The mobo is fine. Make sure to put the 1080 between the two Ti in the second/middle slot, since it needs the least cooling. And get a few extra fans if you already haven't 
With the PSU don't go under 1200W, cause even if it might work fine, it's not very wise to run a PSU at some limit. Efficiency drops too. My rule is: system wattage x 1.5 and you're good to go. That system will draw 800W under full load so a 1200W PSU is fine.
There is a slightly older Seasonic Platinum PSU with 1200W, that seems to be a bit larger but then also cheaper. Should be fine too.
That's correct if you meant Hashcat uses THE MOST power any benchmark could draw
NVidia GPUs usually hit their powerlimit under Hashcat cause it typically uses all shaders all the time at full blast.
With the PSU don't go under 1200W, cause even if it might work fine, it's not very wise to run a PSU at some limit. Efficiency drops too. My rule is: system wattage x 1.5 and you're good to go. That system will draw 800W under full load so a 1200W PSU is fine.
There is a slightly older Seasonic Platinum PSU with 1200W, that seems to be a bit larger but then also cheaper. Should be fine too.
(03-08-2017, 10:45 PM)cpu_pirate Wrote: ... and typically hashcat doesnt draw the power that benchmarks do from my GPU I think you will be plenty safe with a 1200w psu, maybe even a highly rated 1000w.
That's correct if you meant Hashcat uses THE MOST power any benchmark could draw
NVidia GPUs usually hit their powerlimit under Hashcat cause it typically uses all shaders all the time at full blast.