Ive been able to push my i7 930 to 4ghz (22x182) with reasonable (72c) max temps.
I am using a Gigabyte X58A UD3R and the problem is that I cannot seem to get the system stable at any bclk higher than 182, so any help would be appreciated.
My RAM is running at its rated timings, and below its rated speed (1456mhz instead of 1600) , so I don't think its the RAM.
The QPI speed is currently 6.552 ghz (36x182), but increasing the QPI VTT didn't seem to help. Maybe the QPI PLL?
Increasing the CPU core voltage didn't seem to help either (it's at 1.28125 atm) and the CPU PLL is already at 1.88v which is as high as Intel says you can go without damaging the chip.
So the only culprits I see are the QPI, or, its the board and thats as far as I can push it, really hoping its the QPI.
My voltages right now are:
CPU core: 1.28125
IOH Core: 1.180
CPU PLL: 1.880
QPI PLL: Auto
ICH I/O: Auto
ICH Core: Auto
Those last three are on auto because I wasn't sure what to set the QPI PLL to and the ICH voltages didn't seem important.
I am using Prime95 and memtest to check stability and speedfan and CPU-Z to check the temps and speeds.
I'd be grateful for any help, Thanks in advance