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Radiators for 2x GPUs & 1 CPU

post #1 of 13
Thread Starter 
Hello OCN, my next build I want to go full custom loop but I was wondering this: How many radiators do you need for 2 GPU blocks and 1 CPU block. I was personally thinking of going with a loop that is like this: Res -> Pump -> 360 Top Radiator --> CPU Block -> GPU 1 -> GPU 2 -> 240 Front Radiator. ( Will build the system in a NZXT Switch 810.) Will this be enough? If this is enough I don't get why people buy 900D's and put 2 480's 1 360 and 1 240 in it. If a 360 + 240 can do It, what are the benefits of having so many radiators?


Thanks a ton.
post #2 of 13
looks like more than enough for your average loop of such components.
post #3 of 13
The rule of thumb is 120mm rad for each block and have another 120mm rad for buffer. With your 4770k + 2x 780 lightning (I assume), 360 and 240 should do the job just fine. 1 of the benefits of having many radiator is to enable you to run your system whisper quiet. Assuming rad thickness is all the same, more rad means more surface to dissipate the heat out of you systems. However, I'm not able to tell you how many radiator you have until you hit diminishing return. And also, people usually will recommend thick rads with low density fins to thin with high density fins. Thin rad with high density fins requires higher rpm fans to push through and it will create more noise. Kinda defeat the purpose of having watercooling in the first place I would say (whisper quiet operation).
Edited by Mozz13 - 1/2/14 at 2:26am
post #4 of 13
1) Loop order doesnt matter, just keep it short and clean
2) Rule of thumb is 120mm per component, and then having at least a 120mm extra so, 2GPU +1CPU = 360mm minimum and 360mm + 120mm or 480mm is recommended.
3) More radiators = more surface area to dissipate heat on = fans dont have to run at a super high RPM
4) Some people have radiators on to be passively cooled = cooled with room air or case fans
5) For some people, having radiators on every possible inch on your case looks really really cool.
post #5 of 13
Thread Starter 
Thanks for the help guys wink.gif Been looking at this kit for some time, would this be good for my uses?

PrimoFlex Advanced LRT 7/16in. x 5/8in. Tubing (10ft pack) - Elegant White
XSPC Raystorm Extreme Universal CPU Watercooling Kit w/ EX360 Radiator/D5 Pump
XSPC EX240 2 x 120mm, Dual 120mm Low Profile Split Fin Copper Radiator - Black
Corsair Air Series SP120 High Performance Edition Twin Pack Fan x7 ( push / pull on the 240 rad)
XSPC 7/16" x 5/8" Compression Fitting with G1/4" Threads (Black Chrome Finish) x6 ( i get 6 with the cpu block already)
EK Full Cover GTX 780 Lightning Water Block x2 ( for 2 lightnings)


745$
post #6 of 13
Quote:
Originally Posted by Khrome View Post

Thanks for the help guys wink.gif Been looking at this kit for some time, would this be good for my uses?

PrimoFlex Advanced LRT 7/16in. x 5/8in. Tubing (10ft pack) - Elegant White
XSPC Raystorm Extreme Universal CPU Watercooling Kit w/ EX360 Radiator/D5 Pump
XSPC EX240 2 x 120mm, Dual 120mm Low Profile Split Fin Copper Radiator - Black
Corsair Air Series SP120 High Performance Edition Twin Pack Fan x7 ( push / pull on the 240 rad)
XSPC 7/16" x 5/8" Compression Fitting with G1/4" Threads (Black Chrome Finish) x6 ( i get 6 with the cpu block already)
EK Full Cover GTX 780 Lightning Water Block x2 ( for 2 lightnings)


745$

Yes that works.

Make sure to get a biocide or killcoil while youre at it too. <$10 ish i believe. will last you for a long time.
post #7 of 13
Thread Starter 
Quote:
Make sure to get a biocide or killcoil while youre at it too. <$10 ish i believe. will last you for a long time.

Would you go with just distilled water + a chunk of silver ( heard it kills all the bacteria?) or would you go with some water that is made specifiaclly for custom water cooling loops?
post #8 of 13
Quote:
Originally Posted by Khrome View Post

Would you go with just distilled water + a chunk of silver ( heard it kills all the bacteria?) or would you go with some water that is made specifiaclly for custom water cooling loops?

The special water is just distilled water + additives. I guess you can say maybe its "purer" distilled water? I dont know what technologies companies have to push their coolant over their competition; but its pretty much the same just priced a lot more than what its worth.

Distilled water from local grocery store + kill coil or biocide. I use biocide because i just use distilled and no coolant and i dont want to see a random piece of metal in my loop.
post #9 of 13
Thread Starter 
Quote:
Originally Posted by Aesthethc View Post

The special water is just distilled water + additives. I guess you can say maybe its "purer" distilled water? I dont know what technologies companies have to push their coolant over their competition; but its pretty much the same just priced a lot more than what its worth.

Distilled water from local grocery store + kill coil or biocide. I use biocide because i just use distilled and no coolant and i dont want to see a random piece of metal in my loop.

Im thinking of using the NZXT Switch 810, but maybe , maybe, could I possibly do it in my Corsair 350D? it has 2x 240 rad mounts. I could to 240mm top and a 240 mm push pull front and have my res + pump in my 5.25 inch bays. Do you think this is possible?

I think it might be possible judging from this build logg : http://www.overclock.net/g/i/1548260/a/958392/build-log-zebra-ii-watercooled-350d-with-gtx780-sli/sort/display_order/
Edited by Khrome - 1/2/14 at 2:58am
post #10 of 13
Thread Starter 
Oh and can someone tell me if I need any kind of SLI fitting?
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