Scary cpu temperatures

[Tsivqdans96]

Hi i'm having some trouble with my brand new i7 4790k processor, i got a corsair h60 v2 liquid cooler and my processor has an idle temperature of around 43 degrees celsius and when i'm stress testing it: it goes up to 90-95 degrees.

What could cause this problem? is the stock cooling paste really bad, is there not enough contact between the cpu and the cooler or have the store just provided me with a bad copy?

[Interfectorem]

Are you overclocked? What's your ambient temperature? Make sure you mounted it correctly, and are you sure it came with paste pre-applied?

[Tro]

How's the general airflow? Maybe try replacing cooling paste with something better. 

[Johannes_Lazor]

My amd a6 6400k goes up to 90-97 degrees C, But i dont care much about my cpu.

A Intel CPU should not go up to those temps.

If you are testing it with Prime95 it is not weird, it is Really heavy for the CPU.

[Tsivqdans96]

It's not overclocked at all and i stays at around 40 degrees when i'm not even playing any games. it should be mounted correctly since i did exactly like the instruction manual said and the water block did have cooling paste pre-applied out of the box.

[Tsivqdans96]

Could it be that HWMonitor is showing false temperatures?

[nj4ck]

Are you at stock clock? If so, try reseating the block and changing the thermal paste. Also make sure you have enough airflow and that your fans aren't runnign at too low RPMs.

 

oh, and try different software, realtemp or afterburner should do.

Edited September 4, 2014 by nj4ck

[Sklo]

cooling paste pre-applied out of the box.

and here is your problem

[Tsivqdans96]

Ahh so the stock paste is useless?

[Sklo]

just get some cooling paste of a tech store, replace it and you should be fine. There should be plenty of vids showing how to do it.

Just go to one of linus build guids.

[MEC-777]

Hi i'm having some trouble with my brand new i7 4790k processor, i got a corsair h60 v2 liquid cooler and my processor has an idle temperature of around 43 degrees celsius and when i'm stress testing it: it goes up to 90-95 degrees.

What could cause this problem? is the stock cooling paste really bad, is there not enough contact between the cpu and the cooler or have the store just provided me with a bad copy?

Hey, I'm using the same AIO cooler on an i5-4570 and have never seen temps anywhere near that high, even after running Prime95 for 10-15mins. 

 

Couple things to check: 

 

-Make sure the pump is running at 100% full 12v constant. If it's running slower than that, the water flow rate isn't sufficient. So if you have it hooked up to one fo the motherboard fan headers, go into the UEFI/BIOS and make sure that fan header is at "full speed". 

 

-Make sure the water block is mounted correctly and that the back plate is installed correctly. The block needs to sit completely flush with the CPU. Look on your motherboard around the CPU socket and see if there is a small bank of caps right next tot he socket. I know when I installed my H60 I had to have the water block positioned with the hoses next to the RAM or the board I/O. Because of those caps right next to the block, if I installed the block with the hoses to the top or bottom, the edge of the block would rest on those caps and it's just enough that the block will not make proper contact with the CPU. The caps I'm referring to are circled in the image below:

 

-The last thing to check is that the fan on the rad is working properly. 

[MEC-777]

and here is your problem

 

Ahh so the stock paste is useless?

 

No, it's not useless. It should work just fine with the pre-applied paste. I didn't use it, personally - I wiped it off and used arctic silver TIM, but really, if you installed the block and it is making proper contact, you should not be seeing temps that high. 

 

Corsair would not include pre-applied paste if it was useless. 

 

Check the orientation of your water block on the CPU and make sure it's not sitting on those caps like I showed in my previous post. I bet that's what's going on here because I almost made that mistake when I installed it in my own system. If I hadn't looked at the board at eye level to see if the block was totally flush with the CPU, I wouldn't have noticed it wasn't on properly.

 

The bottom of the waterblock is rectangular shaped and if you look at the pic I posted, in order to clear those caps, it has to be installed a certain way - with the hoses toward the RAM DIMMS or I/O side only.

[Tsivqdans96]

I removed the stock paste and applied some zalman cooling grease instead and i also changed the speed of the radiator fan and the cpu fan (the water block pump) to turbo but the temperatures are still the same.

What is going on??

[Tsivqdans96]

I have now changed the fan orientation so that all fans except the one on the radiator is sucking air into the chassi so that the radiator gets maximum air flow through it, still the cpu is running at 43 degrees ambient.

[MEC-777]

I removed the stock paste and applied some zalman cooling grease instead and i also changed the speed of the radiator fan and the cpu fan (the water block pump) to turbo but the temperatures are still the same.

What is going on??

 

 

I have now changed the fan orientation so that all fans except the one on the radiator is sucking air into the chassi so that the radiator gets maximum air flow through it, still the cpu is running at 43 degrees ambient.

 

Did you check the orientation of the waterblock on the CPU, like I suggested? 

 

What did the thermal paste look like that was on the block? Was it spread evenly over the whole die or only squished on one side/area?

 

The pump needs to run at full speed, but the rad fan does not. You can let the rad fan run off the CPU_fan header and leave that fan speed profile as standard (so it ramps up the fan speed as necessary). Run the pump off one of the SYS_fan or CASE_fan headers on the motherboard and set it to full speed.

 

What is the ambient temp in the room? You should see 30 degrees or less at idle if your room temps is 25 degrees or less.

[Tsivqdans96]

The problem turned out to be a factory fault with the cpu, with the stock fan mounted it ran at 88 degrees on ambient.

And yes i checked everything that was suggested before.

[BaSkA]

You're not alone my friend.

 

http://linustechtips.com/main/topic/205369-i7-4790k-highinsane-temps-help-please/?hl=insane+temps and 

 

There is something wrong with one lot of 4790k. I believe you should RMA if you can but, I don't know, maybe you're doing something wrong, even though I believe it's the chip's fault.

[Tsivqdans96]

It's no problem, the store gave me a 2 year warranty and i also kept the receipt, going to the store tomorrow to replace it.

[MEC-777]

The problem turned out to be a factory fault with the cpu, with the stock fan mounted it ran at 88 degrees on ambient.

And yes i checked everything that was suggested before.

 

You're not alone my friend.

 

http://linustechtips.com/main/topic/205369-i7-4790k-highinsane-temps-help-please/?hl=insane+temps and 

 

There is something wrong with one lot of 4790k. I believe you should RMA if you can but, I don't know, maybe you're doing something wrong, even though I believe it's the chip's fault.

 

It's no problem, the store gave me a 2 year warranty and i also kept the receipt, going to the store tomorrow to replace it.

 

Interesting... To be honest, I wouldn't have thought it could be the CPU itself. Learn something new every day.

 

Also, you never mentioned it ran really hot with the stock heatsink/fan before - that info would have been very useful in trying to diagnose earlier...

[Tsivqdans96]

Well i didn't try the stock fan until i had tried all the other solutions but i will definately do that the next time if something doesn't work properly.

[winningsince1337]

Well i didn't try the stock fan until i had tried all the other solutions but i will definately do that the next time if something doesn't work properly.

 

Interesting, I haven't heard much of bad Intel CPU's being sold. And this is why AMD needs to become competitive in the CPU market again so Intel will have to kick it up a notch.

[BaSkA]

Interesting, I haven't heard much of bad Intel CPU's being sold. And this is why AMD needs to become competitive in the CPU market again so Intel will have to kick it up a notch.

 

Exactly. Totally agree with you.

 

Yeah, there are some bad 4790k out there... if this is still happening often in the near future, I'll get a 4690k just to avoid this kind of trouble.

[foamygopher]

and here is your problem

Corsairs preapplied TIM is just fine.

[Tsivqdans96]

I have now changed the processor to a new one but i still see the same kind of temperatures as before. Is this how the cooler should be mounted? i have ran out of options. http://imgur.com/ugbid6k,FK2pcTs#1

[MEC-777]

I have now changed the processor to a new one but i still see the same kind of temperatures as before. Is this how the cooler should be mounted? i have ran out of options. http://imgur.com/ugbid6k,FK2pcTs#1

Yes, that is how it should be mounted (with the hoses on the block right next to the RAM). 

 

Do you know if the pump is in fact running? Sometimes if you listen carefully when the pump starts on boot up you'll hear it for a split second. Or if you touch the block, you might be able to feel it running (though they do run very smooth).

 

I wonder if it's possible you got another bad CPU...? (just thinking out loud)