how do i watercool my cpu and 2 gpus? - Overclock.net

ironcobra220 · 07-22-08

im using a coolermaster cosmos s and i want to fit it with watercooling to cool my cpu and 2 gpus.

ive got enough space for a 360cm radiator to screw in the top of my case but im not sure if this is enough to cool my gpus aswel.

i made some diagrams but i dont know if it would work well enough
heres my friends idea:

problem is the gpus wil be using warm liquid from the cpu im not sure if its safe.

i had an idea to use a "Y" splitter from the radiator so the gpus and cpu wil get the same tempature liquid running through, but it might loose pressure, heres the pic (doesnt look promising):

does anybody know how to cool the cpu and gpus a better way?
like would i need another pump or rad n stuff?
my current watercooling setup wil cost about £330 unless im missing some realy simple way to set this up..?

if you want to do a draw in the pic like i did heres the pic without the tubes n stuff:

http://img249.imageshack.us/img249/4...ngblankhv0.jpg

please respond!

thunder_2008 · 07-22-08

Sounds like you already have a good idea of what you want. I would say though that a 360 is a large radiator to put inside of any case, even a cooler master cosmos. Plus, no matter how good a job you do of putting it together, you may get leaks at some point and all that water on your board?

The in case reservoir is enough, the radiator is too much~!!!

You are going to add two gpus' to your loop with a cpu as well. Your going to get some very hot temps, this means that you would have all this hot radiated heat inside of your case.

Also, there's the added chance of splashes from the high pressure caused by ever higher temps within the case.

Now, taking it out of the case is another story that would be like a breath of fresh air to the radiator.

In closing the rad inside of case will also make your mb/chipset/etc. way hot...

porky · 07-22-08

um , I have the same case and the same setup m8......it will work fine....

ironcobra220 · 07-22-08

Quote:

Originally Posted by thunder_2008

In closing the rad inside of case will also make your mb/chipset/etc. way hot...

if i have the fans under the rad sucking up air i think it would just suck in hot air.. if i had the fans underneath blowing down and sucking air through the rad would this work?? it would cool the inside alot but would probably only suck in room tempature air to the rad, unless i put fans on top too? (i could do that with my case).

im stil thinking about the splitter idea, i think id need another pump for that or even a whole new circuit D:

also the water coming from my gpus, would that have transporting liquid up into the reseviour? on my last computer it lost pressure unless liquid was going directly down to the reseviour (twas a crap setup).

as im on a roll for asking questions... how would i make the liquid look like blood? most red coolent goes seethrough or pink, iwant mine to look blood powerd!

eRazorzEDGE · 07-22-08

lol, not sure about the blood powered water, but...

i do know that my cpu/gpu/nb/sb/2x vRegs/ram loop on 1 pump with 2 360 rads is great. all components average 30°C idle and after a few hours of gaming (and at load) CPU @ 41, gpu @ 36, ram @ 31, and mobo @ 32°C.

if u have the air sucking n2 ur case from the top, through the rad, the air will heat up as it passes the rad, n turn heating up the air n ur case. which doesn't hold well 4 air-cooled components n ur case. on the flip side, if u have the fans sucking air from inside ur case, expelling out the top through ur rad, u'll have higher "ambient" air temps running across ur rad and not doing as good of a job at cooling down the water. u'll probably just have 2 test it out and c what ur comfortable with.

as far as the splitter is concerned, make sure u neck down the 2 tubes coming off the single tube, otherwise the water will lose pressure and u can take a hit on cooling effectiveness. if u have a 1/2 inch tube, coming 2 a y, then reducing to 3/8's inch on each branch, then heading through ur components, then enlarging to 1/2 inch then back n2 a y and a 1/2 inch out.... i believe it will flow just the same (provided no other restrictions) as just one 1/2 inch line all the way through.

however, n ur case with just the cpu and gpu's, i would loop them in serial as ur gpu temps will still be ~20°C cooler than on air

DaCrusader · 07-22-08

go with the first one... splitting results in a loss of flow pressure and water tends to go down the less restictive path aka the CPU loop and your GFX cards will suffer

ironcobra220 · 07-24-08

would it be any help putting fans on both sides of the rad both blowing into the case? also once the water has looped through the cpu wont it pass warm water through the gpus?

Uber-L&B · 07-24-08

Quote:

Originally Posted by ironcobra220

if i have the fans under the rad sucking up air i think it would just suck in hot air.. if i had the fans underneath blowing down and sucking air through the rad would this work?? it would cool the inside alot but would probably only suck in room tempature air to the rad, unless i put fans on top too? (i could do that with my case).

im stil thinking about the splitter idea, i think id need another pump for that or even a whole new circuit D:

also the water coming from my gpus, would that have transporting liquid up into the reseviour? on my last computer it lost pressure unless liquid was going directly down to the reseviour (twas a crap setup).

as im on a roll for asking questions... how would i make the liquid look like blood? most red coolent goes seethrough or pink, iwant mine to look blood powerd!

Keep adding the DYE till its so thick UV has no affect on it

Also the setup looks fine imo

thunder_2008 · 07-24-08

Quote:

Originally Posted by ironcobra220

would it be any help putting fans on both sides of the rad both blowing into the case? also once the water has looped through the cpu wont it pass warm water through the gpus?

Side fan placement would help, though still not as effective as placement outside of case without side fans.

Yes, water would be to warm...but hot after cpu...specially if you are using an overclock and more still with a oc quad.

While it maybe be true that spliting lines in w/c loop slows pressure, it also allows fresh cool water for each component; and if you have a good regulated pump capable of increasing the gpm of flow and using 1/2 inch lines beginning then spliting to 1/4 and back to 1/2 for return you will not have slowing effect cooling of the system.

I have a really nice w/c system which actually gives you the option of automated flow which currently is set to around 45.15 liters per hour.

I have manually adjusted it to 50-60-70 liters per hour before, so you can increase the flow and pressure to your loop. Just you will need a good pump that is able to flow up to 150 - 600 l/h (39 - 158 gph).

Or at least 150 l/h.

Iron btw...your setup does look good

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how do i watercool my cpu and 2 gpus?

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