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core2duo core temperatures

Joined
Aug 21, 2008
Messages
2
i have a core2duo e8500 running at stock speeds.

today i installed a xigmatek 1283 heatsink.

i used speedfan & coretemp to check the temperatures after and these were the results

SPEEDFAN
Core0: 39C
Core1: 28C

CoreTemp
Core0: 44C
Core1: 33C

these temps are when the comp is just sitting idle in vista.

i find it strange that there is an 11C temp difference between the two cores. i'm using the backplate mounting bracket for the xigmatek and have made sure that the heatsink is mounted evenly.

before this xigmatek, i was using the stock intel heatsink and i had a temp difference of approx 10C between the two cores and Core0 was around 52C and Core1 was aruond 42C at idle. so using the xigmatek dropped the temps by 10C but the difference between the two cores still exist.
 
Could the IHS be uneven? Try taking the heatsink off and looking at the pattern of the thermal paste now.

If not that, then maybe your core-to-IHS contact is uneven...which in that case there isn't too much you can do besides delidding the chip.
 
it may be just the way that 45 nm chips are mine is like that too
 
freind of mine has the same problem, those e8xxx's have woeful temp sensors apparently.. OR they might be right but i doubts it
 
the question is what one is closer to the truth
the odd thing is the delta closes to about 3-4 deg c at full load
core 0 will read 51c and core 1 will read 46~47c
 
try the program realtemp, for some reason it works best for me on my abit IX38 quadgt board with a e8400.

I've heard realtemp works good with the new 45nm chips, especially the e8XXX series...

With core temp/bios/speedfan, they had been measuring my temps around 50C (even after re seating the heatsink).. but with realtemp it reads at around 40C at 3.5ghz = 1.25V.

I dont know which ones are correct, but for me i'm going to follow realtemp...

but if there is a big difference, even after you have checked the other temp places, trying re seating it again...
 
realtemp gives this:
Core0: 35C
Core1: 24C

my room temp is in the mid 20's, a temp of 24C on core1 doesn't seem right.

i reseated the heatsink again. same results.

at what temp is the cpu in danger of being damaged. high 60s?
 
realtemp gives this:
Core0: 35C
Core1: 24C

my room temp is in the mid 20's, a temp of 24C on core1 doesn't seem right.

i reseated the heatsink again. same results.

at what temp is the cpu in danger of being damaged. high 60s?

80c is were if gets dicey

60c is fine 70 is ok... but wouldnt let get much hotter
 
at what temp is the cpu in danger of being damaged. high 60s?

Intel guarantees the CPU at up to 1C below Tjmax IIRC. Since Tjmax for your CPU is estimated to be about 95C, theoretically you could run your CPU at 94C and be fine. However, I recommend you stay below 75-ish.
 
TjMax number were just put out
7000 and 8000 CPU have a TjMax of 100c:eek:

Desktop TJ For Dual and Quad Core CPUs
45nm Desktop Dual-Core Processors TJ
• Intel® Core™2 Duo processor E8000 and E7000 series 100°C

45 nm Desktop Quad-Core Processors
• Intel® Core™2 Quad processor Q9000 and Q8000 series 100°C
• Intel® Core™2 Extreme processor QX9650 95°C
• Intel® Core™2 Extreme processor QX9770 85°C
 
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