So I was pllaning on getting a xfx 650 xxx edition broze fot my i7 and 970 grapics card.myquestion is wi.l it fit in my desktop whit h is a hp envy 700?
If your HP takes a standard ATX size PSU then it'll fit. See http://en.wikipedia.org/wiki/ATX "ATX power supplies generally have the dimensions of 150 × 86 × 140 mm (5.9 × 3.4 × 5.5 in)[13]:23–24 and share a common mounting layout of four screws arranged on the back side of the unit. That last dimension, the 140 mm depth, is frequently varied, with depths of 160, 180, 200 and 230 mm used to accommodate higher power or modular connectors."
You only need a 500W PSU for your PC - with a gtx970.