Overclocking Asrock z77 Pro4

[jordiqui]

If anyone has a similar or the same processor and motherboard. Right now I'm running Prime in custom mode and we started at 4 Ghz. I think it will be a good idea to increase the multiplier by 200 Mhz at a time. If we have hyperthreading enabled, it will limit the overclocking capability. That is, to try more extreme overclocks, apart from a good cooling system, we will have to disable that function, if we specifically want to run benchmarks like Superpi, etc that use a single core.

Voltages that we will use in this processor (valid for core i7,5 and 3 on the 1156 socket) on the mentioned motherboard.
Vcore,
VTT,
DRAM
PLL
PCH

Vcore is the processor voltage. We will increase or try to do so at intervals of 0.060 every 200 Mhz (it's not an exact rule, so each user will determine at their own risk what voltage their processor needs)

VTT is the voltage of the memory controller integrated in the processor (QPI, etc)
Consequently, similar to PLL, since our BCLK will not move and the Ram will not either. In case of increasing BCLK, we will need to increase the VTT voltage. Here we will have it by default at 1.076.

PCH is the parameter that refers to controllers such as PCI, USB, hard drives. 1.05-1.1 should be sufficient. This is what I have read regarding voltages, the parameter appears on wikipedia like the rest;D

DRAM refers to the memory that we will not touch the voltage as long as we do not increase the BCLK.

From UEFI, we will have disabled advanced turbo30, and we will go to cpu ratio which we will leave at all core. We will leave the BCLK as it is and increase the multiplier to 40. We will leave the memory also as it is in the Bios UEFI and move on to the voltages.
The CPU will be in Offset Mode. The CPU calibration in Auto.
VTT and VCCSA in auto and then we move to cpu PLL which will be increasing when we see that the voltage is insufficient, normally this is usually to stabilize the BCLK. In our case as we will use the multiplier we should not have excessive problems to reach 4.8 without touching the CPU PLL voltage which comes to 1.8 by default.

The conclusion is that by increasing the multiplier we could obtain about 4.8 Ghz by increasing the Vcore depending on, on the one hand if we have hyperthreading enabled, and, on the other hand, if we do not. The threshold at which we must disable hyperthreading to increase the processor more can be due to many factors, especially, cooling, ambient temperature, etc.

[Sylver]

Great contribution, I have the Z77 Extreme4 and I will start with this soon, so it comes in very handy.
But one thing, the socket of this motherboard is 1155 and not 1156

Best regards!