Nvidia 7800 Video Card problems!!!!?

My Current Computer Setup:

Windows XP Professional SP2

Intel Celeron 2.4 Ghz Processor

512 MB RAM

Nvidia GeForce 7800 GT OC



Problem:

I upgraded from a Nvidia 5500 FX OC, and there is no noticeable difference in the games I play. I usually play counter strike cz and I started playing source and decided to get the 7800 to get better FPS and less lag. With my old card i was gettin around 25 FPS max in counter strike source. With my new one i was expecting to get a little more maybe around 40 or 50 but im still maxing out at 25 FPS and when I run into a bunch of people at once in gameplay it will even go down to 10 FPS sometimes which results in alot of lag. What makes me mad is that I paid $370 for the 7800 and there is no difference. Does anyone know what I can do to fix this problem. Do you think there is something wrong with my computer, or is the videocard defective.|||You may need a BIOS upgrade to your PC or firmware upgrade or driver upgrade to/for the card or it may be the Celeron processor. Notice on the Nvidia box what the minimum hardware requirements are to see if it says specifically Pentium or Celeron or that either is okay. Also, likely you aren't the only one this is happening to so I would post this problem in the Nvidia technical support forum with all of your information. It's possible there is some type of fix for it if it's a known issue. Good Luck!|||It's most likely defective I had the same problem when I got a Geforce 7800. So we sent it back and got a different one same type of card though and what do you know it worked.|||I would make some recommendations.



Make sure you have the latest drivers for your card. I am assuming you downloaded the most current ones.



The most common problem with graphics performance in Source is processor speed.



I would recommened upgrading your RAM to at least 1GB

Check out this article about source.

http://www.valve-erc.com/srcsdk/general/…