[NAME]  For the tower version yes. For the Small form factor it wont fit inside the case. The 850 is overkill the 700 is fine for everything and can be re used later in other systems. I usually Recommend EVGA 850B these days because it can be had and it fits fine. EVGA 110-BQ-0850-V1 B01FYDUCA0 These are in stock at amazon Another unit is the EVGA 700BR EVGA-100-BR-0700-K1  B07DTP6MWS There are Various Sizes MT (Mini Tower)DT (Desktop)MFF (Micro Form Factor)SFF (Small Form Factor)USFF (Ultra Small Form Factor) [IMAGE]  
Is there a psu for the 7010 with a power switch built into it?  I think the switch-less one on mine just bit the dust. Yeah 
Optiplex 7010 PSU