I'm going to build a new homebuild systeem soon and I have question about the power supply.
I have used Neweggs PSU calculator it says I need at least 851W for this set up
but eXtrme Power supply calculator says I need at least 666W
It's a big difference so thats why I'm asking it here
What do I need for the set up mentioned below?
2 x MSI N570GTX Twin Frozr III
Asrock Z68 Extreme3 Gen3
WD Caviar Blue WD5000AAKX
Corsair Carbide Series 400R
Corsair Force Series 3
Intel Core i5 2500K
Corsair Vengeance 1600Mhz 4x2GB
Corsair H100 Liquid CPU Cooler
For a system using two GeForce GTX 570 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 800 Watt or greater power supply that has a combined +12 Volt continuous current rating of 56 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.
Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.
Overclocking of the CPU and/or GPU(s) will require an additional increase to the combined +12 Volt continuous current rating, recommended above, to meet the increase in power required for the overclock.