But the main thing i was curious about was if anyone has moved there sandy k series cpu from a older p67 to a z68 or z77 and have gotten a better overclock or even the same overclock with less voltage. That was my main Question. I was hoping some people here might have had personal exp doing this that might have some feedback.
If you want a higher OC and your current P67 is halfway decent, you're better off spending your money on a better CPU cooler...assuming you're not already on liquid cooling. (See here for liquid vs air cooling temp differences
) The newer Z77 chipset alone WILL NOT improve your OC. Some motherboards overclock better than others, but the difference is typically 200MHz or less. For example, using the same i7-3770K CPU (main difference being liquid cooled vs air respectively) this $120 board got to 4.6GHz
while this $400 OC board got to 4.9GHz.
Keeping in mind that real world performance does not scale linearly with frequency increases, the difference doesnt justify the >3x price unless you're using it to win overclocking competitions.
Main: i5-3570K, ASRock Z77 Pro4-M, Asus GTX660 TOP, 500GB Crucial BX100, 2 TB Samsung EcoGreen F4, 16GB 1600MHz G.Skill @1.25V, EVGA 550-G2, Silverstone PS07B
HTPC: A8-5600K, MSI FM2-A75IA-E53, 4TB Seagate SSHD, 8GB 1866MHz G.Skill, Crosley D-25 Case Mod