For anyone still wondering about the answer to this question, the guys working on the NCASE M1 recently tested a 3770K w/ a 7970, all cooled by a single H220. Here is a link to their test results
. Looks like everything was kept at stock.
As far as I can tell, the CPU was left at stock, while the GPU was overclocked to 1125/1575, except during Furmark, as the watercooling block used insufficiently cooled the VRMs of the card. Thanks to subtec for the correction. Using the included fans, pushing fresh air from the outside of the case through the rad. While running both Prime 95 and Heaven, CPU temps reached 74, while the GPU core was 71 and VRMs were 79. While "gaming" (specifics not mentioned), CPU temps reached 59, GPU core maxed at 68, and VRMs at 77.
Honestly...a bit worst than I thought. It seems like an H220 would not be suitable for high performing CPU's and GPU's, especially if you plan on doing any sort of overclocking. I hope this helps anyone else wondering about this. What do you guys think?Edited by Brandonandon - 6/4/13 at 10:08am