Coolest / Lowest power modern desktop CPU?

jrichrds

Platinum Member
Oct 9, 1999
2,537
3
81
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

Elite Member
Jul 29, 2001
39,398
19
81
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

Elite Member
Oct 13, 1999
22,377
2
81
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

Lifer
Apr 30, 2004
24,442
6
81
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

Diamond Member
Jul 16, 2001
7,565
150
106
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

Diamond Member
Jun 6, 2003
6,448
0
0
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 ;)
 

oldman420

Platinum Member
May 22, 2004
2,179
0
0
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

Diamond Member
May 25, 2004
5,664
2
76
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+....??
 

Zebo

Elite Member
Jul 29, 2001
39,398
19
81
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

Diamond Member
Jan 2, 2003
5,916
0
71
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

Platinum Member
May 22, 2004
2,179
0
0
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

Senior member
Jul 24, 2003
892
0
0
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
 

jpeyton

Moderator in SFF, Notebooks, Pre-Built/Barebones
Moderator
Aug 23, 2003
25,375
142
116
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

Platinum Member
May 22, 2004
2,179
0
0
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

Platinum Member
May 22, 2004
2,179
0
0
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