View Full Version : Energy Efficient CPU's?
regomodo
September 2nd, 2007, 12:24 PM
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PatrickMay16
September 2nd, 2007, 12:38 PM
Maybe you could get some kind of AMD processor, and change the CLOCK speed, and change the CPU CORE VOLTAGE?
I'm no joker with this CPU stuff. I'm going to give this a go on my own AMD machine and see what happens.
regomodo
September 2nd, 2007, 12:43 PM
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Taino
September 2nd, 2007, 01:02 PM
If your just going to run a file server and want to run cool and run low voltage how about running on an much older system? like real old, im talking i386 old?
I have a old box here that was going to be thrown into the scrap heap by a neighbor of mine but knowing im a PC fanatic he thought to ask if id like it before he chucked it outside, so i said sure, its a i386 with a separate i387 co-processor, both are socketed and it runs just on the i386 chip alone if you pull the i387 chip, im planning on turning it into a file server running NetBSD... why? well... the thing runs super cool, its has no heat sink or fan on either processor chip and never needed any, it just has the main cooling fan blowing air thru the case and across the chips location and that seems to be all it ever needed, it was designed that way, and the i386 chip uses very little power.
Something to consider if all its going to do is serve some files and sit in a corner.
Just a thought.. :KS
angryfirelord
September 2nd, 2007, 01:53 PM
VIA cpus are more meant to be used in very small form factors. The PC itself may only consume 60 watts, but building around a VIA cpu isn't the most cost effective in terms of bang-for-your-buck.
Your best bet would be a mobile CPU, such as a Pentium M.
regomodo
September 2nd, 2007, 02:17 PM
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Crashmaxx
September 2nd, 2007, 02:25 PM
The Core 2 lineup is based on the same type of architecture as the Pentium M. One of there best features is there low energy use. And the amount of processing power you get for the price is so good, that I wouldn't bother with something single core.
And AMD now makes a series of energy efficient versions of many of their chips. They are about $40 or so more then the regular versions and may be hard to find though.
Here is a very good article that covers the details of both:
http://techreport.com/articles.x/10351
teet
September 2nd, 2007, 02:59 PM
Check out the Celeron D 4XX series.
They are basically the "singe-core celeron'ed" version of the core 2 duo. They're really cheap and would be great for a server. I recently built a mythtv box and used the 420 model. No complaints.
-teet
ssam
September 2nd, 2007, 03:18 PM
http://www.mini-itx.com/ have via motherboard (cpu is already attached) and cases.
my MII6000 uses about 20 W.
otherwise the intel core series seem quite good.
also see http://efficientpc.co.uk/
tgalati4
September 2nd, 2007, 03:41 PM
Via 1 GHz Epia mini-ITX boards draw around 12 watts, you can get the lower-end boards since you don't need the mpeg decoders or higher-end graphics. Fanless-CPU and on some boards you can declock to 800 MHz.
stmiller
September 2nd, 2007, 03:54 PM
Better to get a modern processor than an old 386 or 486. An AMD X2 cpu uses less power and runs cooler than a 486...
mips
September 2nd, 2007, 04:29 PM
The Longsoon or Godson CPU based on MIPS arch apparently uses very little power (<10W I think) and gets relatively good performance.
Debian, Gentoo, Slackware & Red Flag linux runs on it. There is probably more.
http://jcste.ict.ac.cn/paper/hww_071.pdf
regomodo
September 2nd, 2007, 04:32 PM
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a12ctic
September 2nd, 2007, 04:58 PM
The AMD opteron series is by far the best server platform chip right now, they are a ton more efficient than the C2D. The C2D line might do okay with cache based tasks and 3d rendering but the opteron still destroys in a server enviroment, energy wise, and perforamnce wise. Also, you can find the high end operton chips for a very low price, especialy for S939.
PatrickMay16
September 2nd, 2007, 06:08 PM
The AMD opteron series is by far the best server platform chip right now, they are a ton more efficient than the C2D. The C2D line might do okay with cache based tasks and 3d rendering but the opteron still destroys in a server enviroment, energy wise, and perforamnce wise. Also, you can find the high end operton chips for a very low price, especialy for S939.
YOU SAID IT BROTHAR. OPTERON 4 LIFE.
mips
September 2nd, 2007, 06:15 PM
Also, you can find the high end operton chips for a very low price, especialy for S939.
I would like to get a Opteron for my desktop, just hope the s939 chips are still available when I eventually do.
a12ctic
September 2nd, 2007, 06:30 PM
Yeah, they're a great buy right now, AMD is still producing them for a few more month, so you have a little bit of time.
alasondro
September 5th, 2007, 01:59 AM
I think you could easily make a fileserver based on a mobo like this one
http://www.pcengines.ch/alix1c.htm
or this one
http://www.genesippc.com/efika.php
%hMa@?b<C
September 5th, 2007, 01:59 AM
amd opteron is great for energy
i hvae opteron 165 (dual core)
regomodo
September 5th, 2007, 10:49 AM
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