Even though this thread is pretty dead, I guess I'll try in here first.
I used the Haswell Overclocking guide over on Overclock.net on my CPU last night. Anyways I just want to check if my Haswell chip is more or less normal. I'm using a Asus Z97M-Plus motherboard, with a i5-4690k and a Hyper Evo 212 cooler.
I probably should have upped multiplier and voltage slowly, but I read that most people with a Haswell chip could do 4.4ghz on air at 1.25v-1.3v so I just went straight to 1.25v and multiplier to 45.
When I ran Prime 95 temps got really hot 94 deg in about 10 minutes, so I stopped that test. I tried 1 loop of x264 and temps were a lot lower around 75C maximum. Obviously I need to run it a lot more but I didn't have that much time last night. I played some Skyrim (about half an hour) and ran the Witcher 3 (half an hour) and the temps were really low, around 60 deg. There was something weird with Skyrim right at the start of the game, where the horse moved up and down for no particular reason. Is that something to do with the overclock? Everything else was fine though.
Should I bother fine-tuning it? Reducing voltage? up the multiplier again? I'm happy with 4.5ghz with 75 deg temps. Does it matter if it failed Prime 95? and how long should I run the x264 stress test for?