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A 360 Rad Enough For .....

post #1 of 20
Thread Starter 
Hi was wondering would a 360 radiator be enough to cool a i7 3930k CPU (Overclock between 4.2Ghz to 4.4Ghz) & a Nvidia GTX 690? (Which is the latest 4GB GPU from Nvidia)
If adding another radiator say another 240 keep my gpu and cpu even cooler under load I would go for it but if a 360 is enough and I won't see a big difference i'll just stick with one then.
post #2 of 20
Thread Starter 
Oh sorry one more thing what kind of a pump would be powerful enough for the above setup?
post #3 of 20
Thick and high fpi rad with 38mm fans would do well enough

could do with like an rx360 or something with lower speed fans too i would imagine but your temps probably won't be the best.
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post #4 of 20
is it enough, yes. it it ideal no. If I were you get a thick 360 rad. If you dont like the temps just add the 240. easy as that
post #5 of 20
I would go with 1/2" ID Tubing a D5 pump and the single 360mm RAD.

Run it for awhile and see if temps stay where you want them. A quality RAD should be able to keep thermals under control with a D5 moving the water.

Something that may help would be how you setup your loop. While loop setup will not have a massive impact on thermals is can make a difference of a few degrees.

Do you already have a 360mm RAD?
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post #6 of 20
Honestly speaking I'd reserve 240 for the CPU if you're not water cooling the whole motherboard, and use the 360 for the GTX 690, I'd run this as two separate loops. I'd usually recommend the MCP655, it's a pretty powerful pump and I am sure that it can run a single loop CPU/GPU combo with dual rads.
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post #7 of 20
Look at the parts in my sig rig. I've got a 3930K at 4.8Ghz/1.31v and 7970 at 1225Mhz/1.3v running on a single 360 rad. In BF3 my GPU load is in the mid-40s and CPU load is in the mid-50s. GPUs are easy to cool (look at the antec kuhler mods), so you'll be fine with a single 360 even with dual GPUs. Adding a 240 will help knock maybe a couple more degrees off, but nothing major. If you can afford it, I'd say just go with the 240 for the hell of it. I'm adding another 120 to my 360 just for kicks, but not expecting major changes. I plan on adding a 2nd 7970 in the future so my upgrade is mostly to off-set that and keep my current temps the same.
Edited by Johnny Utah - 6/20/12 at 11:56am
    
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post #8 of 20

Generally you want at least 120 mm of RAD space per component at stock speeds.  So a 360 might be fine but you would be looking at some pretty warm temperatures.  I would definitely recommend getting the 240 in there as well.

 

As for a pump, since the 690 block would have two restrictions on it, you can safely consider it as 2 blocks on top of the CPU block and the two RADS.  Depending on loop length and layout. You would be looking at a bare minimum of an MCP355 and that would be the bottom.

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post #9 of 20
I have been asking myself this same question for years. I have never tried to cool a CPU/GPU in the same loop. But if I had to do it, for space reasons, I would at least run a 80-120 rad internally between the CPU and the GPU, even if its passive, it will help a ton. And your going to need a fan controller, run hiflows and tone them down for MM or video.

Just my 2C
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post #10 of 20
If you are OK w/ using ~ 1800RPM fans (like the GT AP-15s) you should be fine.

http://martinsliquidlab.org/2012/04/14/360-radiator-shootout-summary/
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