Hi mofokiller.
I have an Asus board and and 5930k. I run my memory at 2400mhz so it quite not the same setup.
So I started off at 4.2ghz. I set the cores to each have 42 on the multipliers. The next thing I did Was to manually set the voltage. For the purpose of overclocking set it to 1.15v maybe slightly above to take into account the vdroop+vdrop.
Next I ran the intel xtu stress testing. I am not sure what amount of time is considered to be safe stable overclock so I ran it for 12 hours. It passed so next I do believe I upped it to 4.4 ghz and 1.25v. Again I ran it for 12 hours and it passed it to.
So now I am currently testing at 4.5ghz and still at 1.25v. It is currently going through the Aida 64 stress test.
Correct me if I am wrong but I read on these forums if you are using 3kmhz memory it is better to use the strap of 125mhz. So I would listen to these guys.
I generally use offset voltage control in everyday use. But for testing purposes I just set a fixed amount via manual voltage. So pick a base line point to start from. I picked 1.175v for a 4.2 ghz then worked backwards to 1.15v. As they will tell you it varies from chip to chip how much voltage is needed to make it stable at a given clock. Some need lower, some need higher.
I would like to hit 4.6/4.7 Ghz and just leave it at that. But I use an air cooler and as much as I love it. it's at the point where I would not put any more volts though the chips to hit 4.6/4.7 Ghz. I have a proper watercooling setup ( I bought it two years ago) but haven't installed it.
FYI I don't use watercooling I am using a Noctua DH15 so I think you would get way better temps than I. I want to do watercooling but I am a scary cat
