I intend to upgrade my current graphic card (Radeon HD2900XT) to something more recent. I do not want to spend a fortune since my computer is already two years old (E6750, 6gb of DDR2 800 and a 1600x1050 display), and plan to keep it for at least another year. I am basically looking for a “mid-life upgrade” to rejuvenate my computer. I am hesitating between a HD4890 and a HD5770, which are at comparable prices. From what I have read, the 4890 is a bit more powerful, while the 5770 supports DX11. Do you believe the possibility of using DX11 in the mid-term is worth the performance trade-off? Please let me know what you think/would do.