Recommended System Requirements
 

I've finally been going through my backlog of TTG and have been playing them on an old PC we converted to be an HTPC, so I could play them on a big screen. I know the system doesn't quite meet the posted system requirements,

✓ : CPU - AMD Athlon 64 3500+
X : GPU - GeForce 7600 (256MB vRAM)
✓ : RAM - 4 GB

but overall they are playing well, assuming I keep shadows, effects, etc at a low setting. If I want full settings at 1920x1080, do I just need to upgrade my graphics card, or do I need to give the whole computer a long overdue overhaul?