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Q9650 wide temp range between cores

jonstatt

jonstatt

jonstatt

Associate
Joined
23 Jul 2007
Posts
126
Using coretemp...and I haven't set any offset for 45nm, so I think it is over-reading 5 degrees.

At idle with Zalman 9700 using AS5 (using a line across the chip per AS recommendations on their website)

38, 28, 28, 38

At load

55, 45, 45, 51


Don't these look really weird? I thought core0,1 were a pair and core 2,3 were a pair...so how come 0 and 3 are the hotter ones?

Just to make sure, I cleaned the Zalman and CPU again and re-applied the AS5 for a second time, as per Arctics recommendations...and got exactly the same result.


All of these temperatures are probably reading 5 degrees over due to coretemp and the wrong offset.....but it was the wide disparity between cores I was curious about.
 
That implies to me that the heat is being dissipated better from one side of the CPU than the other. So probably your heatsink is not mounted as well as it could be. Try reseating it and see if that improves matters?
 
fross said:
That implies to me that the heat is being dissipated better from one side of the CPU than the other. So probably your heatsink is not mounted as well as it could be. Try reseating it and see if that improves matters?
Click to expand...

I had a look again the heatsink seating and it seems okay.

The strange thing is that it is cores 0 and 3. If it was one side it would one of 0,1 or 2,3 or 0,2 or 1,3.....but for it to be cores 0 and 3, that would be diagonally across the chip!

I am not going to stress about it too much, because its not exactly running hot....but then I haven't started to OC it yet.
 
The heat spreader on top on the cpu is not flat, some members lapped there cpu to get a flat surface.
 
RJC said:
The heat spreader on top on the cpu is not flat, some members lapped there cpu to get a flat surface.
Click to expand...

It could be that. I got lucky with the Q6600 I had before because all cores were within 2 degrees of each other.

Not totally keen on lapping the CPU but I may consider it if the temperatures become a problem as I OC. 10 degrees seems quite a difference, so I may find it comes into play once I try hitting 4Ghz.
 
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