High Temps 9700K@5ghz
High Temps 9700K@5ghz
my 9700k@5ghz 1.35 model has survived over 10 hours of AIDA64, Cinebench and gaming for about 8 hours, but it still crashes on OCCT within a few minutes. Is this considered a stable OC? Increasing the voltage to 1.37 and 1.38 didn't help much.
If you can run smoothly without issues, I wouldn't have much concern. Even if stability isn't perfect under all loads, a crash seems unlikely to be severe. Ockt might be relying on instructions that aren't typical for your workload. I'm especially concerned about AVX instructions which are very demanding. You could adjust your OC BIOS settings to include an avx offset of 2, which would lower the multiplier by 2 when those instructions appear.
Crashes or exit? Occt has a default shutdown at 80°C, so increasing voltages is actually counterproductive.
Occt relies on linpack, which represents a high mix of CPU and RAM usage, much like AVX technologies. This can cause temperatures and CPU activity to exceed typical levels.
For stability, I stick with Asus RealBench, as it tests real-world programs in standard abuse scenarios. I don’t focus on temperatures or stability separately—they’re different metrics.
Regarding temperatures, I run Prime95 with AVX disabled; it’s a full CPU load with minimal RAM usage, offering consistent performance.
Aida64, Occt, and Intel Extreme Burn vary their CPU/RAM demands, making it hard to pinpoint exact temperatures at any moment.
For memory testing, I use memtest86. Surviving 24 hours of error-free stress means it can handle much more.
I haven’t used Cinebench; it was mainly a benchmark tool, though C.20 is becoming a popular alternative to RealBench.
I believe you're correct. after adjusting the avx offset from auto to 2, the OCCT stress test completed successfully for 15 minutes without errors or crashes, unlike before when it crashed within 3 minutes prior to the changes. I plan to run another OCCT test in about +4 hours today and hope it passes smoothly. Thanks!
Crashed within 3 minutes when AVX was enabled in auto mode. After switching AVX to 2, I experienced no problems after 15 minutes of stress testing, though I plan to try again in 4 hours. Previous configurations passed AIDA64, realbench, and gaming tests for over 8 hours without any crashes. Regarding the OCCT 80°C default shutdown, I don't believe it exists—I've reached a max temperature of 86°C and the test ran smoothly without interruptions.
During the 5.2ghz 1.38v OCCT test, some cores reached +90c with the highest being 97c. The OCCT stress test ended automatically (I set it to 95c). When I tried 1.375v, the stress froze for 1-2 seconds. This occurred again when I returned to 5.1ghz 1.365v, with slight freezing during the stress test. Now I'm using 5ghz 1.35v, and performance has improved significantly, though millisecond freezes still happen occasionally. Is this typical or could it damage my CPU?