Hello, I’m new to this forum 
I would like your help with upgrading. I currently own a HP Pavilion a6552f and it has a GeForce 9500 GS (more specs are down below). I am now looking at purchasing a new card and one that has crossed my mind is the GeForce 9800 GTX (Buy the PNY GeForce 9800 GTX+ 512MB Video Card at TigerDirect.ca). My question is am I even able to upgrade my GeForce 9500 GS to a GeForce 9800 GTX with the system I have now? My other question is would there be another graphic card that you guys recommend that I am able to install on this system? I am aware that I would have to upgrade my power supply to a 550 watt, that is not an issue
Base processor
Core 2 Quad Q6600 (K) 2.4 GHz (95W)
- 1066 MHz front side bus
- Socket 775
Chipset
Intel G33 Express
Motherboard
- Manufacturer: Asus
- Motherboard Name: IPIBL-LB
- HP/Compaq motherboard name: Benicia-GL8E
Power supply
- 300W
Memory
Memory Installed: 4 GB
Maximum allowed: 8 GB (4 x 2 GB) (64-bit OS)
Hard drive
- 640 GB SATA 3G (3.0 Gb/sec)
- 7200 rpm
Video Graphics
GeForce 9500 GS
- 512 MB GDDR2 memory
- I/O Ports: HDMI, VGA, dual-link DVI