To be honest find a 3850 and although it's more money, you'll probably come out on top because it'll last you much longer than any of those cards. If I had to choose out of your listed cards I'd say 8600GT because of it's DX10 capabilities, although most games that use DX10 will probably run like crap on that card but there are some that will do just fine.
Look at this URL and change the third dropdown to see other games and other resolutions.
For example in Oblivion at 1600x1200 (or 1680x1050, whatever) both the 8500GT and the 1650Pro are totally useless at 4 fps. So is the 7900gs for that matter, at 6 fps. I agree that the HD 3850 is a better idea - you can play pretty well at 24 fps.
for now i dont have any power supply, just want to start for the graphic card, HD3850 can able run crysis in high resolution? is there any Nvidia chipset or brand that leveled in HD3850? well when i have the graphic card it follow the Power supply..thanks for the info guys.
how about X1650pro 256 DDR3 or HD2600XT 256 DDR3? they can keep up in crysis? in hi res.? sorry abt this brand here in the philippines we have limited brands here we have only 7600GST 256MB ddr3 here, is DDR3 memory have a lot advantage than DDR2 even it has a large memory? regarding in games...i read that nvidia have a high open GL rather than ATI is it good? any brand that have a directx 10 and high open GL? thanks a lot its a big help
The HD2600 is you best choice of what you've listed, it will destroy any GF7600, and will compete with the GF7900 depending on game (a little low in older games but noticeably fast in new shader heavy games).
For crysis, nothing less than a GF8600 or HD2600 will do, the GF7600/X1650/GF7900 will all be totally dominated in that shader heavy game.
Don't know if you've already bought your card or not, but ignore all the older options and go with at least a HD2600/GF8600, and even then I'd say if you can get your hands on the HD3850 you'd be much better off now and in the long term.
Yup, I am with Grape. The HD2600XT easily beats the 7900GS in crysis, never mind the 7600GT, X1650 pro or 8500GT. Besides the HD3850, it's the best one mentioned by far for that game. (edit - meaning HD3850 is better) http://www.legionhardware.com/document.php?id=698&p=2
1024x768 medium should be very playable in crysis on this card. A friend started playing 14x9 medium on an OC'ed GDDR4 2600XT; I suspect later in the game he'll have some slow areas. Still for the money it's the best you will do for Crysis. (priced in USA anyway)
If you talk high res, be prepared to turn some settings down to low.
another thing it is a bigger difference in ATI HD2600 pro 512MB DDR2 to ATI HD2600XT 512MB DDR3? i mean DDR2 to DDR3? and how about ATI X1650 PRO 512MB DDR2 compare to ATI HD2600 pro 512MB DDR2?? whats the difference pls help this is my last option and i can afford.. thanks
The faster memory DDR3 will be much better than the DDR2 option. Even if this means that you get 256mb of DDR3 compared to 512mb of DDR2. This is generally the case with GPU's memory. I'd get the 2600xt 512mb DDR3 version, if I could afford it. Now there are DDR4 versions of the 2600xt that would be nice to have also, but don't know if that is an option where you at. If you have enough for a 3850, than that would be the best, but that is about $60 more here in the U.S. and not sure if that puts you over budget.