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Waterblock bending video card PCB?

post #1 of 35
Thread Starter 
I installed my EK FC770 GTX waterblock onto my video card yesterday, and while everything seemed fine initially I noticed today that it appears to be warping my PCB a little bit, and I'm worried that over time this could be a serious issue. As far as I can tell I assembled everything correctly. While applying the thermal pads, etc to my video card, I did notice that one of the VRM/Mofset modules (whatever the fairly tall square modules are) seemed to be raised a little higher than the others. While this seemed odd I assumed it was just how the chip was manufactured, but now I'm starting to suspect that it may be that particular module which is causing the PCB to warp around it.

Has anyone else encounter a similar issue? Is the card likely to stop working because of this or should I just leave it as is? Any possible solutions or help would be much appreciated!

post #2 of 35
That's not good at all, can you double check your graphics card circuit board? Posting a photo of it would be the best.
    
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post #3 of 35
Thread Starter 
Yes I will disassemble it now and upload a picture.
post #4 of 35
Good, looking forward to it.

For future reference here's a rule of thumb - never mount a block if you see a card warping like this. thumb.gif
    
CPUMotherboardGraphicsRAM
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post #5 of 35
Thread Starter 
Definitely - I didn't look at the card from that angle after mounting the block last night, or I would have stopped. When I looked today I immediately noticed that it was warping.

Here are the pictures of the card, from a couple different angles - as you can see one of the modules appears to be raised slightly.



I also took a picture of the waterblock so you can see where the module is making contact with the waterblock - it left a big indent in the thermal pad so I think that's what was causing the flexing.


Also - once I removed the waterblock the card returned to its normal shape. Thanks for all your help!
post #6 of 35
not good at all and that part is a choke and dose it work
the money pit
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the money pit
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post #7 of 35
I had it too with my cards, in the end i just didnt tighten the GPU block that much. Just before it started warping. I tightend all the other screws, just not the 4 connecting the GPU.
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post #8 of 35
Is the warping happening on the reference 770 cards?
post #9 of 35
Thread Starter 
Quote:
Originally Posted by 1337LutZ View Post

I had it too with my cards, in the end i just didnt tighten the GPU block that much. Just before it started warping. I tightend all the other screws, just not the 4 connecting the GPU.

Yeah it seems like I could do that as well. Have you had any issues with high temps? My concern is that if I don't tighten the GPU block enough it won't make good contact with the waterblock and will overheat...
Quote:
Originally Posted by kimoswabi View Post

Is the warping happening on the reference 770 cards?

This is a reference 770 card. If you mean with the stock cooler on, I don't believe there is any warping, but I will look at my other card today and see if I notice any similar warping with the stock cooler.
post #10 of 35
This remind me of the 7970 story with one of the capacitors being higher than the other.
EK had to rework their 7970 blocks (the older style, not the csq one) to include this


Maybe some manufacturer are changing some components on their cards again ?
Would be nice to have someone else with a 770 reference design to see.
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