57+C max load on a 650 cb0

gstp

Member
May 17, 2000
26
0
0
i have a pIII 650 cb0 running at 650 w/1.65v right now due to heat...at idle its about 22c...but as soon as i play a game or run seti or something of the sort it instantly jumps to 57c and higher. i have a cuv4x and a alpha pep66 on it. as far as i can tell the connection between the two are fine but i can't for the life of me figure out why it gets so high

any advise?
 

Klosters

Golden Member
Oct 9, 1999
1,428
0
0
You did use a thin layer of thermal paste on top of the CPU? If I remember correctly, the P3V4X reports CPU temp as being higher than it really is, and needs a Bios update to fix this. Maybe the CUV4X does too?
 

AdamK47

Lifer
Oct 9, 1999
13,289
689
126
I'm beginning to think that it's how the internal diode reads the temp in the new cB0 stepping. I have a 500E and a newer 650E based on the cB0 core. I can install them the same exact way in my P3B-F, clock them to around the same speed (140x5=700 for the 500 and 110x6.5=715 for the 650), but for some reason the 650E reports a much higher CPU temp. The 500E at 700MHz stays around 44 degrees, while the 650E at 715MHz jumps to around 56 to 58 degrees.
 

flenn

Senior member
Oct 9, 1999
649
0
71
My 700E@933 runs in the mid 50s when under load. This kind of blew me away when I first installed it. I don't know what's up but I'm beginning to notice a lot of people with the same experience. At first I wasn't going to clock it so high, thinking the heat would be a problem. But I decided to ignore the temperature and let the chip do it's thing. Heck, if I didn't have a temp monitoring utility, everything would be fine.
 

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