Can I run any kind of 2 or 4 gb ddr5 graphics card in my esonic h55kbl.. power supply: 450 watt. ( SLOT: 2 x PCI-E x16, PCI.) So, if I can run,what graphics card will be better. 4gb or 2gb ddr5. I have i3 1st generation and don't want to change processor or motherboard and want to play high graphics games like ... gta5, assassins creed,nfs rivals,the run. Etc... Need solution for best graphics card to run these games. Another question: is ddr3 best or ddr5. Thanks.