Hi, I am looking to do some upgrades to my January 2010 Custom Build. I am wondering if I should upgrade my RAM. I have 4GB of OCZ Reaper and 4GB of Kingston HyperX RAM. The system is still fast today and am pleased with it but I am wondering if I could get some better DDR2 RAM this day in time. My Motherboard is the GIGABYTE EP43-UD3L, my Graphics Card is the GIGABYTE GTX 670 which replaced my old Graphics Card in 2012 when the other one went bad on me. I have the Intel Core 2 Quad Q9650 but I have not decided to do Overclocking yet still to this day... It performs pretty well on Battlefield 4 but i run into some stuttering in GTA IV. Is GTA IV more GPU or CPU intensive? Thanks.