A 4850/4770/5750 or GTS250/9800GTX+ or higher would allow you to play games on very high settings with some AA/AF, if you want to be able to max everything to get that slightly better appearance then the next tier up, 4870/5770 or GTX260, would be good. Make sure you have a sufficient power supply for which ever card you pick, the 57xx series are very low power and shouldnt give you an issue no matter what you have but the GTS250 or 4850 might if you dont have a decent PSU.
i am buying a second hand card, i am not buying 5750 or another 5xxx cards because they are costly @ i need to get a good PSU. So just wanted to know is 4850 enough to play latest games like Arma 2 or GTA IV in 1440x1024 ???
& approx how much times its better then Geforce 9400 GT
ok... well tell us your PSU specs. We should have had that to start with.
Also-- is this a special deal from someone or are you shopping? we need your price range, and we need to know how much you could get the 4850 for.
The 4850 and GTS 250 are similar in performance--whatever is cheaper would be better for you. Any of the cards discussed would be a giant leap over the 9400GT. On a 19'' monitor its probably not worth it to pay for more than 512 mb on the card.
Arma 2: System Requirements
Minimal PC Requirements
* CPU: Dual Core Intel Pentium 4 3.0 GHz / Intel Core 2.0 GHz / AMD Athlon 3200+ or faster
* RAM: 1 GB
* Video Card: NVIDIA GeForce 7800 / ATI Radeon 1800 with Shader Model 3 and 256 MB VRAM or faster
* OS: Windows XP
Optimal PC Requirements
* CPU: Intel Core 2.8 GHz / AMD Athlon 64 X2 4400+ or faster
* RAM: 2 GB
* Video Card: NVIDIA GeForce 8800GT / ATI Radeon 4850 with Shader Model 3 and 512 MB VRAM or faster
* OS: Windows XP or Vista
The 57xx cards have DX11 labels but are already choking on DX11 games at 1920 x 1200.....see the Dirt2 article on THG's home page. If DX11 future proofing is the goal, the 58xx is the entry point if looking to actually play DX11 games as opposed to just having a DX11 label.