First we need to know what we're working with.
Brand & Model of Mobo-CPU-RAM-Graphics-PSU.
Brand & Model of Mobo-CPU-RAM-Graphics-PSU.
ASUS M4A79XTD EVO AM3 AMD 790X ATX AMD MotherboardFirst we need to know what we're working with.
Brand & Model of Mobo-CPU-RAM-Graphics-PSU.
so with an upgraded PSU the graphics card will work as a substitute for the lack of a mobo video slot? Because I get no signal at all from the vid card but the fans on both of them run, I assumed if the fans were functioning then the card is functional.650W good quality PSU is needed to properly power a 6850.
When the GPU is installed on the Mobo you should get a video signal to the monitor.
Start with one stick of RAM installed.
Your Mobo is Dual channel so 4GB (2X2) is the better option so you can take advantage of Dual Channel and 4GB is more than enough RAM for any game and most all apps.