i5 750 @ 4.00GHz overheating mystery

SteQ

SteQ

SteQ

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Hello chaps

I bought an OC bundle last year and it has just started playing up. It is overheating like a monster and I don’t really know what could be causing it (I don’t know an awful lot about overclocking, that’s why I bought a pre-made bundle)

I thought that the H50 water cooler might have a bubble in it or something, but I was under the impression it was a sealed unit? Is there a way to tell?

Spec:
*OVERCLOCKED* Intel Core i5 750 2.66Ghz @ 4.00GHz / Gigabyte GA-P55-UD5 Intel P55 Motherboard / Corsair XMS3 4GB (2x2GB) PC3-12800C9 1600MHz DDR3 Bundle

Corsair Hydro H50-1 High-Performance CPU Watercooler

At stock it runs at:
50 idle
75 load

Overclocked:
65 idle
99 load

I naturally thought of you guys. I was wondering if you could give me some ideas?
 
Doesn't look good - 99c on load isn't a great place to be. 75c at stock loaded isn't looking good either.

Maybe check that the block is seated properly on the CPU, and all leads are connected to where they should be. I don't have a H50 myself, but am sure others who do will be along shortly to advise.

Perhaps contact OCUK as well as there may be an issue with the cooler.

What are you using to measure the temps?

All the best,

Rich
 
Maybe the pump isnt pumping and is faulty. Did it suddenly overheat like this or is this close to how the temps were when you first got it?

Is the pump attached to a motherboard fan header or directly to the PSU?
 
I'm using an i5 750 @ 4ghz with a H50 and dont see anything like the temps you are getting buddy.

Few things to check:

> Is the CPU block seated properly?
> Is the pump working?
> Have you applied any Thermal Paste yourself? If so, what method and how much was used?
> Whats the CPU voltage being used in your mobo's BIOS?
 
Hello! Thanks for the replies.

I am using coretemp to measure the temps and I was getting 40-60 degrees when i first got the bundle. It seems to be quite a recent problem, i have not had any issues with it before.

Strangely, it only seems to have started playing up since I got Dragon age. This must be a coincidence though surely.

The pump is connected to the motherboard, and not directly into the PSU. It sounds like it is on and i can feel the vibration of the pump working if i touch it. I can hear occasional bubbling when it starts to get hot, is that normal?

I removed the thermal paste that the H50 came with and applied some artic silver myself. A pea sized amount and evened it out with a lint free cloth.

When I get home i will reseat the cooler and see if that helps.

Cheers!
 
Not necessarily, Dragon age tends to cane the cpu if I remember correctly, its a more "run the numbers in the background" kind of game to calculate hits and things so its doing a lot of calculations to determine hits, damage, etc, etc, that generally makes for a much higher cpu usage game than your average COD type game so could be that you've just not loaded it that much before.

An obvious question would be, are all the fans in the PC definately working, has the fan on the radiator stopped working, or has the motherboard had a reset, lost some of its settings and something like fan control is altering the pump/fan speed on the cooler?

I don't know much about the H50 but wondered if the pump was voltage controlled and turned up and down, maybe its always been at full before but a new setting has got the pump running at a lower speed.

It could just have developed a fault, either way i'd definately try and reseat it, shake it around a bit so if there is an air bubble hopefully it will settle at a less critical point.

Have you checked the cpu voltage reading in software or in bios hardware monitor section.
 
I've always found that 'pea size' in thermal paste is far too much.

I'd go for about half that size and don't smooth it out yourself, let the pressure from the CPU block spread it as you seat it into place.

Also remember to report back what your CPU voltage is in the bios buddy. ;)
 
Found the problem!

Looks like i plugged the pump into the wrong fan power socket when I cable managed my case a couple of months ago, so it must not have been getting enough juice to run properly. I also took the heatsink off redid the thermal paste as it was in a bit of a state.

Its running a lot cooler now. 45 idle and 60 on load.

Cheers for your help chaps!
:D
 
Interesting reading, spreading the thermal paste in a vertical line is a new one for me, i will have to remember not to take things for granted. Especially the precautions :P

"Arctic Silver Thermal Compound Precautions:
1) Don't put it in your mouth.
2) Keep away from children or where children can get a hold of it.
3) Keep it away from pets"
 
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