The new P3-1000A 1.45v low voltage CPU - can it run using only passive cooling?

[PeeluckyDuckee]

Meaning no fans at all for straight 24/7?? It has the same spec as the old 1Gig P3? 133mhz FSB? 256k cache? I have a MSI 694D Pro dual mobo, it would work with that I assume?

The P4-A 1.6G is a better deal, of course, but I don't wish to switch motherboard and have to acquire new ram, along with a new PS.

 

[BD231]

I dont think it would be a good idea. I know a celeron 1.0a thru 1.3a can, it's basicly a P3 but on a 100mhz fsb.

 

[m2kewl]

I just got a Dell 1400SC with the P3/1Ghz/256k chip from the H/D forum - when I opened it up, there was just a big heatsink. Since it's still under warranty, I've ran Sandra/Prime95 benchmarks for past 5 hours, no crash yet.

But I still wounldn't recommend doing it w/o active cooling...

 

[The_Lurker]

If you've got a really big heatsink and some good case cooling.. yeah... Dell's and some other OEm's only use passive cooling, keeping in mind they duct the heatsink to a case output though

 

[Soldat]

i agree with the lurker and plan to try passive cooling on my dual tualatins.....zalman heatsinks with decent airflow through the case sounds good to me in theory.

any danger of frying the processors or will the system merely lock up if it gets too hot?

 

[Assimilator1]

Why even bother risking it? ,a cpu fan isn't very expensive & its no big deal.

Sure OEM's have done this for sometime with various CPU's but they have the gear to test it out.

any danger of frying the processors or will the system merely lock up if it gets too hot?

Assuming you were unsuccessful it would depend how unsuccessful you were ,worse case scenario ,you could fry the CPU & kill the m/brd!:Q

 

[chemhaqr]

You could run that chip at around 1.1v or lower. Yeah it can be passively cooled. I cool a PIII 1.2GHz/1.2v tualatin passively. I have only two fans in the computer. One on the PSU and one pulling air off the hs via duct similar to the OEMS, HP and Gateway. Don't listen to these dippy's. I use a pal6035 for this. If you set it up right it will work and work very quietly.

 

[Auric]

Indeed. You're not talking about no airflow at all right?

My PSU is mounted on the side next to the CPU and has thermal variable circuitry on board with a quiet fan on the inside side. The CPU freqs run in this setup have been: C464 (?V), C825 (1.65V), P1234 (1.65V), C1478 (1.53V). The last is essentially the same core you are talking about (C1100 @ 133 FSB). I have not bothered to run it any faster yet because the only thing worth o'erclocking for is games and the viddy card is already maxed out.

Maybe if you live in the Sahara desert this will not work for you but normal room temps it's all systems go.

 

[oldfart]

As above, if your mobo supports undervolting, you can run the CPU at lower voltage than stock. My PIII-S 1.26 will run ~ 1.225 Vcore @ stock speed. Good luck with the project.

 

[Assimilator1]

chemhaqr
Don't listen to these dippy's. I use a pal6035 for this. If you set it up right it will work and work very quietly.

Dippy yourself ,if you read my post properly you would of seen me say if you get it wrong,the converse of 'if you set it up right.
And how can you know before hand whether you have enough cooling if you don't have any experience in it?

And I dont see why it would be any quieter if you are replacing the CPU fan with an additional case fan! ,I could understand it if the PSU fan was used to draw air off the cpu HSF though.

What temps does your CPU run at?