>>275545596
4.4 is the turbo frequency, so you're only going to get that on one core in certain situations. You're usually going to be closer to the base clock of 4.0. Just find a guide and work your way up from there until temperature or voltage gets too high. I think this is the one I used, but it's been a while.
https://www.overclock.net/forum/5-intel-cpus/1411077-haswell-overclocking-guide-statistics.html#/topics/1411077