Hello, i was considering buying AMD radeon 6570, the problem is that im not pretty sure it´d be a good idea, just because the 'computer' is a three year-old HP with 2GB in RAM DDR2, the processor is the 820 intel pentium D and has a sata 250 gb HD, and it came with ati 200 xpress graphics integrated; so do you think all this stuff deserves spending on the HD 6570 or i should buy HD 6450, im going to gaming a bit, but integrated graphics doesn´t support more than shaders 2.0