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What Rad size for HD5850 X2 + 2500k

post #1 of 9
Thread Starter 
I am thinking of going under water, But i have no idea what radiator i should be looking for,
i need it to cool a 2500k @ 5.0ghz
And Two HD58580's in crossfire, both at 1ghz

Would a RS360 cool them fine?
And what rad would i need if i took the cpu out of the loop

thanks
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post #2 of 9
The RS version of that rad wouldn't be enough, however the RX version would be. The RX is MUCH thicker and will cool much better than the RS.

Edit: Without the CPU, the RS would probably do the job fine. With all three though, I definitely recommend the RX.
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post #3 of 9
Thread Starter 
Well it would be mounted in the bottom of an RV02 so a thick rad may hit my cards

Also the most i can afford is an RS360
- So would that be enough for Two HD5858's (or 2 470's)

+rep
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post #4 of 9
I don't doubt the RS can handle two GPU's.
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post #5 of 9
A Swiftech MCR320 probably could if it fits inside, they have an extra row inside 'em.
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post #6 of 9
I would concur with the above in that a RS wouldn't be enough for your needs. Not sure it'd be enough for the 470's either, could be wrong though...it's happened once before

If 1 360 is too big have you considered/would you have room for 2 240's?

2nd hand PA120.2's can be had for around £40, up there with the very best 120.2 rads and this config would also give you, in effect, a 480
post #7 of 9
I know with a RX 360 with my i7 930 and 5970 its just about as much as my loop can handle. So for sli cfx. You will want at least 480 in rad space thin or thick. Thick will give you the best temps. You can also look to buy used from OCN there are usually good deals out there.
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post #8 of 9
The RS360 would be more than enough.
Your CPU is only 1.355v so wont be adding alot of heat to the loop. (Y)
    
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post #9 of 9
A single RS360 probably wont cut it for 2 graphics cards and an overclocked CPU. If space is an issue, you may be able to fit in 2 radiators in your case easier then fitting one thick radiator. If you add a 240 radiator into your loop you should be fine, even if they both were thin radiators. You may still be fine with by adding a 120 or 140 radiator in addition to the RS360. Most likely, that would fit just fine in the space for the rear fan in your case.

If you do go with 2 radiators, I would recommend trying to follow a loop something like this: Res > Pump > Bigger Rad > CPU > Smaller Rad > GPU(s) > Res
    
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