Coolest / Lowest power modern desktop CPU?

[jrichrds]

Which modern desktop CPU over 1.5Ghz runs the coolest / uses the least power?

Can anything these days have comparable heat output to, say, a 550Mhz PPGA Celeron? I'm guessing not, but I remember the higher speed FCPGA chips running cooler than the PPGA ones.

 

[Zebo]

Some AMD Mobile Bartons use 35W and is 1.8 GHz.

I passive cool the 45W version of this chip with a zalman copper flower @ 1.2GHz and 1.25 Volts. My guess is it uses about 20W.

Default Watts * (Overclocked or Underclocked Mhz \ Default Mhz) * (Overclocked or Underclocked Vcore \ Default Vcore)^2 = Overclocked or Underclocked Watts


EDIT:
Here's the 35W wonderchip: http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-439&depa=0

 

[Zap]

I have a mobile Athlon XP 2600+ plus some mobile Celeron 1.6GHz (256k cache, socket 478). They all run pretty cool at default speeds. The Celeron seems okay even at 2.7+GHz, nice and cool with an old retail box HSF.

 

[jagec]

Man, those mobile athlons are good at EVERYTHING

 

[Zebo]

not at sse2 or hyperthreading.

 

[jagec]

Originally posted by: Zebo
not at sse2 or hyperthreading.

the extra $140 in your pocket buys you a lot of other hardware that you can actually TELL makes a difference

 

[Avalon]

35w mobile bartons should run pretty cool. I'm not sure how it compares to the 550mhz Celeron though. I'll have one today and see how cool it runs on normal desktop barton settings, if you like.

 

[daniel1113]

Originally posted by: jagec

Originally posted by: Zebo
not at sse2 or hyperthreading.

the extra $140 in your pocket buys you a lot of other hardware that you can actually TELL makes a difference

HT makes a big difference, if you are using the correct applications

 

[gwag]

[
HT makes a big difference, if you are using the correct applications

yes it slow down lots of things

 

[oldman420]

Originally posted by: Zebo
Some AMD Mobile Bartons use 35W and is 1.8 GHz.

I passive cool the 45W version of this chip with a zalman copper flower @ 1.2GHz and 1.25 Volts. My guess is it uses about 20W.

Default Watts * (Overclocked or Underclocked Mhz \ Default Mhz) * (Overclocked or Underclocked Vcore \ Default Vcore)^2 = Overclocked or Underclocked Watts


EDIT:
Here's the 35W wonderchip: http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-439&depa=0

i fully agree and am ordering one now

 

[Hyperlite]

i didn't realize there was a 35w 2400+. short of that link, i can't find it on newegg. the only 35w chip that shows up in the XP-M's is the 2200+....??

 

[jswjimmy]

via makes a 1.2ghz chip that runs at 11watts

 

[Zebo]

Originally posted by: oldman420

Originally posted by: Zebo
Some AMD Mobile Bartons use 35W and is 1.8 GHz.

I passive cool the 45W version of this chip with a zalman copper flower @ 1.2GHz and 1.25 Volts. My guess is it uses about 20W.

Default Watts * (Overclocked or Underclocked Mhz \ Default Mhz) * (Overclocked or Underclocked Vcore \ Default Vcore)^2 = Overclocked or Underclocked Watts


EDIT:
Here's the 35W wonderchip: http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-439&depa=0

i fully agree and am ordering one now

I sorta cheat doing it. While the Antec Aria case only has one fan, the 120mm inside PSU, it happens to be located right next to flower which automatically whisks air past flower as it's passing though case.

Anyway the setup is totally silent just for internet browsing/office use inside bedroom on 24/7.

Potential noise makers:

Mobo - Shuttle MN31N on-board vid/sound with modded passive northbridge.
Chip- Mobile 2600 @1.2Ghz (200x6) passive zalman flower
Harddrive- Fujitsu 60GB 5400RPM Notebook Hard Drive suspended with bungie cord acrross CD rom bay.
CD- None, that's what home networks are for

 

[Falloutboy]

also I think amd is coming out with a new Geode line of chips that work in socket A and are designed to compete with cia C3 chips. they have a 1ghz version thats only 6watts

 

[oldman420]

would you have to do a undervolt mod with a 1 watt chip seems like 1.6 v which is as low as my board would go would kill it

 

[jswjimmy]

Originally posted by: oldman420
would you have to do a undervolt mod with a 1 watt chip seems like 1.6 v which is as low as my board would go would kill it

what board are you useing, i can get my an35n-400ultra down to 1.1vcore

 

[NintendoFan]

Take a look at these:

35W Mobile Athlon 64s

 

[jpeyton]

I've been able to run my regular TBred B at 1GHz at 1.1v; 13W.

The main limitation is what voltages your motherboard supports.

A 35W XP-M would draw under 10W at 1GHz/1.1v. Passive cool it with a good heatpipe.

 

[oldman420]

ASUS 87N8X-E DELUXE
AMD MOBILE 2600 BARTON CPU current at 12.5x 200 1.7 vcore
3 STICKS OF CORSAIR XMS DDR400 2-3-3-6 @ 200 MHZ
2 36 GIG RAPTORS
13000 3dmark 2001
525 performance test,4000 pcmark 04
the lowest bios setting is 1.5 vcore in bios

 

[oldman420]

last night just to see i took my mobile 45 watt chip down to 16 watts ran p95 all night no errors also topped out at 30 c i could have unpluged my fan my settings were 100 x 5 @ 1.28 vcore. i call that low power consunption