My old PC World computer has just been put in a brand new case with a 300w PSU and on trying it out I noticed the graphics were wishy washy compared to my new machine which has a 256Nvidia card. I am wondering how far I can go in upgrading the older machine. The machine is three or four years old and is a 2.8GB P4 with 512MB system memory and I imagine the graphics card is AGP. I have already upgraded it to USB2. At the moment it has a 64MB Nvidia card. Could I put a 256MB Nvidia card in or would this extra power be wasted and is the machine man enough for a big card? I do not play games and use my machines extensively for graphics such as digital photography, fractals and web design. I have a new ViewSonic 17" flat screen CRT monitor.

The machine will act as my backup and test machine and will be on a home LAN with this one sharing broadband and peripherals and using the KVM switch for monitor sharing. I may upgrade the system memory and hard drive later. Wow, we almost have a new machine!