I have a Dell Studio XPS 435t/9000 that currently has a 475W power supply, AMD Radeon 5800 Series, Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, and 16Gb of DDR2 Ram. I want to upgrade my power supply and my GPU can I am thinking about getting a 650 Watt Power supply and the XFX RADEON RX 480 8GB Custom Tuned OC Graphics Card w/ Backplate. My question is will the i7 920 be able to handle the new graphics card or is it time to think about upgrading to a new machine?