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GPU's Running Super Hot

post #1 of 12
Thread Starter 
I've just added 2 MCW82 to cool 2 7870's to my loop, i also added a XSPC RX240 raditor (the pump is a Swiftech MCP35X, and i have a XSPC RX360 already in the loop with a XSPC RayStorm CPU WaterBlock).

The order of my loop goes like this.

Pump -> XSPC RX240 -> MCW82 -> MCW82 -> XSPC RX360 _> Rasystorm CPU.

My CPU temps are around 30 degrees c, going up to about 50 under load. that's stayed consistent since putting the GPU blocks in. My problem is that anytime i put any load on the GPU (playing Battlefield 3 for instance) Afterburner is reporting my GPU temps very quickly hitting 100 degrees c, then it crashes.

Afterburner tells me both cards hit around the same temp pretty quickly, which another thread indicated that it was a problem with badly fitted GPU blocks (i refitted them just in case), and it seemed that the problem could be caused by an air bubble, maybe in one of the rads?

What do you think?
post #2 of 12
Yeah if you verified the seat of the block on the gpu core I would say that its probably something to do with air in the loop. Thats still insanely high. Double check everything you possibly can. If you can, pick up your case and give it a good shake will the pumps running to loosen up some air bubbles.

With those insane temps it sounds like theres hardly any water getting to them at all. Pics of your setup might help.
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post #3 of 12
Thread Starter 


Hope this helps.
post #4 of 12
My friend was having issues with his graphics cards shutting down like that, but I think his problem was he didnt have a strong enough power supply and his cards were bad.

Sure either of those things arent the case?
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post #5 of 12
Hmm. Im not sure how those universal blocks work but make sure that you are using the correct inlet and outlet for them. It should clarify in the directions hopefully. Also make sure there are no kinks in the hose restricting flow. With the CPU temps being okay it makes me think that the problem is limited to the GPU blocks themselves. Heres a similar setup:

http://www.overclock.net/t/1209048/official-nzxt-switch-810-thread/4260_20#post_17377737
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post #6 of 12
Just to be sure, you are cooling the VRMs and memory on the GPUs as well, right?
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post #7 of 12


How did they run on air? Did you seat the blocks correctly?
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post #8 of 12
Thread Starter 
First I want to thank everyone for their input, secondly I want to say I've fixed the problem, the root cause is that I'm an idiot.

Hammer said double check everything you can - I listened to that, drained the loop, took the blocks off, cleaned the blocks, applied new thermal paste and suddenly realized I hadn't taken the plastic protective wrapping off the bottom of the blocks. Took that off, put thermal paste on, put everything back together GPU max 32 degrees c while playing BF3.

Can't rememeber how many times i've taken off that plastic film with other builds, and yet forgot with both blocks this time.

Like I said I'm an idiot smile.gif
post #9 of 12
Quote:
Originally Posted by ryfoo View Post

First I want to thank everyone for their input, secondly I want to say I've fixed the problem, the root cause is that I'm an idiot.
Hammer said double check everything you can - I listened to that, drained the loop, took the blocks off, cleaned the blocks, applied new thermal paste and suddenly realized I hadn't taken the plastic protective wrapping off the bottom of the blocks. Took that off, put thermal paste on, put everything back together GPU max 32 degrees c while playing BF3.
Can't rememeber how many times i've taken off that plastic film with other builds, and yet forgot with both blocks this time.
Like I said I'm an idiot smile.gif

We've all been there brother. Thanks for reporting back. Just glad you got it working. Awesome temps btw smile.gif Enjoy
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post #10 of 12
Quote:
Originally Posted by ryfoo View Post

I've just added 2 MCW82 to cool 2 7870's to my loop, i also added a XSPC RX240 raditor (the pump is a Swiftech MCP35X, and i have a XSPC RX360 already in the loop with a XSPC RayStorm CPU WaterBlock).
The order of my loop goes like this.
Pump -> XSPC RX240 -> MCW82 -> MCW82 -> XSPC RX360 _> Rasystorm CPU.
My CPU temps are around 30 degrees c, going up to about 50 under load. that's stayed consistent since putting the GPU blocks in. My problem is that anytime i put any load on the GPU (playing Battlefield 3 for instance) Afterburner is reporting my GPU temps very quickly hitting 100 degrees c, then it crashes.
Afterburner tells me both cards hit around the same temp pretty quickly, which another thread indicated that it was a problem with badly fitted GPU blocks (i refitted them just in case), and it seemed that the problem could be caused by an air bubble, maybe in one of the rads?
What do you think?


Text book no contact on the die.

7870 has a recessed die. Did you get the 7970 specific mcw82? If not you need to get the ek shim, or go make a copper shim yourself.


http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_971_1018_1038&products_id=33466
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