I thought i told you how it (X800GTO card) performs with NFS Carbon. It works fine at 1280x960 with full details. Not sure if you can get good frame rates with antialiasing and anisotropic filtering turned on. Remember you can't apply motion blur with that card. But there is no point going for a slower nVidia card which can apply motion blur because even a 7600GT can't run as smooth as a X800GTO in NFS Carbon.
However, since I have modded my card to almost an X850XT (Core/Memory at 520MHz/530MHz compared to 520MHz/540MHz of X850XT with all 16 pipelines unlocked) which is about 60%-80% more powerful than the X800GTO at stock speeds (400MHz/490MHz with only 12 pipelines), now I can play NFS Carbon at 1600x1200 and 2X (or 4X? can't remember) antialiasing and level of anisotropic filtering the game applies still having the frame rates around 25-45. (that's a long sentence

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About the monitor... I believe you should check the monitor specifications a bit before buying one. Normally, the monitors that can be found for Rs.12,000 range come with a maximum resolution of 1280x960 or 1280x1024. That resolution is fine. But the problem is that most monitors can't run at a higher refresh rate than 60Hz at those resolutions. I have a Prolink 775CA which has a maximum resolution of 1600x1200 with 60Hz. But it can work at 1280x960 at 75Hz, so I'm ok. I can't work with refresh rates less than 70Hz. I start to see monitor flickering at 60Hz etc. You might not have that problem. But if you do, check the specs first and try to buy a monitor which gives 70Hz+ at 1280x960 resolution. Even if you don't have that problem, it's still better to buy a monitor with higher refresh rate because it's good for your eyes (less strain on the eyes).
On a side note, don't buy that Prolink monitor even if the specs are good. It's a real pain in the ass. It has started to give lots of problems. Have to get it replaced. In fact, stay away from Prolink or any other brand which doesn't have a very good reputation in the field of monitors. Even if you spend few thousand rupees more, buy a good monitor because in the end, there is no point having a super fast computer if you can't work on it for more than few minutes.
Same applies to mouse and keyboard. People don't pay much attention to them, but they are the most important components because those are the direct forms of interaction with the computer. Buy a good Logitec keyboard and mouse. Don't buy cheap stuff, even if they only ask Rs.500 for both together. PS2 is fine because you can't use PS2 ports for anything else. It will save the USB ports for external devices. I don't see them listed in your list of components so I believe you haven't paid much attention to them either. Try to test few keyboards and mice before you buy. There are some fancy keyboards which will cost more, but might not perform as easy as the cheapest Logitec keyboard. Don't be fooled by the looks and price as well; especially Sri Lankan prices
