4770k
Core 4.6ghz at 1.3v adaptive
Cache/uncore 4.2ghz at 1.275v adaptive (see below)
Custom loop 320mm rad, DTEK fusion block. Same setup as here, old pre-ivy pics, ivy is now my home server/GF's computer (x58 build on these pics):
viewtopic.php?f=16&t=69451&p=1042516#p1042516 except I pulled everything, rebuilt my block, new coolant, new fans, new GPU, new SSD.
Temps are cooler than my ivybridge at 4.6 (it needs 1.32v). Games in the 40s-50s C range, prime in the low 70s (this is with vcore locked at 1.3 for prime, once I had it stable I turned on adaptive voltage, with adaptive voltage prime would jack the voltage to 1.4 due to the haswell +.1 AVX thing, so I never ran it once stable).
To people having problems overclocking haswell, the big issue I had with mine to get it stable was the cache/uncore. I hit a brick wall clocking this chip that I did not run into on a 4670k. The 4670k was built for a friend, I had on air (212 evo) so I stopped at 4.5ghz, 1.25v adaptive I think, everything else on auto. My chip seemed to stop at 4.4ish, turns out with the cache speed on auto, it was ramping it to match the core speed, with not enough voltage. I locked in the vcache at 1.3 volts also, but it would always run .025 higher than set, so at 1.275 it would match it to my core's 1.3v. End the end, the cache had to be lowered to 4.2ghz, to make my chip stable at 1.275vcache, even 4.3ghz cache @ 1.35v was a no go.
Also, lots of guides say the memory controller has trouble in haswell when the chip is overclocked near the edge, I did not have this issue, I used DDR1600 for all my testing, then moved it to XMP DDR2133 with no issues.
I wonder if the I7 with more cache, or just a bad chip, gave me more trouble where I had to de-sync the core/uncore vs the I5 chip.
I can dig up my OC notes if anyone is interested on all my pass/fail speeds and voltages.
Edit: I was going to de-lid my chip re-TIM, but temps are so low, that I don't see the risk/reward gains for my setup.