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Running an XP with just a high end heat sink?

M

MisterDuck

Member
has anyone tried running an XP with just a heatsink (like one of the lower clocked ones - 1.33)? In the setup I have, the power supply fan is right above the CPU/heatsink and I was wondering if perhaps that would be enough (it's an enermax 80mm fan on the PS).

Maybe if I drop the clock speed and the core voltage? I'm willing to sacrifice speed to just have a high quality passive solution and forgo any noise. If anyone out there has tried this, please tell me your results.
Cheers.
 
Don't think that would be possible or advisable. The only time I decrease fan speeds (never turned off, too scared) is when I put it into standby for the night. AMD's run too hot.
 
I would suggest using a low CFM 80mm fan at the least. You can try running your computer with an Alpha PAL8045 and no fan, but have a fan plugged in on hand just in case it overheats. You will be running the CPU at temps that are too hot for comfort, IMO. That means decreased life span of the CPU. If you wanted a passive cooling solution, you should have gotten a Via C3 or an Intel PIII Tualatin. An AMD CPU is definitely not something you want to fool around with passive cooling on 😉
 
Hmm.. You can use a Alpha and a 80mm 20db papst fan, that'll be as close to no fan as possible.

AMDs do ususally run hot but i believe the new palomino cores have an overheating protection like the intel CPUS that cuts out when temp is too high thus saving you the chip.

Thunderbirds and such do not have these protection so if a heatsink fell off youll see some smoke from that CPU.

Try the alpha w/o the fan first and see how high the temps go up. If you'r comfortable with the temp then you can keep it.
 
Water-cooling is silent. You just hear the PSU fan. Or you could build a rheostat that would drop your cpu fan to ultra-low rpm's. I don't think passive cooling is possible for an athlon. My old Dell PentiumIII 450MHz had a passive heatsink. The case exhaust fan had a plastic shroud attached that covered the CPU, forcing air to be sucked through the heatsink before being exhausted out of the case. Intel chips run a lot cooler though and it was only a 450 Mhz chip.
 
Have any of you guys actually tried it, though? I would figure that decreasing the clock speed and the core voltage would significantly decrease heat output.

I already have a very quiet HSF, so that's not really a concern - I'm just curious if anyone has tried it and what their results were. Has anyone underclocked an XP and gotten decent core temps?
 
Maybe when they produce the thourougbreds that might be possible. Its going to be smaller so that means less heat, but you would still have to underclock and probably lower voltage.
 
It depends on what you mean "high end HS" 🙂)))

There is no way to run a chip that pumps 60-70W heat with just a simple HS. You would need a very big HS.

Cheers,
 


<< It depends on what you mean "high end HS" 🙂)))

There is no way to run a chip that pumps 60-70W heat with just a simple HS. You would need a very big HS.

Cheers, >>



Athlons consume 50-60 watts of POWER but it doesnt necessarily mean that it puts out 50-60 watts of heat. If it were true, your CPU is a small haeater and not a CPU. There were some tests in which Alpha 8045s ran with a low noise 20cfm fans and the temp didnt rise too high. If a you have a good airflow with an 80mm exaust near the CPU, it should compensate for the 20cfm fan.

I'll post the link with the low noise fan tonight.
 


<< Have any of you guys actually tried it, though? I would figure that decreasing the clock speed and the core voltage would significantly decrease heat output.

I already have a very quiet HSF, so that's not really a concern - I'm just curious if anyone has tried it and what their results were. Has anyone underclocked an XP and gotten decent core temps? >>




Back when I didint have any thermal compound, I underclocked my XP1700 from 133 to Duron speed of 100 Mhz just for fun. The CPU temp dropped by 5C.
Dropping the voltage from 1.75 to the DURON SPEC 1.65 did not lower the temperature nor the stability of the system.
 
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