[technopoptart]

i5 is a good cpu, unless its an original from 2009 you should be looking more at upgrading the graphics card, which i presume should be pci-E ( PCI express); If you graphics are integrated into the board you can still override it and install a newer card as long as your mobo and power supply can support it. A GIG or more of graphics memory goes a long way more than just CPU power. The GPU and its memory are where the math behindsthe renderings take place.