With my slow computer the poly count has been limited also the playing

so i have been thinking and i have been checking out a computer that looks good but i donīt really know much of just computers so maybe you could help me
* 2048mb RAM (2x1024mb) 667Mhz
* CPU: Intel Core2 Quad Q6600 CPU 2.4Ghz
* Graphic Card:Nvidia 8800GT 512mb DDR3 PCI Express VGA/DVI/TV Full Microsoft DirectX 10 Support
* 250gb harddrive SATA
* DVDRW Burner ą 20x Dual Layer Liteon
* Modercard Abit/Biostar
* sound: 6.1
* 630 Watt Network something :S
* Network: 10/100 mbit
A bit small RAM but i had 750 on my other computer and it is easy to upgrade...