Is my PSU good enough?

[FlatBlackXD]

Now that I have been running two XFX Radeon HD 6870s with no problems so far outside of some boot up issues coming out of sleep mode, I figured I should ask the question about if my current PSU is good enough to do the job.

Build:

Power Supply: Corsair 850W Enthusiast Series - http://www.newegg.com/Product/Product.aspx?Item=N82E16817139009
Motherboard: Asus Sabertooth X58
CPU: Core i7 950 @ 3.07(stock speed)
Video Cards: 2x XFX Radeon HD 6870s(no overclocking)
Memory: 3x 2GB G.Skill DDR3 1600(default)
Storage: Samsung 830 128GB SSD, OCZ Vertex 2 60GB SSD, and an older Western Digital 320GB HD.
Case: Antec 900 with all default fans + one fan on the side of the case. Total of 1x 200mm top fan, 2x 120mm front fans, 1x 120mm rear fan, and 1x 120mm side vent fan.

 

[Rugger]

Absolutely...The Corsair TX650 would be enough for your rig.

 

[FlatBlackXD]

Absolutely...The Corsair TX650 would be enough for your rig.

Really? I figured two GPUs and the i7 build alone would be cutting it close. If not, that's great.

 

[FlatBlackXD]

Best answer selected by FlatBlackXD.