I know this is a late reply, you probably have already finished your OC, but I had a EVGA P67 FTW and now a EVGA Z68 FTW, not sure how that compares to your mobo as far as OC capability, but when i had the P67, I had the same H60 Watercooler, and my OC was set at 4.8Ghz x48 Multiplier and voltage at 1.35v. On Full load I was getting temps that topped out at 75-78C. However, I had aftermarket Coolermaster LED 120mm fans, $6 fans so not super impressive, but they were in a Push/Pull Configuration. only 69CFM and 19dBa.
Now on my new Z68 board, I have it all set up exactly the same, but with the H100 in a push pull configuration with the same fans mentioned above, (4 now of course) but my temps only dropped by about 2C, so you dont need to upgrade the cooler unless you go way aftermarket and get more expensive radiators and pumps etc... Dont need to go out and get amazingly fast fans either because the stock pumps on those Corsair coolers in conjunction with the radiators cant really dissipate the heat fast enough anyway.
4.8Ghz is about the cap for those coolers though, had mine at 5.0 had to take it up past 1.4v but in full load they were hitting 84-86C which is way above my safe temp range of 75C.
Also, at 4.5Ghz, I was able to keep my voltage at auto, so it would set it just under 1.3v at that speed.
Hope this helps as this is just some info on what my settings were.
P.S - My room temp is usually around 24C( 75-76F) to get the above full load temps. I tested it a while ago with the room temps at 70F, probably where normal people keep there temps, and at full load I was getting 70-72C.
<message edited by crezno on Sunday, October 09, 2011 5:07 PM>
[Intel I7 3770K @ 4.5Ghz / Swiftech WB] [ASRock Z77 Mini-ITX Motherboard]
[EVGA GTX 690 @ 1178/6900 / XSPC Razor Waterblock]
[8GB G.Skill Ripjaw 2133-9-11-10-28] [1TB WD Black 7200 SATA3]
[Silverstone SG08B Mini-ITX Case] [Silverstone 600W PSU]
[27" Yamakasi Catleap x3 @ 8080x1440 Resolution] [25" @ 1920x1080]
Performance and Extreme Presets 3DMark11 / Heatware