Alright guys sorry if this kind of redundant but I want to make sure for my specific build.
Right now I have a CORSAIR Professional Series HX850 in my system with a single EVGA SuperClocked 012-P3-1573-AR GeForce GTX 570 HD. I wanted to get a second one and wanted to make sure that the PSU would be enough to handle that load. The specs I have currently are :
EVGA SuperClocked 012-P3-1573-AR GeForce GTX 570 HD
ASUS 24X DVD Burner
Seagate Barracuda ST31000524AS 1TB 7200 RPM 32MB Cache
G.SKILL Ripjaws Series 16GB
Crucial M4 CT064M4SSD2 2.5" 64GB
Intel Core i7-2600K Sandy Bridge 3.4GHz
CORSAIR Professional Series HX850 (CMPSU-850HX) 850W
ASUS P8Z68-V PRO LGA 1155 Intel Z68
COOLER MASTER HAF 932
So basically, 1 SSD, 1 Hard Drive, 1 Disc drive, and the single 570.
For a system running with two GeForce GTX 570 graphics cards in 2-way SLI mode, NVIDA specifies that the power supply unit should have a minimum of 800 Watts or greater with a combined +12 Volt continuous current rating of 56 Amps or greater and with at least four 6-pin PCI-Express Supplementary Power Connectors.
Your Corsair Professional Series HX850 (CMPSU-850HX), with its +12 Volt continuous current rating of 70 Amps, is more than capable with plenty in reserve for any overclocking of the CPU and GPUs that you may want to attempt.