KS1
01-07-2003, 03:03 AM
System:
A7V8X
AMD 1800+ T-bred A + Thermosonic ThermoEngine Alu HSF
Ambient 18C constant
Temp reading from MBM5210
Condition:
1. I lapped CPU die together with a Thermaltake copper shim. (I found that CPU die is not flat at all)
2. I replaced the stock fan with a 80mm Delta AFB0812SH to a heatsink.
3. I also inserted a 6mm copper plate the the base of the heatsink.
Result:
CPU temp is 35C when o/c 1916MHz 11.5x166 @ 1.7V, ambient 18C
I did a new experiment--replacing a 6mm copper plate with a 3mm silver plate.
As silver is better at conducting heat, I expected the temp to be lower.
Result:
CPU temp went all the way up to 48C and CPU would not run at 11.5x166 anymore. I got to go back to 1533MHz.
I took a silver plate out and re-lapped again and again. I made sure that the silver plate made full contact with the CPU Die. But the result didn't change significantly +/-1C
I went back to a copper plate again. CPU temp went down to a normal level 35C and ran at 1916 MHz comfortably.
Do you have any comment/idea/suggestion?
A7V8X
AMD 1800+ T-bred A + Thermosonic ThermoEngine Alu HSF
Ambient 18C constant
Temp reading from MBM5210
Condition:
1. I lapped CPU die together with a Thermaltake copper shim. (I found that CPU die is not flat at all)
2. I replaced the stock fan with a 80mm Delta AFB0812SH to a heatsink.
3. I also inserted a 6mm copper plate the the base of the heatsink.
Result:
CPU temp is 35C when o/c 1916MHz 11.5x166 @ 1.7V, ambient 18C
I did a new experiment--replacing a 6mm copper plate with a 3mm silver plate.
As silver is better at conducting heat, I expected the temp to be lower.
Result:
CPU temp went all the way up to 48C and CPU would not run at 11.5x166 anymore. I got to go back to 1533MHz.
I took a silver plate out and re-lapped again and again. I made sure that the silver plate made full contact with the CPU Die. But the result didn't change significantly +/-1C
I went back to a copper plate again. CPU temp went down to a normal level 35C and ran at 1916 MHz comfortably.
Do you have any comment/idea/suggestion?