Question I910900K Thermal Throttle at beginning of stress test

Aug 2, 2020
8
0
10
0
Hi guys, Question. Running a stress test my 10900k thermal throttles at 100% usage , Later in the test at 100% usage its more around 50c with no issues. Any ideas?
 

mdd1963

Champion
Different motherboards have different usage/length of turbo scenarios (which can be altered/overridden in BIOS or Intel's XTU app) that greatly affect this...

'Stock' defacto Intel behavior is for the very high turbo clocks (~4.6 GHz-4.7 GHz on all cores?) to have a duration of but 30 seconds, then settle down to lower clock speeds across all cores to meet average TDP values...

Perhaps, due to cooling solution and/or core voltage, your CPU is nearing 100C during this 30 sec period, but, once clock speeds are reduced a few hundred MHz, the temps fare better...

What is the mainboard, and cooling solution....

And what clock speeds are shown in HWMonitor during, say a 10 min run of CPU-Z/bench/CPU stress CPU? (Note first 30 sec of run, then last several minutes)
 
Reactions: CompuTronix
Aug 2, 2020
8
0
10
0
Different motherboards have different usage/length of turbo scenarios (which can be altered/overridden in BIOS or Intel's XTU app) that greatly affect this...

'Stock' defacto Intel behavior is for the very high turbo clocks (~4.6 GHz-4.7 GHz on all cores?) to have a duration of but 30 seconds, then settle down to lower clock speeds across all cores to meet average TDP values...

Perhaps, due to cooling solution and/or core voltage, your CPU is nearing 100C during this 30 sec period, but, once clock speeds are reduced a few hundred MHz, the temps fare better...

What is the mainboard, and cooling solution....

And what clock speeds are shown in HWMonitor during, say a 10 min run of CPU-Z/bench/CPU stress CPU? (Note first 30 sec of run, then last several minutes)
Thats exaclty what it seems like, i jave a 240mm aio working condition. Z490 gaming edge wifi mobo. It never happens during gaming and temp peek at 48-50c. Is it ok to run a stress test that long with it throttling like that. Its only maybe 5 sec than temps reduce.
 
Aug 2, 2020
8
0
10
0
during the first run after thermal throttle it does jump down a few ghz but than jumps right back to 4.9 with temps running fine until the end of benchmark.
 
Aug 2, 2020
8
0
10
0
I think i figured it out... turned off multi core enhancement.Temps are great now and im running overclocked at 5.1. No thermal throttle.
 

CompuTronix

Intel Master
Moderator
sager83,

On behalf of Tom's Moderator Team, welcome aboard!
... Running a stress test my 10900k thermal throttles at 100% usage , Later in the test at 100% usage its more around 50c with no issues ...
“Stress” tests vary widely and can be characterized into two categories; stability tests which are fluctuating workloads, and thermal tests which are steady workloads. Utilities that don't overload or underload your processor will give you a valid thermal baseline. Here’s a comparison of utilities grouped as thermal and stability tests according to % of TDP, averaged across six processor Generations at stock settings rounded to the nearest 5%:



Although these tests range from 70% to 130% TDP workload, Windows Task Manager interprets every test as 100% CPU Utilization, which is processor resource activity, not actual workload. Core temperatures respond directly to Power consumption (Watts), which is driven by workload. As you can see from the scale, Prime 95 Small FFT's with AVX imposes a brutal 130% workload, but with AVX disabled it's a steady-state 100% workload that's ideal for testing thermal performance.



Shown above from left to right: Prime95 Small FFTs (no AVX), Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.

Intel Extreme Tuning Utility is a fluctuating workload at about 80% TDP. AIDA64 has 4 CPU related stress test selections (CPU, FPU, Cache, Memory) which have 15 possible combinations that yield 15 different workloads and 15 different Core temperatures. The individual FPU test is about 115% TDP workload, the CPU/FPU combination is about 90%, all 4 tests combined is about 80% and the individual CPU test is only about 70%. All other AIDA64 test selections are fluctuating workloads which are suitable for stability testing.

For thermal testing, if you only use your rig for gaming or never run highly demanding workloads such as rendering or transcoding, then run CPU-Z > Bench > Stress CPU, which is a steady workload at about 80% that's more typical of games with the heaviest CPU workloads.

But as mdd1963 has already pointed out, not every AIO can handle a 10900K, so a 240 is not really adequate. The minimum is a 280 or 360, and preferably a custom loop.

Once again, welcome aboard!

CT :sol:
 

ASK THE COMMUNITY

TRENDING THREADS