Watercooling for just 2 GPUs (7970 Matrix)

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I currently have two 7970 Asus Matrix Platinums in a Corsair Carbide 540 on a Z87 Asus Hero motherboard.

The two cards are very close together on this board due to the Asus 3 slot design. This results in the top card getting seriously hot (high 90's seen) under load. The bottom card stays relatively cool under load and I have yet to see it break 70 degrees.

I'm considering taking the two cards under water and would like to do this with a GPU only loop as I already have a H100i cooling my 4770K.

I've never done any watercooling before, so before I make a decision I would really appreciate some suggestions on how best to approach this. Also, I don't believe OcUK currently sells a VGA block which would fit these cards.

My case currently generates too much noise for my liking and I am thinking of using this as an opportunity to reduce noise levels, so suggestions around as quiet a loop as possible would be great.

Thanks.
 
tbh if you're going to put the 2 gpus under water you may as well do the cpu
if you go to the EK website there is a configuration tool that should help you find teh right gpu waterblock
 
I am willing to take the whole thing under water.

The water block I would need is EK-FC R9-280X Matrix - Acetal+Nickel which OcUK don't currently stock.

Any suggestions on a quiet setup that would be relatively easy to install in a Corsair 540?
 
On the EK configurator, the card is listed twice. Perhaps there are two revisions? It looks like "EK-FC R9-280X Matrix - Acetal+Nickel" will fit both revisions in any case.

Ideally you want 360 worth of rad space - 120 per component, plus 120. In your chassis, do you have space for a 240 rad in the front and a rear 120? Fans such as gentle typhoons or corsair SP120s would be ideal - especially if you have a controller.

Then you will want a pump and res, these can be either mounted internally or in a spare optical bay (or two). Personal preference again, but with two full GPU blocks you may want to consider getting something D5-based now, so as to leave you head room if you do decide to add another component down the line.

Finally, you'll need the fittings, liquid and tubing - these are again all personal preference, but make sure the fittings match the tubing. Compressions are generally a safer bet but more expensive.
 
Looks like you can fit a 360 in the front so that should be enough for the graphics cards, if you added 240 in place of the h100i you could do the CPU too and have some left over.

That should make for a pretty quiet loop I would've thought!
 
Well if you look at the project log thread and inside of you case thread there should be a whole slew of ideas for you to have a look at. If it's your first go at water cooling I'd wait on your gpu blocks to come out and do some research into what your loop will need.
good radiator/s, good fans, a resevoir and pump, then it's tubing size and the fittings.
General rule of thumb is bigger rads means slower speed on fans which means quieter system.
 
Thanks for the help guys.

There is plenty of space in the case for the radiators. I could have a 360 at the front and a 240 up top if I wanted to bring the CPU in as well.

I need to read up some more. I believe certain types of pump are quieter than others?

Thanks
 
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