video memory doesn't have to match your system memory type
any new graphics card would run great on your motherboard
660 gtx would be ok
thank you sir but im kinda curios bout pcie 3.0 & pcie 2.0
- 1 x PCI Express 3.0 x16 slot (blue @ x16 mode)
- 1 x PCI Express 2.0 x1 slot
this is what my asrock's manual suggest to its expansion & connectivity
so it means gtx 660 isnt compatibl? am i right?
and PCI Express 2.0 is printed in the board.