How can I know how much of a video card my computer can support?

I have Windows XP Home Edition Ver. 2002, Service Pack 2

AMD Athlon Xp 2800+; 2.09 GHz, 1 GB of RAM;;



This is an update to my previous question with my system specs. I'm going to update my video card again but I need to know how much my computer can take though. If I need more RAM I'm probably going to buy more too.|||The upgrade isn't limited by anything you listed there.



There are two limits to what you can upgrade to:



First limit is what slot your motherboard has for upgrade. If you have an AGP slot the best upgrade is going to be an Nvidia Geforce 7 card like the Geforce 7900 or 7950.



If you have a PCI-e card then the best upgrade possible would be the Nvidia Geforce 8800GTX ultra.



However, the second limit is the power supply in the machine. An 8800GTX sucks back the electricity in a big way (I seem to remember over 300 watts of power just for the video card). The 7950 card also uses a lot of electricity.



If your power supply can't deliver enough power the system will stop working or be very flaky.



As for buying more RAM, going from 1GB ro 2GB won't help video performance but it can certainly help system performance although with XP home 1GB is probably fine.|||just type this on the run program dxdiag|||You need to know what kind of interface slot you have (AGP, PCI or PCI Express), and what is the size of power supply you have (how many watts)|||u can run a g force 256 or 512 video card it should run smooth i have the same setup as u have and im runnin a g force 512 with no problems.|||As big of a video card as your power supply can handle. It has its own memory and doesn't care about your system ram.