I wouldn't upgrade that, no need. Maybe invest some money in extra cooling for the case and do a bit of overclocking, although I'm sure that card plays any game without breaking a sweat at stock frequencies. Best to save some money for the next generation of GPUs, when they actually release a new architecture. I've read that the 8xxx series from AMD and 7xx series from nVidia will be made mostly out of rebadged current series chips.