So it's not the cheapest x58 at the price of $197 when I bough it from ZZF (no MIR then), that goes to X58 UD3R. But the prices for both are very close. Was considering buying UD3R. But bought the Pro anyway.
Now I am happy with the result, 4.1g is quite stable and I can push it to 4.52g with Vcore 1.44v, Vqpi=1.37v using 6g RAM (OCZ 1600Mhz) on a Noctua HSF.
Now with BIOS 7.1 you can see actual QPI voltage instead the annoying + 0.xxV.
Now I am happy with the result, 4.1g is quite stable and I can push it to 4.52g with Vcore 1.44v, Vqpi=1.37v using 6g RAM (OCZ 1600Mhz) on a Noctua HSF.
Now with BIOS 7.1 you can see actual QPI voltage instead the annoying + 0.xxV.