I would like to get the ATI Radeon HD 4670. I’m not much for gears of war type games but I do want to play Tomb Raider Underworld.

My desktop is a two year old Dell, I have three years left on the warranty – it’s been an awesome computer, absolutely no problems that are hardware related. Here are the specs:
current graphics card nVidia GeForce 7300 LE
Processor Intel Core CPU 6300@ 1.86GHz
32 bit Vista OS
has a 3.2 Window Experience Rating.
2GB RAM

I downloaded cpu-z and got this information, I don’t know what it means though:
Motherboard
Manufacturer: Dell Inc
Model: 0WG855
Chipset: Intel P965/G965 Rev: 2
Southbridge: Intel 8280IHH (ICH8DH)
LPCIO: SMSC