Stupidly High CPU Temps

I'll go through all my pics and find the most relevant ones but the link in my sig has my build log with 100s
 
Here are the 2 most relevant pictures:
pFo2bye.jpg

8Osxjcb.jpg


Currently all the temp testing is being done without the side panels on to ensure maximum airflow.
 
I think that's your problem... The GTX 780 is heating the water up too much due to the high clocks and voltage and it's having an affect on the CPU temps.

You said the water in your loop is only 25c but I bet that the water coming from your GTX 780 block is a lot higher then that.

I would reverse the loop order.
 
I highly doubt it is the GPU as when I do all my testing the GPU is idling at desktop. It will sit around 25C when idling and only about 1-2C hotter than the water. When I stress the GPU as well the water will heat up by 15-20C and so will the CPU meaning that under load it reaches the dangerous temps of 95C+. I will move the water temp monitor to between the GPU and CPU so I can directly measure the temp of the water going in.

Rearranging the loop will be a difficult procedure and I am fairly sure that loop order doesn't really matter more than a couple of degrees.
 
So when you stress test the GPU the water temp increases by 15-20c?

So from my understanding the water at idle enters your GTX 780 water block at around 25c? And then during GPU stress testing it increases to 40-45c? So during high GPU loads the water is exiting your GPU at 40-45c and then entering your 3770k block?

That to me is your problem right there... You need to change your loop around.
 
Loop order has been proven to not make a significant difference.
The radiator does not 'cool' the liquid in the loop. It radiates heat from the cooling system as a whole.

Radiators feeling cool to the touch may be an indicator, but since GPU temperatures are as expected it doesn't appear to be some kind of airlock or flow issue. Again the fact that the 2550k temperatures are very high would indicate an issue with the block itself.

I would try remounting the block at 90 degrees to what you have it now (ports side by side) and make sure the screws are tightened properly (corner to corner method). When you take off the block to remount it, check the paste spread on the IHS since it might show something about the mount pressure.

Normally with the Ivy I would just say de-lid, but I wouldn't have thought the temperatures should be getting above 60C or so with the soldered Sandy, and that's with the GFX being stressed too.
 
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So the weird just got weirder. Or simpler.

I did literally nothing except put the 2550K back in (I didn't even bother with fresh thermal paste) and the temps no longer reach north of 50C at stock and when I pushed 1.4v through it, it did not go above 60C.

But the 3570K is still stupid hot. And I think I know why.

psK6wrUl.jpg


The CPU has been lapped. Poorly.
Or attacked by a gremlin.
Either way it doesn't look good and the temps still suck the big one.

I am going to do a temp test with an air cooler. This might not be fun.
 
Redid the tests with the 3570K making extra sure that the paste was spread well, the mounting pressure was high and that the water flowed over the dye.
Still super poop temps. 75C+ within minutes. Did a test a 1.3v and it shot to 95C+.

I don't know whether it is the more lapping or the crappy thermal transfer on ivy bridge but it is not good at all. I will contact the guy I bought it off as I was NOT told or shown anywhere that the CPU had been lapped.

But I am now much more happy with my 2550K temps and can now OC it again (even though I have no idea why the temps dropped).

So thanks a lot for all suggestions and now you can shout at me for buying a 2nd hand CPU (it would have been a steal w/o these issues)
 
Yeah I would tend to agree with you that the loop order is fine but it wouldn't hurt to try it in a different order then you know its definitely the cpu
 
A badly lapped one "could" cause this. It will not allow optimum contact as you guys know. Ideally quality lapping should produce a mirror finish effect. From the pic added looks like the previous owner lapped it with a combine harvester. Lol
 
But even with stock TIM my 3770k never hit 60ºC @ 4.5GHz 1.236v under water. Yeah it'd help to replace with CLU/CLP but I think there's something else having an effect here.
The lapping, whilst not the finest of jobs looks to be pretty even, dont these things just have a nickel coating? If the lapping was on the **** you'd be through in places...

OP how is the TIM spread looking after removing the block? Nice and even?

Also, have you been checking Vcore on CPUID or the likes or are you relying on what the BIOS says? It's not uncommon for the two to be way off, you maybe have a huge V bump under load giving you nuclear temps :)

Edit:Updated my temp data after a check in my de-lid thread
 
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BRIGGBOY81 said:
Yeah I would tend to agree with you that the loop order is fine but it wouldn't hurt to try it in a different order then you know its definitely the cpu
Click to expand...

Problem is that reversing the loop order will not be an easy task. Also the now good sandy temps indicate that the loop is functioning well and the GPU is literally doing nothing and sits at the same temp as the water.

McstylisT said:
A badly lapped one "could" cause this. It will not allow optimum contact as you guys know. Ideally quality lapping should produce a mirror finish effect. From the pic added looks like the previous owner lapped it with a combine harvester. Lol
Click to expand...

Patented Combine Harvester Lapping Technology. BRB suing Samsung.

NoNameNoNumber said:
But even with stock TIM my 3770k never hit 60ºC @ 4.5GHz 1.236v under water. Yeah it'd help to replace with CLU/CLP but I think there's something else having an effect here.
The lapping, whilst not the finest of jobs looks to be pretty even, dont these things just have a nickel coating? If the lapping was on the **** you'd be through in places...

OP how is the TIM spread looking after removing the block? Nice and even?

Also, have you been checking Vcore on CPUID or the likes or are you relying on what the BIOS says? It's not uncommon for the two to be way off, you maybe have a huge V bump under load giving you nuclear temps :)

Edit:Updated my temp data after a check in my de-lid thread
Click to expand...

I don't mean to brag but I am very proud of my TIM application. Even and thin coating with very little leakage
Z77 MPower keeps voltages in line very well. I set 1.2v in the bios and CPU-Z reports that under load they are 1.184 and sometimes flick to 1.192. I can get the multimeter out and check the V-check points if you are interested.

I have also seen your desire for a high end Z77 board. Have you considered the MPower - I trucking love mine.
 
Disco_P said:
I don't mean to brag but I am very proud of my TIM application. Even and thin coating with very little leakage
Z77 MPower keeps voltages in line very well. I set 1.2v in the bios and CPU-Z reports that under load they are 1.184 and sometimes flick to 1.192. I can get the multimeter out and check the V-check points if you are interested.

I have also seen your desire for a high end Z77 board. Have you considered the MPower - I trucking love mine.
Click to expand...

Not heard anyone brag about their TIM application before :p It's beginning to sound more like an issue with the chip... The voltage variation was just a query... We're clutching at straws here :)

I'd have liked an MPower but I've gone for an Asus Maximus V Extreme. Not sure but I don't think there is a better Z77 board on the market :D
 
I've just run AVX Enabled Linx and Prime95 on my De-lidded 3770k at 4.8Ghz with 1.298v

Linx maxed out at 74c at it's hottest point and Prime95 running blend maxed out at 66c

That's with an EK LTX block and a single 240mm radiator that's 60mm thick with 2x fans on push, it's also cooling a R290 too!

So these temps are really funky....
 
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