I7 4790K overheating?

Andy6602

Reputable
Mar 12, 2017
8
0
4,510
Hello,
my PC is overheating and reaching 99c in just less than 3 minutes, i'm not really sure what's the problem, i've tried re-applying the thermal paste and it's still overheating. I'm using stock cooler, should i get better one? i just can't really imagine having a bad cooler would make it go up to 99c, I'm using i7 4790k and i'm not overclocking by the way.

i actually had an accident a while ago (around 6 monhs ago) and i lost power in my house while using the pc, after the power came back my pc was overheating a bit (70c on idle) but it fixed itself in a couple weeks and it was back to normal to being 30c on idle, could that accident be related to this? could losing power actually badly damage my cpu?

on a slightly different note, i was already planning on buying a new cooler and after doing a bit of research i found out most people were reccomending the Cooler Master Hyper T4 for the 4790k, is it still good?
 

Andy6602

Reputable
Mar 12, 2017
8
0
4,510


i just checked and all the cables and pins are plugged in correctly and it's still overheating
 

Andy6602

Reputable
Mar 12, 2017
8
0
4,510



i'm not really very good with computers so i'd rather not Delid it, i'll try disabling turbo tomorrow and see how it goes, i'd still prefer to fix directly the problem though
 


does the fan on the cooler run ?
 

lodders

Admirable


An i7 is a very powerful chip, and most applications do not use its full power...
For normal browsing, copying files, editing photos, viewing videos etc, your CPU should be idling at 10% power and fairly low temperatures.
If you play games, I would expect your CPU to run at 50-70% power, and to get hotter, maybe 75°C, this is hot, but still OK.
If you tried editing and encoding a video or rendering 3D animation, your CPU would go to 100% power and I would expect your CPU to heat up rapidly. Full power for a couple of seconds with the stock cooler is OK, but much longer would take you to 100°C, which is bad.
If you are not getting this performance from the stock cooler, then either the CPU is damaged internally, or the cooler is not correctly fitted... Best way to check cooler fitment is to look at the back of the motherboard.

For any PC, a bigger cooler will make your CPU run at lower temperatures. You can easily drop temperatures from 70° to 50° with a good aftermarket cooler. This would allow you to run your CPU at full power, or even overclock it. The more you spend, the more you can overclock.
 

Andy6602

Reputable
Mar 12, 2017
8
0
4,510

Yes, i can't say it's running crazy fast but it's definitely going faster when it's at 99c compared to when its on 30c



if my CPU is damaged internally does that mean i have to completely replace it?
 

lodders

Admirable


As a last resort, you could try de-lidding it as suggested earlier. Make really really sure it is not a cooler problem before you try this.....