Yeh i had useless gfx also when i 1st started m8, then got this gtx 260 2nd hand but its way more better than the shite ive had before.
The game play is loads smoother and i think more enjoyble also, i still get a jitter now and then on long ish tracks or ones with stupid scenery but apart from that its hunky dory
But i recon i need a new one in the next few weeks

courtesy of the good old goverment