Possible to put GPU on water in 5,1 Mac Pro?

Redneck1089

macrumors 65816
Original poster
Jan 18, 2004
1,157
273
Does anyone know if it is possible to put a GPU, specifically the GTX 780 Ti Classified, on water in the Mac Pro?
 

slughead

macrumors 68040
Apr 28, 2004
3,105
234
What challenges would I be facing?
You'd have to have external power, for sure. Also, fitting the water cooler in the case would be a problem. There is that new ASUS 780Ti with the water cooling tube fittings built in. If you cut a couple holes in the case you could run it outside to your cooler.

You would be a bad ass though. :cool:
 

DanielCoffey

macrumors 65816
Nov 15, 2010
1,189
24
Edinburgh, UK
You can get PCIe expansion bay covers with ports in them for tubing so that gives you access to the outside of the case. Quick disconnects will deal with moving the case.

You can get external radiators of considerable size (see Phobya) but you would only need 120.2 (or 120.3 for preference) so a micro case with small PSU, pump (such as D5 vario) and a small tube reservoir and space for a couple of radiators is all you need.
 

Redneck1089

macrumors 65816
Original poster
Jan 18, 2004
1,157
273
You'd have to have external power, for sure. Also, fitting the water cooler in the case would be a problem. There is that new ASUS 780Ti with the water cooling tube fittings built in. If you cut a couple holes in the case you could run it outside to your cooler.

You would be a bad ass though. :cool:
Well I already have the eVGA GTX Ti Classified...so no Asus for me. I already have an external PSU powering the card which should also be powerful enough to handle the extra load of powering something else.

It's just a matter of whether I want to go through with it and how much I'd really gain from it.

I have already updated the BIOS of the card and used the EVbot to up its voltage...but I run into a dead end pretty quickly because any significant over clock hits the max temperature limit pretty quickly.

For awhile I had it +140 Mhz at 1.31825 volts. Assassin's Creed Black Flag and Metro 2033 Last Light handled it fine, except for hitting 90 degree C pretty quickly. I've ended up lowering the voltage to 1.22025 volts and a modest +50 Mhz over clock, and this keeps me below any extreme temperatures.

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You can get PCIe expansion bay covers with ports in them for tubing so that gives you access to the outside of the case. Quick disconnects will deal with moving the case.

You can get external radiators of considerable size (see Phobya) but you would only need 120.2 (or 120.3 for preference) so a micro case with small PSU, pump (such as D5 vario) and a small tube reservoir and space for a couple of radiators is all you need.
Thanks for the information. I will look into it.