My CPU is hitting a max 88 celsius while stress testing, safe to overclock?

leksaloffe · Jul 12, 2018

^^^ Is it safe to overclock? max 88C Load 100%, normally 40-50 degrees

CPU is intel pentium g3258

clutchc · Jul 12, 2018

If that is your load temp now, no. Absolutely not. In fact, it would be wise to find out why the core temp (?) is so high and try to lower it. 72C is Intel's recommended max temp.

Barty1884 · Jul 12, 2018

What are you using to put the 100% load on the CPU? What cooler are you using?

88'C is definitely on the hot side of things, and I wouldn't be looking to OC from there.

IIRC, a G3258 won't throttle until you approach 100'C...... but sustained load temps >80'c (or >85'C, depending on who/where you ask), is not a good idea for long term use.

leksaloffe · Jul 12, 2018

clutchc :

How can I lower it?

leksaloffe · Jul 12, 2018

Barty1884 :

I'm using a coolermaster gx 650w bronze

clutchc · Jul 12, 2018

leksaloffe :

Give us an idea of the rest of the system. The case you're using, average room temp. The little 53W dual core should not get that warm at stock speeds. Unless the cooler is loose, the cooler fan isn't working (or is not up to speed), or the case has extremely poor air flow.

leksaloffe · Jul 12, 2018

clutchc :

I don't know what the case is, there isn't a name on it. The sides are full of little holes though. Average room temperature maybe 23-26 Celsius? The cooler shouldn't be loose either. The computer is really noisy as well!

clutchc · Jul 12, 2018

leksaloffe :

Shouldn't be, or isn't? Sometimes those pesky Intel push-pins don't get installed correctly or pop loose.
As to the case, I guess it is a pre-built system? Have you noticed the CPU usage when the system is idle? What is the idle temp?

leksaloffe · Jul 12, 2018

clutchc :

When I originally said normally its 40-50 degrees, it was the idle temp. When playing a game its not much more. And I checked the PC today and it didn't seem to be loose.

clutchc · Jul 12, 2018

40-50C tells me that even the idle is too warm. My Haswell dual core builds always idle in the low-mid 30Cs. I wonder if there is something running your CPU in the background you don't know about. Malware, virus, mining virus...
Check what the CPU usage is at idle.

leksaloffe · Jul 12, 2018

clutchc :

Its about 38-43C

clutchc · Jul 12, 2018

leksaloffe :

Well... that isn't 40-50C. But that is better. Still seems higher like something is using clock cycles. Check CPU usage at idle.

leksaloffe · Jul 12, 2018

clutchc :

leksaloffe :

Well... that isn't 40-50C. But that is better. Still seems higher like something is using clock cycles. Check CPU usage at idle.

Its using 2-4% according to task manager.

clutchc · Jul 12, 2018

It might be time to check the thermal paste, but it sure seems early to have to do that.
How fast is the cooler fan spinning at 100% CPU usage? Stock cooler?

leksaloffe · Jul 12, 2018

clutchc :

How do I check that? And my uncle actually built this PC, the cooler is a Coolermaster GX 650w Bronze if that helps you at all.

edit: Would 7000 RPM sound crazy? Didn't understand BIOS very well.

clutchc · Jul 13, 2018

The Coolermaster GX 650w Bronze isn't a cooler. That's a power supply.
You can't check fan speed at 100% CPU usage in BIOS. Do it in Windows. And yes, 7000 RPM is crazy fast.
To get your CPU to run at 100% usage, run something that maxes it out like a stress testing app. Intel Burn Test is one, Prime 95 is another. When they run, check fan RPM with something like HWmon

leksaloffe · Jul 13, 2018

clutchc :

Sorry I was doing research on coolers today, and it's just a small Intel stock cooler. I'm not home until Sunday, so I'll check the RPM then. Thank you for the replies!

leksaloffe · Jul 15, 2018

clutchc :

So I came back after being away for 2 days, now I stress tested it and it went up to 100C 58-65C idle? RPM was around 2900-3169

clutchc · Jul 15, 2018

leksaloffe :

The fan RPM tells me that the fan isn't the problem. The temp is way to high, tho. Should never get above mid 70Cs at 100% usage if the cooler is doing its job and you are in a normal 20C-26C environment. I would remove the stock cooler and either (1) clean/replace the TIM and properly remount the cooler, or (2) replace the stock cooler with an after-market cooler.

There is another less likely possibility. One core have become defective. Check that one core isn't way higher than the other.

As a final experiment, remove the side panel of the case and lay the case on its side. Run the stress test like that so any heat can escape the case when running. That should eliminate bad air flow inside the case as a problem.

leksaloffe · Jul 15, 2018

clutchc :

leksaloffe :

The fan RPM tells me that the fan isn't the problem. The temp is way to high, tho. Should never get above mid 70Cs at 100% usage if the cooler is doing its job and you are in a normal 20C-26C environment. I would remove the stock cooler and either (1) clean/replace the TIM and properly remount the cooler, or (2) replace the stock cooler with an after-market cooler.

There is another less likely possibility. One core have become defective. Check that one core isn't way higher than the other.

As a final experiment, remove the side panel of the case and lay the case on its side. Run the stress test like that so any heat can escape the case when running. That should eliminate bad air flow inside the case as a problem.

Experiment made no difference. 100C but the RPM was just a little lower. Been thinking of getting a Cryorig H7 and seeing if it would help at all. Also, cores are both just about the same temperature.

leksaloffe · Jul 22, 2018

Bought a new cooler and a case fan. Went to max 55C and after overclocking to 4.30GHz up to 70.

leksaloffe · Jul 22, 2018

Bought a new cooler and a case fan. Went to max 55C and after overclocking to 4.30GHz up to 70.

My CPU is hitting a max 88 celsius while stress testing, safe to overclock?

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