worse, as .NET, J2EE, Perl, PHP, Flash etc. are deployed for pages that could just as well be static. How many barrels of oil per day go into "ad personalization"?

    1. Re:Server power consumption is way too big by GigsVT · · Score: 2, Insightful

      That's not insightful, it's stupid.

      American Idol has about 26 million viewers. If each of those TV sets consumes 100 watts, then that's 2.6 million kwh per week. Assuming 25 new episodes per season, that's 65 million kwh, not even counting the broadcast side of things.

      That's about 38,000 barrels of oil per year for American Idol.

      My point isn't that we should get rid of that stupid show, my point is a lot of things use a lot of energy (a hell of a lot more energy than a few CPU seconds uses). So what?

      --
      I've had enough abrasive sigs. Kittens are cute and fuzzy.
  18. c-level for those that don't know by asoap · · Score: 2, Informative
    I had to look it up:

    C-level
    From Wikipedia, the free encyclopedia.

    c-level is an adjective used in a variety of industries to refer "chief" or highest-level executives. The term arises from an urge to group together the alphabet soup of acronyms (CEO, CFO, COO etc.) found in the upper echelons of the corporate world.

    --
    Treat me like a marketing stat, and I'll treat your movie like a series of ones and zeros
  19. Move the servers by G4from128k · · Score: 3, Interesting

    For many applications, the location of the server is not that important. Servers could be relocated to a cooler climate (avoiding the overhead of air-conditioning) or to an area of lower-cost electricity (e.g., Norway has aluminum smelters that take advantage of low-cost hydropower). At the very least, the server could be collocated at a nearby power plant to reduce transmission losses. One could also look into cogeneration -- using the heat of the server to warm water that is then used for another industrial process.

    --
    Two wrongs don't make a right, but three lefts do.
  20. Low-power shopping list by Brian+Stretch · · Score: 4, Informative

    1) Seasonic S12 series high-efficiency power supply. It makes a VERY noticible difference.
    2) Athlon 64 CPU (preferably the new Venice or San Diego core) and Socket 939 motherboard. Enable PowerNOW! power management (current Linux distros like FC3 support it automagically, some BIOSes don't enable it by default). The CPU runs at 800MHz at 1.1V core while idle, jumping to full speed as needed (just like a notebook). Even at full speed power consumption is about half that of an Intel P4 blast furnace. Run 64-bit Linux and get even more work done per watt.
    3) Avoid high-wattage video cards like the GeForce 6800 series in favor of 6600GT's. MASSIVE power consumption difference. Depending on how hard-core a gamer you are, the 6600GT's are good enough and a lot cheaper.

    See Newegg, etc for the parts.

  21. Green Web Hosting Services by Guano_Jim · · Score: 3, Informative

    If you're not interested in running your own alternative-energy IT setup, you can always outsource it:

    Solar Hosting uses renewables (i.e. solar, hence the name) to power all their web servers.

    Looks like they offer a complete solution package, from web design to hosting.

  22. Web hosting is a bad example by leoc · · Score: 4, Interesting

    Because they are already there. In fact I'd say 90% of all web sites out there are already running on less than the power of a 486 today. All 3 of my extremely low-volume web sites, for example, are not even running on real hardware. They are all virtually hosted along with hundreds of other sites on a single high power box. Web hosting companies operate on such a slim margin these days that they are the first to take advantage of any technology that saves energy.

    --
    STFU about slashdot bias.
  23. C was their GPA by Kyont · · Score: 3, Insightful

    C is for Chief, as in Chief Information Officer, Chief Executive Office, etc.

    In America, it also refers to the grade-point average they barely managed to maintain while drinking their way through college and bonding with their frat brothers' dads so they could get hired onto corporate management tracks at age 23 so they could schmooze their way up to officer-level positions by age 46 and make outrageous salaries "providing leadership" for the rest of us and offering cushy internships to their sons' marginally-literate frat brothers. Not that I'm bitter.

    --
    You shall see a cow on the roof of a cotton house.
  24. solar by DavidDeLux · · Score: 2, Interesting

    Its funny that this topic appeared on /. today - I've been considering changing my computers to make them more energy efficient.

    My electric bill has been increasing, thanks to having an ever increasing number of servers and workstations chugging away whilst I do development work on them.

    I've also moved from Windows to Linux devlopment, and have been shocked at just how good Linux is... good as in how little it needs in terms of hardware:

    • my Windows 2003 systems run P4 processors with 1G RAM, huge hard drives, etc., and throw out quite a bit of heat...
    • My GNU/Linux (Gentoo) systems run on rather modest AMD 2200+ systems, with tiny hard drives

    The joke is that the Linux machines are far more responsive than the Windows machine (and how little space the OS and applications occupy - how I hate bloat). Sure, compiling seems slower, but when running code, they just fly.

    So, by moving to Linux I don't need high-powered machines, which means the costs are much lower (both capital and running. Being a bit of a geek, I'm probably going to throw the PSU out of the Linux machine and replace it with a DC-DC converter fed by a solar-panel... so my computer running costs will be effectively free... and the capital outlay for the solar panels and DC-DC is rather modest (thing 100s not 1000s of Euros).

    .

    Now, if more people switched to Linux, they could use less hardware hungry machines, which need less power (and could easily run from solar).

  25. Re:Considering mac mini's take less power than cpu by bfizzle · · Score: 4, Interesting

    Use a laptop then. The conversion is done on the power strip. Take out the battery and just run off your custom solar power supply then no lossy conversion and you don't have to alter a power supply.

  26. Building Architecture by NormAtHome · · Score: 2, Interesting

    During the good years (gone but not forgotten), I worked in several large office buildings.. Six, eight and ten stories, none of which could be considered new and I can tell you the people who designed them had no idea what the PC computer revolution would bring. With anywhere from fifty to two-hundred PC's to a floor the buildings air conditioning system in each case was totally incapable of handing the kind of heat thrown off by that many PC's. In one building (in the warmer months) they had to have someone in at 5am to crank the air conditioning as low as it would go (the air conditioning system was centrally programed to shut off at night, nothing we could do about it), then as the day went on it would go from 60 degrees with all machines off to just under a 100 by the end of the day.

    On my last move from one building to another I was thinking how buildings now should have some kind of special exhaust conduits built into the floor with exhaust ducts on the PC's like a gas dryer. That way the buildings air conditioning system wouldn't have to deal with all that, and in the winter time you could use that heat to help warm the building.

  27. Re:A Short Story... by NerveGas · · Score: 2, Informative


    30% efficient? Your numbers are hugely off. That might have been true waaaaaaay back in the day before switching power supplies, but it's not now. If that were true, a power supply delivering 300 watts to the computer would have to pull a kilowatt from the wall, and two computers would be enough to trip a 15-amp circuit that is so prevalent in newer construction, three computers would be much more than enough to trip a 20-amp circuit.

    At normal load, most power supplies are around or above 70% efficient, primarily because the ATX 12V v2.0 specs explicitly call for a minimum efficiency of 70% at full load.

    Now, note that even ultra-high-efficiency power supplies, which cost more than just double what a normal power supply costs, only specify 85% efficiency (an increase of 21%), and are reputed to save $17 per year per PC. For realistic usage of 3 hours per day, 10 cents per KW/h, 200 watt draw (which for AVERAGE usage is probably high), you would actually end up saving (365 days * 0.6 kw/h/day * .21 efficiency * .1 dollars/kilowatt/hour)=$4.60 per *year*.

    Maybe it's just me, but spending an extra $100-$150 on a power supply that will save just $4.60 per year seems a bit silly.

    On the other hand, purchasing a more efficient platform to begin with will save VASTLY more electricity. Replacing that with one of the efficient designs from Via would end up with a total real-world consumption closer to 40-50 watts. Switch from a CRT to an LCD, and you've dropped that from ~100 watts to ~35 watts.

    Of course, if we simply increased the CAFE (Corporate Average Fuel Economy) by just five MPH, we would likely do far, FAR more good not just for the environment, but for world stability as well.

    steve

    --
    Oh, you're not stuck, you're just unable to let go of the onion rings.
  28. Re:Power is a big issue-Thermal Sink. by Retric · · Score: 2, Informative

    storing heat for 5 months in a big tank of water would need tons of insulation.

    It depends on the size of the tank / house. Anyway, 4+ feet underground should provide plenty of insulation check out the permafrost layer up north to see how well that much ground insulates over a few months. I don't know how large a tank you would need for storage capacity but I would go for 10 -20 heat conductive pilings in the ground or water pumped though a pipe the ground as you don't need to use water in a tank for storage capacity when the ground works just as well. As to the day / night cycle that greatly increases the efficiency of these systems but it's not that hard to go from 40deg over 1 day to 40 deg over 200 days as long as your spending less cash on capacity than you are on energy.

  29. Here's a question... closer to home... by lpangelrob2 · · Score: 2, Insightful
    Would you be willing to be willing to save energy by turning off your computers when you're not at work/home? Would you do it to forego being on the top of this list? Or is finding aliens / folding proteins more important than saving energy?

    Actually, to take the planks out of my own eye first, I probably ought to shut down the PC at 5:00p myself. (I'm at work) :-) The Macs at home (should) automatically go to sleep, though they haven't lately...

  30. Overkill is still overkill by Mr+Guy · · Score: 4, Informative

    You must be out of touch if you think the vast majority of people use that much power all the time.

    PSU Needs Calculator

    Using this calculator, a sample system I just made up only needed 319 watts of peak power. To get that, I needed to be running the 3gig barton chip, 2 sticks of ram, 2 hard drives, a Radeon X800, sound, NIC, with 3 fans fullblast and 2 cathode tubes, and a dvd player. Keep in mind that's PEAK power required, which means all of that has to be going top speed to get there, which means something along the lines of running 3D mark while copying a dvd from one drive to the other while playing sound while downloading a file over the internet while having all your fans and lights cranked up.

    Hate to break it to you, bud, but just cause you have it doesn't mean you are using it.

  31. Re:Considering mac mini's take less power than cpu by Rei · · Score: 3, Insightful

    My pocketbook.

    Solar power systems aren't cheap. Hopefully at least one of the ongoing research projects into organic solar systems will fix this. :) I especially like nanosolar's approach (taking an orderly molecular matrix and using it as a template for insertion of molecules at proper spacing for efficient solar power generation), although we'll have to see if they can pull it off in bulk.

    --
    Freeze Ray. Tell your friends.
  32. I don't think it is the battery gauges.... by AKosygin · · Score: 2, Informative

    The reason why laptop *appears* to have battery capacity gauges that don't like being left on A/C power for a couple of months is not the gauge, it is the battery.

    Lithium Ion batteries works poorly in constant full charge conditions and in hot temperatures. Their effectiveness degrades in heat and constant full charge. And guess what? A constant plugged in laptop has BOTH! Heat from the computer and full charge all the time. So a laptop left plugged in for months will kill the battery fast with the heat it generates and the constant charge of the battery.

    Read here: http://www.batteryuniversity.com/parttwo-34.htm

  33. Solar power by falconwolf · · Score: 3, Insightful

    The mini reminds me of a friend who used an old 68k macintosh as a webserver. her desktop was plugged into mains power but the little web server only used 17w of power to run all day every day, and was on a solar power setup with battery backup. last time I heard from her it had gone down from lack of power only twice in a year.

    There's a hosting company that runs on solar power, Solar Host.

    Falcon