Sudden jump in temperatures when Prime95 ends

B3NDY

Reputable
Apr 18, 2014
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Right now I am using an AMD 8350 cooled by a H100i which stays nice and cool at around 39-40C when running prime for a good 15 minutes at stock clock and voltage, even when the fans are in their "quiet" mode in corsair links which is great!.

What I don't understand is why when I stop Prime95 two odd things happen, the temperature for the 8350 in corsair links jumps very quickly to almost 50C and also which this happens temperatures in HWmonitor and CoreTemp just go down straight away without any jumps before hand.

So basically what happens is when idling corsair links tells me my CPU is about 35C and my motherboard temps (which i think are my VRM) are about the same while HWmonitor and CoreTemp tell me the CPU is at 20C and the motherboard temps are at about the 35C. This means that the temps for the CPU are different but the motherboard temps are the same.

Next what happens is as soon as I start up Prime95 the CPU temps drop down to about 25C in corsair links to meet the CPU temps that HWmonitor and CoreTemp show and then for the rest of the test corsair links and HWmonitor both show the same temps for both the CPU and the motherboard.

Now the final thing that happens is that when i stop Prime95 running the CPU temp jumps up to about 45-50C while the HWMonitor and CoreTemp temperatures just drop back down to about 20C over about 5 seconds. I don't understand this because surely each program is reading the same temps.

The only thing I can think of is because HWmonitor has been know to show bad result of CPU idle temps while the motherboard temps are still accurate Corsair Links has taken this on so when the load low ,ie.after I stop Prime, it puts the CPU temps up closer to the motherboard temps to try and reduce the inaccuracy of the idle CPU temps. That's my thought, any other ideas?
 
My thought is that Corsair link may not update properly while you'r running Prime95 which tries to utilize every CPU at max. In Task Manager, try to increase the scheduling priority for Corsair Link to highest and see if then the temp readings increase while running Prime95.