I need to know what wattage power supply to use


Beta member
US of A
:confused:This is my first computer build! Please help! I need to know what wattage power supply to buy, people have told me wildly conflicting things from 850 watts all the way to 1700 watts.:confused:

Here is rough list of the major parts not counting fans:

Processor: AMD FX 8120 8-Core Processor

Motherboard: GIGABYTE GA-970A-UD3 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD

Graphics Card: EVGA GeForce GT 520 2048 MB DDR3 PCI Express 2.0 DVI/HDMI/VGA Graphics Card, 02G-P3-1529-KR

Hard Drives: Three 75 GB hard drives and one 750 GB hard drive (and I want to be able to add another hard drive with a 2-4 TB in the future)

Other Drives: LG Electronics 24X SATA Super Multi DVD+/-RW Internal Drive Bulk with Lightscribe (GH24LS70) & one floppy drive & one zip drive

RAM: 8GB DDR3 PC3-10600 10666 1333MHz DIMM 240-Pin RAM Desktop Memory 9-9-9-25 Single Stick

:confused:Also I would like to know how much I would need to upgrade my power supply if I wanted to add the other 3 possible 8GB ram sticks to the mother board.:confused: