Is this enough Rad?

rappybrown · February 22, 2016

Will 2x 240mm rads be enough for an I5-6600k and one R9 390? if so what would your recommended 240mm rads be? (no thicker than 50mm)

Paralectic · February 22, 2016

It's more than enough, the minimum on stock speeds would be 240mm, with a 0.5 for overclocking so if you overclock atleast 360mm rad space.

480mm is ideal.

rmac52 · February 22, 2016

I have always used the rule that for every component in a loop you want a 240mm rad.

So for your loop I would want 480mm of rad space.

This is really overkill though. I would use a 360mm rad in your scenario.

DXMember · February 22, 2016

I'll against the meta and say that a single 240mm 40mm thick rad would be enough for you

MNMadman · February 23, 2016

I use a very simple formula for how much radiator you need as a minimum: One fan space per 100W TDP, rounded up.

You have a 275W TDP GPU and a 91W TDP CPU, which adds up to 366W TDP total. That means 3.6 fan spaces, rounded up to 4. Each fan space is 120mm. 4x120=480.

One 480 or one 360 plus one 120 or two 240s would be the minimum I would recommend.

Also note that I have a 6600K and I've seen it over 130W when at maximum overclock. Graphics cards also routinely go over their TDP values by 10-25% depending on the card manufacturer (my EVGA 980 Ti is limited to 10% over with the stock GPU BIOS, and it goes 10% over every time I play a game). So, while you might be able to get away with having less than 480mm of radiator, you will not be happy with the temps and it may impact negatively on overclocking potential.