hey bro, played with it a bit, at -30c or so this will get you 5ghz as a base for cpuz benching
turn qpi mode back to fast for other benching. Boot 220x21 and up in windows.
Then just go from there, boot up raise clocks 1bclk at a time and see where it freezes.....add 2or3 pci-e mhz see if it helps...add some vtt see if it helps....add some vcore see if it helps....then add some more pci-e mhz etc. 225 to 238 bclk was a matter of raising pci-e from 108 to 115.
You need eist enabled for turbo to be enabled for x21 multi.
Good luck man
drop any questions in the thread