Doing charity work for my baby sister, so please lend a hand
She's got a relatively new desktop, but the video chip is a NVIDIA GeForce 6150SE nForce 430, which seems pretty stale. I'd like to get her something newish to improve her gaming capabilities (Sims 3 is unplayable for her), so any suggestions?
Take a look at the HD4670. It's usually a good choice for pre-built systems since it has very low power requirements which don't usually need a swap of the power supply. It gives decent performance in games and it's fairly low cost. A HD4650 may also be an option.
It's a pretty new HP with a medium tower, though I don't have access to it in person. I think it's relatively pimped - 5 GB ram (don't know how good, though), 3 Ghz dual core, etc. The choppiness at high res makes me think that the video card, or lack thereof, is the limiting factor.