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High CPU Voltage

B

bluestrobe

Platinum Member
I currently have 2 x 933 mhz/133mhz FSB P3 Coppermines running on a Thunder HEsl S2567. As my other threads state, they are running too hot for my comfort. I am using the same heat sinks with them that came from their last board and on that board they didn't get much above 77F. I found out the default voltage is 1.65v but in BIOS they are running at 1.7v to 1.71 volts and the temps are 45C and 60C respectively. I had the idea to bump the voltage down but found nothing about the CPU properties could be changed. Is there a way I could change them to see if the temperatures would come down or does a voltage increase this much not make that much difference?
 
It probably wouldn't make a difference. That's only a ~3% increase, and may only be indicative of your motherboard oversupplying the chips or not reading the voltage exactly correct in bios. My question is are your 45 and 60C temps idle and load or are the two CPU's running that much differently with the same HSF's?

Did you use new clean the CPU's and use new thermal paste when you swapped them in? Are you having stability issues, or is the number just looking too high?
 
This is on a server that has been running for about a week and a half with no problems. I plan on putting bigger heatsinks on the cpu's when I get them on the 20th. The heatsinks are hot to the touch though which makes me think there is proper contact between the HS and the CPU. The temps are in BIOS and I haven't installed an in OS temp monitor yet, what is a good one?
 
The voltage problem falls within the +/-5% range so that is not an issue.

The temps are.
45C is high but 60C is much to high for a Coppermine chip.
Normal is low 30's @IDLE, upper 30's UNDER LOAD.

Seems to me there is a problem with the mounting of the heatsink (common problem).
The CPU shuld be to hot to touch rather than hot to touch.

Another item to look at is the PSU. How old is it? How many hours are on it?
 
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