Archer
Honorary Master
See, this is what I have been thinking about too. So let's assume a 800w PS, and let's take the two 1050 cards as above, each running at, say, 60w. How do you go about calculating, with having some sort of equipment or thingamabob, what your consumption is going to be? Any way of seeing that via app or something? If the PS provides a maximum of 800w, then how does the varying utilization affect the power drawn from your mains?
Check PSU efficiency rating. This will vary according to load but let's assume 90%. GPUs draw 60x2, everything else should add up to 100W max (assuming no GPU mining only on the machine) so thats 220W. 220/0.9 = 224W at the wall
In my case I can run my 6xGTX1070 at 70% power before losing hashrate, so roughly 600W+100W which puts me at ±92% efficiency on my PSU, total wall draw 760W