How to calculate the amount of Rad you need?

[keikeimok]

Hiya, I saw from the web saying how much Watt of system needs XX rad to handle, is there any equations to that? Are they talking about the wattage of the GPU or something else?

say how much Wattage could a single 120 rad could handle?

 

[keikeimok]

WOW! Thanks for your input. Really learned a lot.
I am having 2 setup atm. I think neither one is qualified as adequate.

One is CPU(4770k), 2 X 7990, 1 360 and 1` 120 EK think Rad.
The other is CPU (FX8320), 6990 X 6970, 1 360 XSPC thin rad 1 120 EK thin rad.

Things are, under heavy mining, the one with the thin rads never go beyond 69 while if only use 3 GPU from the 7990, it will go beyond 73.

I was thinking both are using 3 GPU, but still the thin rads seems doing a better job than the thick one.

As you know both CPUs are more or less idle while mining......

 

[keikeimok]

Another important factor is how hot/cool do you mind/want the components to be, and how much noise is enough/too much? as the cooling loop required will change drastically depending on that.

I.E I have a pair of Thermochill rads in my system, a PA120.3 and a PA160.1, that's the equivalent of about 6-7 standard 120mm rads but the cooling wattage will vary greatly depending on the fans used. If I was to stick 500RPM slipstreams on everything it would be inaudible unless you put your ear next to the fans but it wouldn't be able to keep my 4.5GHz i7 3820 and GTX680 much cooler than air, however if I was to stick 1850RPM GT's on everything then I could probably swap to a 3930K and SLi Titans while getting better temps (but it would be loud).

I see. Cheers!