About recent high-end graphics cards such as 5850 with low res

Curious, even though it is said that it's not needed for something like 5850 for a low res such as 1280x1024, wouldn't it be useful in the long run though, like when more gpu grinding games get made this would be able to play a wider range of newer games like a year more than something such as 275gtx or 4890 at that res therefore making it still useful and worth its price even for such a low res? Already I'd probably get a 275gtx but the possible longetivity of the 5850 and dx11 is luring me there even though there's 1280x1024 and a e6850 cpu bottleneck and maybe a little bit worse performance due to PCI-E1.1 too.

HD4870, 4890, GTX260 would be your best options at the resolution.

Heh, but wouldn't the 5850 last longer at this low res, as in if a game came out way later but got low fps on those cards, it'd still have a better chance on the 5850 or would those same games give no real fps boost? Cause I intend on keeping the next card for quite a while before I get a whole new pc. Just the way I thought of things, since it being more powerful I thought it'd be able to survive more games as they come out until it eventually sucks for a new game at that res.

Ah thanks, I'll wait and see how the 5770 is now