Your power supply will provide enough wattage, so that's good. Here is how to install a second GPU. Put it in the next PCI 16x slot, plug in the power connectors, and slap on the Crossfire bracket.
I'm not actually sure what cards I want to use but as for power supply its 650w what cards can and can I not use? Thx
On a 620watt PUS, there arent many cards, if any, that you can run in SLI/Crosfire. What is the make and model of the unit? What are the specs of the rest of your rig?
uH HERE
ASUS M5A97 R2.0 Motherboard
Cougar 5G01 Pioneer Mid Tower Case
AMD FX-8320 8 Core Black Edition Processor
Corsair VS650 ATX Power Supply
MSI Radeon R7 260X Overclocked 2GB
ASUS DRW-24D3ST 24x DVD Writer
Western Digital WD Green 1TB WD10EZRX
Kingston ValueRAM KVR16N11/8 8GB (1x8GB) DDR3
Your power supply will provide enough wattage, so that's good. Here is how to install a second GPU. Put it in the next PCI 16x slot, plug in the power connectors, and slap on the Crossfire bracket.