what gpu do you have? sell it and buy an upgrade with the savings. besides, as an addict, you must know that after 800mhz memory speed/timings has no affect on performance
That really depends on what you are doing. People don't buy fast RAM for nothing, and there would be no market for any faster RAM if there was no difference. In most things, RAM isn't that important, but don't invest in cheap RAM either. You might as well get decent speeds/timings along with quality and good customer support when you have such a big budget, rather than buying bottom of the line memory that will "get you by".