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Rad size?

post #1 of 15
Thread Starter 
So I'm gonna be upgrading my video cards to 980's and was wonder would 2 980's and a 4770k all overclocked be cooled well enough on a 360mm rad or would it be better to go with a 420?

I want to note I'm look at Kits right now as I'm getting lost on parting together a loop.

This is going to be in an NZXT Switch 810 also.
post #2 of 15
A good rule of thumb is about 2 x 120 rad area for each cpu/gpu. But you can get away with less rad since you never fully load cpu and gpu at same time. I would go with as much rad as you can fit in case up to 5-6 x120 equivalent. The only other issue is I would make sure you can find suitable fans at same time. More rad you have, the quieter you can run fans and still get good cooling.
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post #3 of 15
Quote:
Originally Posted by KingCry View Post

So I'm gonna be upgrading my video cards to 980's and was wonder would 2 980's and a 4770k all overclocked be cooled well enough on a 360mm rad or would it be better to go with a 420?

I want to note I'm look at Kits right now as I'm getting lost on parting together a loop.

This is going to be in an NZXT Switch 810 also.

I just recently got my 2x 980's and oc a 4790k, 1.31v. They 3 are in the same loop with a EK PE360, pull from SP120 PE. Under gaming, there's no problem even I oc and lower fan speed. But if you torture test all your component at once, in my case I BSOD becuz cpu go over 100 after a few hours.
post #4 of 15
Thread Starter 
Quote:
Originally Posted by opt33 View Post

A good rule of thumb is about 2 x 120 rad area for each cpu/gpu. But you can get away with less rad since you never fully load cpu and gpu at same time. I would go with as much rad as you can fit in case up to 5-6 x120 equivalent. The only other issue is I would make sure you can find suitable fans at same time. More rad you have, the quieter you can run fans and still get good cooling.


Thing for me is that I'm not sure were to start with piecing together the parts for a custom loop, which is why I'm looking currently at kits. otherwise I would be going for a 420 and 240 in my case.
post #5 of 15
Thread Starter 
Quote:
Originally Posted by GhostHitWall View Post

I just recently got my 2x 980's and oc a 4790k, 1.31v. They 3 are in the same loop with a EK PE360, pull from SP120 PE. Under gaming, there's no problem even I oc and lower fan speed. But if you torture test all your component at once, in my case I BSOD becuz cpu go over 100 after a few hours.

I don't torture test my parts I test them for stability for gaming. I.E. Letting haven loop for about 36 hours straight.
post #6 of 15
Quote:
Originally Posted by KingCry View Post

I don't torture test my parts I test them for stability for gaming. I.E. Letting haven loop for about 36 hours straight.

When I said torture test I meant by the stability of the whole pc under any workload. My experience of gaming was that CPU never get to 100% all cores. So like the OPT33 said, it isn't likely gonna cause you any problem using a 360 slim rad with a reasonable fan noise.
post #7 of 15
Thread Starter 
Quote:
Originally Posted by GhostHitWall View Post

When I said torture test I meant by the stability of the whole pc under any workload. My experience of gaming was that CPU never get to 100% all cores. So like the OPT33 said, it isn't likely gonna cause you any problem using a 360 slim rad with a reasonable fan noise.

Well I'm not looking at a slim rad I'm looking at a 60mm thick rad from EK or a 45mm thick from Alphacool
post #8 of 15
Quote:
Originally Posted by KingCry View Post

Well I'm not looking at a slim rad I'm looking at a 60mm thick rad from EK or a 45mm thick from Alphacool

Then isn't it even better? So you are thinking EK XTX and Alphacool XT, I think both will perform well and generate low noise at around 1200 rpm with high static pressure fans. Besides, how far are you able to push ur 980s and make them stable when gaming?

If you are still worried, I suggest you OC now and figure out how much heat you at least need to dissipate.
post #9 of 15
Thread Starter 
Quote:
Originally Posted by GhostHitWall View Post

Then isn't it even better? So you are thinking EK XTX and Alphacool XT, I think both will perform well and generate low noise at around 1200 rpm with high static pressure fans. Besides, how far are you able to push ur 980s and make them stable when gaming?

If you are still worried, I suggest you OC now and figure out how much heat you at least need to dissipate.
Not sure I still haven't ordered them I'm waiting a bit to see how long its gonna be before Frozen CPU gets some other blocks for the 980's in.

I was taking my 770's as a reference point as the currently have a modded BIOS on them and the TDP is set to 300W and is pulling about 90% of that @1.3V with both of them pulling that amount, when overclocked. So with my 770's at 100% fan speed they are still sitting around high 70's low 80's on air under load
post #10 of 15
Quote:
Originally Posted by KingCry View Post

Thing for me is that I'm not sure were to start with piecing together the parts for a custom loop, which is why I'm looking currently at kits. otherwise I would be going for a 420 and 240 in my case.

Then get a kit and add an extra rad + 2 fittings per rad.
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Ivy Bridge
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Ryzen
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CPUMotherboardGraphicsRAM
Intel Core i5 3570K Gigabyte GA-Z77X-UD5H EVGA Geforce GTX 780 Classified Crucial Ballistix Sport 2x8GB 1600Mhz CL9 
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Dell P2414H CM Storm Quickfire Rapid Red EVGA G2 1000W Cooler Master Cosmos II 
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