h100i and i7 4770k

Honestly that is a tad bit high; It really depends how you have your fans, TIM used, polished plate on waterblock, and others.. First get a reliable temp program, such as RealTemp1.0.

Some say push is better, some say pull is better.. You have to figure that one out after you get everything else lined out. What are your Vcore and Cache Voltages? For a 4.3 OC, set your Cache voltage to NOT more than 1.25 and Vcore just a tab below that, so around 1.23 or so; Every CPU silicon is different.. I have a Costa Rica chip and Im able to get up to 4.8 on h100i...but it's very close to borderline too hott...anymore or anything over 1.3 volts ANYTHING on this cpu and it'll hit 90+ before you can blink...so MAKE sure you have adequate cooling solutions..4.5 on Air is bout the limit, with very few exceptions.. 4.8 or so on water with very few exceptions...past that, it's L2N... But lets face it..who wants to run 5Ghz+ and have to use L2N all the time? Record setting only.. You need to run a few programs like Prime95 for a few hours to see if it will remain stable... If you have XMP compatable memory, leave it at factory settings to start.. Don't OC memory just yet.. Get your CPU stable first then worry bout the RAM later. I have the H100i also and was having massive temp issues for several reasons. The biggest factor, was the copper block. I took mine and polished it to a mirror finish, then I used Arctic MX-4...VERY VERY little of it I might add. The other issue you have to watch for, is getting small air pockets between the block and top of the IHS. May want to check to make sure your block is flat as possibe... I use a razors edge, and shine very bright light behind it to see if I can see light under the edge..if not, you're good to go..But it's near impossible to get perfectly flat less u've very expensive equipment..but getting close is near good enough. I have my RAD outside the case, atop my tower mounted upright, with hoses on the bottom; That way, it;'s outside and not contending with heat from inside the case. I also have the Asus MAXIMUS VI FORMULA MoBo, so it's watercooled. After you polish your block, set RAM to factory, OC to 4.3, (set cache @ 4.1) and the volts listed above, your temps should NOT get over 50-60C. Mine is as described above and with Prime running max, 8GM G.Skill @ 2400 XMP Pro.2, my temps never get above 50. But my ambient temps are like 68-70F. That makes a difference too; Then you can figure out whether push or pull is better.