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CPU temps goes up and down very fast

post #1 of 5
Thread Starter 
Hi,

I just finished my watercooling (RS360 rad) build and overclocked my CPU (i5-3750k) to 4.3ghz

Everything is stable but when I put the cpu at 100%, the temps goes to 50C pretty quickly (and stick there).
When I stop stressing the cpu, the temps goes back to 30C very fast.

It's a matter of 2-3seconds to get to 50C and 3-4seconds to get back to 30C.

I'm using CPUID to get temps.

Is it normal?
post #2 of 5
Not fluent in the water cooling arena, having said that, only going to 50 and staying and then it drops down to 30. I'd say you are ok. What are your temps when you stress it with Intel Burn Test? My oc'd fx4100 goes to 52 during IBT and then goes to 27 when idle.
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post #3 of 5
Thread Starter 
I'm only using BOINC to test my cpu (it put it to 100%).
I'll try IBT, didn't even know it exist smile.gif


EDIT:
Ran IBT, temps went to 60C very fast and dropped to 30C after very fast too.
Edited by nord666 - 7/1/12 at 11:25am
post #4 of 5
Perfectly normal for extremely fast temp changes. They will rise and fall in 1-2 seconds after a load starts or ends. It will jump 10-15C very quick and creep up slowly after that, on air at least. May not creep up with water. Anyway, it is normal.
post #5 of 5
This is perfectly normal tbh smile.gif
60¤? Beautiful smile.gif

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Gangrene Machine
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CPUMotherboardGraphicsRAM
i7 2600k - 4.8Ghz - 1.4v Asus Maximus V Formula 2x MSI GTX 680 SLI 4x4GB Corsair Dominator GT @2133 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex3 + Corsair Force 3 + 10 TB storage LG BD Rewriter EK Supreme HF - Acetal+Nickel EK FC680 GTX - Acetal+EN 
CoolingOSMonitorKeyboard
Watercool 420mm external + EK 240mm internal Windows 7 Ultimate x64 lg w2363d DAS Ultimate 
PowerCaseMouseMouse Pad
Silverstone ST1200-G NZXT Switch 810 With Pedestal Mod Steelseries Sensei Steelseries QcK XL Na'vi 
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