Can my watercooling loop take another GTX 780?

druppes

Honorable
Sep 7, 2014
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Hi,

I am wondering if my water-cooling loop would be able to take another GTX 780 underwater.

What tests can I do with the current setup to check how efficiently the loop is running etc? And how much extra cooling it may be able to supply me.

I am able to monitor the water temps but not the flow rate. however from what i can see the flow rates are pretty good as the res would cyclone like mad without the foam thing in.

Current setup is;

1 X GTX 780
1 X i7 4790k @ 4.7Ghz

1x 120mm rad (med fpi)
1x 200mm rad (low fpi)
1x 240mm rad (med fpi)

Noctua-NF-F12PWM x3
180mm fan @1300 rpm x1

10mm x 13mm tubing.
Distalled water with silver kill coil

DDC 3.2 pump

1 meter of tubing only.

There inst really any room to add another radiator however I could easily swap the 240mm for a 280mm it is just a bit of a waste of money as i would also need two new fans and obviously a new rad. However if it would make all the difference I wouldn't mind doing it,

I dont want to add another GPU if its going to effect my CPU allot. my GPU temps are very low so even if they doubled it would be fine.



From the research i have done my psu can take it fine but some prefer a little more headroom. Its an 850 gold cert PSU and my system would technically need 645W on 100% load with a generous amount of peripherals and taking into account everything from lighting to water pumps,

with 25% capacitor aging and 100% load (either of which is unlikely in the next few years) I would need 822W. its only when i get above 33% capacitor aging that my power supple would technically fail at full load. At which point I could lower my overclock until I replace my psu.

Thanks!
 

druppes

Honorable
Sep 7, 2014
88
1
10,645
Thanks, that makes me feel a bit better.

There are alot of threads with people saying if you go SLI 780s you need 1000W+ and some even say 1200W.

But yeah I thought the amount of radiators should be enough, my ambient temp is arround 25 and I idle at 22-28 and full load is 36. So I guess that might increase to a max of 45.

My cpu temps are 65 full load so I guess I have room there as well. However in actual games cpu temps are closer to 50.

 

druppes

Honorable
Sep 7, 2014
88
1
10,645
Cool,

My alternative, is to send the 780 back and buy a titan. weirdly the 780 didnt have any void if removed stripes, this option would £50 more expensive however, my waterblock works on both Gpus. Would you rather 2 780s or 1 titan?