What you most likely are going to need is an HDMI 1.4-capable GPU such as the NVIDIA GT 430 if you expect to play 3D Blu-ray discs and other frame-packed sequential 3D source material. I can verify that the GT 430 is fully capable of 3D BD playback using HDMI 1.4. You can also check out Andrew’s review of the GTS 450.
If the source material is frame-compatible, e.g.side-by-side, then you can use your existing GPU. Broadcast 3D like ESPN 3D is currently using frame-compatible.
