now my question is i have a compaq it has an amd x2 7550 now it's not the best but it's better then my old x2 4800 i want to play games so what video card won't be bottlenecked by the cpu i installed a 500 power supply with a total of 30amps on the 12v rail
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ATI HD 4850 is a good choice
A HD4850/GTS250/9800GTX/GTX+ will be fine up to 16x10 with game settings at high. If you want to push harder or play very demanding games look at the 1Gb HD4870 or GTX260. Anything more will, possibly, cause stability problems by drawing too much power.
so would my cpu be a bottleneck on any of these cards
That depends on the resolution and type of game you play. AT 1280x1024 or around that leval, go for the HD4850 class of card, at 16x10 or higher, the HD4870/GTX260 will be better. The 'bottleneck' will also depend on game settings: The higher the settings, the less 'bottleneck' there will be.
i was thinking of waiting untill the new video cards come but for now what about a 9800gt untill the new cards come out
Get a single 4850 1GB. It should last you till the new DX11 cards come out and then come down in price. The 4850 has gotten pretty cheap lately so it's a good deal.
^assuming it will fit in your case of course
There is no need to get the 1GB model since the difference between 1GB and 512MB isn't noticeable in almost every game