The quick low down for my setup,
not so good news first
1/ Plagued with the WHEA errors. Windows wouldnt load with my 780 unless I set the first 3 settings in 'PCI Subsystem Settings' to GEN2. I have seen errors also with my 840 Pro plugged into the SATA slots. Im guesssing these are also on the PCIe bus.
2/ Sometimes I cant boot from the 840 Pro. Seems like the SATA ports 3/4/5/6 fail to intialise on post, as you hit the BIOS and they cannot be seen. Have to either power down or reboot a couple of time. Fortuntely have not seen such issues with the 960 EVO
Moving the 840 Pro to SATA ports 1 or 2 is OK
3/ Not common just to this mobo but PBO settings do not take effect, neither does the fsb overclocking.
the good news
1/ Yay! My RAM can run at its rated settings and more
2/ Happy with how the boost algorithm is working with my custom WC loop.
Using prime95, latest version, blend. I see heavy AVX2 workloads at around 4075-4100 all core clock, cpu temp is 85C.
Other not so intense workloads im seeing 4200mhz all core clock, with temps around 65-70C.
3/ Also seeing 4.4Ghz single core boost clocks, its usually toying between 4375-4400mhz, im using the CPU-Z single core benchmark to test but it jumps from core to core and when it jumps frequency can drop momentarily to 4300mhz but then on the same core and boost back up.
Cinebench r15 is 1640/204 (not running with priority set to max).
Still checking what works and what does not, hoping that a BIOS is made available that allows certain features to work.