Utilisation de Prime95 pour analyser les températures inégales du cœur
Utilisation de Prime95 pour analyser les températures inégales du cœur
I was testing cinebench and achieved fairly consistent temperatures across all cores, with only a 6°C variation between the lowest and hottest cores.
However, with Prime95 there were fluctuations of up to 17°C on two cores, which was completely unexpected.
This setup runs a 9700k at 5GHz, reaching a maximum of 80°C in Prime95 but just 69°C in cinebench.
ivandanko :
jojesa :
Try
Prime95 version 26.6.
That works fine but the temps are fairly low compared to newer prime95?
Just as it should be, and as expected.
ivandanko
,
Sorry you missed the memo. Do
not
use Prime95 versions
later than
26.6. Here's why:
Not all loads are created equal. “Stress” tests vary widely and can be characterized into two categories;
stability
tests which are
fluctuating
workloads, and
thermal
tests which are
steady
workloads. Intel tests their processors at a
steady
100% TDP workload to validate Thermal Specifications.
Prime95 version 26.6 Small FFT's is ideal for CPU thermal testing
, because it's a
steady
100% workload with...
Conducting additional trials shows mid high 70s across several cores, with four in the low 40s.
This analysis employs Prime 95s with small FFTs for testing.
It seems the Intel guidelines might not match the current Intel specs. The Prime95 version might not be fully optimized for the 9th generation yet. Consider using Prime95 26.6 instead. Additionally, Intel allows a 10° C variation in both the highest and lowest core temperatures due to factors like thermal solution application between the IHS and die, or Digital Thermal Sensor inaccuracies. If you notice a 20° C difference, it may indicate an issue requiring a return for replacement.
CompuTronix:
Which version of Prime95?
29.4b8
I haven't found any other good free CPU tests I've tried, like cinebench, aida64 extreme, and 3dmark demo time spy. All the temperatures are fine.