HP Compaq 6005 Graphics Upgrade

Hi. I am looking to upgrade my graphics card in my PC. Here are my specs:

HP Compaq 6005 Pro Microtower
Win 7 Pro (32 Bit)
AMD Athlon II x2 215 Processor, 2.7 GHz
4096MB RAM
Power Supply: 320W
Card: NVIDIA Quadro NVS 290
Display Mode: 18680 x 1050 (32 Bit)

I want to get something that will make my games run faster. I do plan to also upgrade the RAM at some point, it can hold up to 16GB. My budget is really anything from 100-200 bucks as long as it will be ok with the PCI slot and the power supply. I don't have to stick with NVIDIA either. Any guidance is greatly appreciated!

1. Why would you get a Quadro with it in the first place?
2. with 200 bucks, you can proaby get a HD6850 and Corsair CX500 PSU

Quadro? Really?

Spending $200 for the graphics card only or with Power supply Upgrade?

You can get one 6850 and http://www.newegg.com/Product/Prod [...] 6817139028 With rebate

Or if you spend $200 only for graphics card, get http://www.newegg.com/Product/Prod [...] 6814127545

and

http://www.newegg.com/Product/Prod [...] 6817139020

If you tell me why you need to upgrade your Power supply, it's because your power supply will not provide enough power to the card.

Well, thanks to HP it looks like I can't really replace the power supply anyway... The best card I can get is the ATI Radeon HD 4650 (1 GB DH) PCIe x16 Graphics Card.

You get 6670 instead of that card. It should be pretty much compatible and faster than 4650.

OK Good Luck, the 6670 should be enough as it takes power from the slot.