My system spec is
Intel celeron D 2.4GHz (256kb chace)
MSI Motherboard AGP 4x.
300W powersupply.
512Mb Kingstone DDR 400 bus
Problems I see:
1. Celerons DO suck for gaming, plus yours is only 2.4 ghz, not bad, but not
good for gaming.
2. Your motherboards AGP is only 4x, the card is AGP 8x, so it's not running as fast as it should be.
3. The memory is fine for the minimum that games require now, but you said you wanted
good performance, not just the minimum companies consider playable.
Solution:
Expensive.
You need to upgrade most of your computer to get good performance in the latest games. If you don't want to do that then you need to turn the graphics down to near minimum.
Your system is very similar to my old one: Athlon XP 2000+, 512MB DDR, Radeon 9800 pro All-In-Wonder. And I got roughly the same performance you're talking about in BattleField 2, I also had an AGP 4x mobo.
Don't just go and upgrade your video card because the motherboard is slowing you down more than the video card. The cheapest thing to do would be to find a mobo compatible with your CPU and that is AGP 8x and go with that. But I don't recommend that due to the fact that it's not worth your money, just go onto tigerdirect.com and buy one of their cheap systems.
Here's a good exmaple:
http://www.tigerdirect.com/applicati...757&CatId=1873
And get a modern graphics card, such as:
http://www.tigerdirect.com/applicati...914&CatId=2234