I have a Vive (Pre) and tested it on some older equipment. Less demanding apps like Tilt Brush will even work on older cards like the 750 Ti, but >50% of the a

I have a Vive (Pre) and tested it on some older equipment. Less demanding apps like Tilt Brush will even work on older cards like the 750 Ti, but >50% of the available demos so far won't run at that level. A 950 is much faster and not too far from a 680 though, and Valve is working on lowering the performance requirements and made their portal demo work at 90fps at that level. They are going to be giving a talk at GDC in a couple weeks about their rendering technology to dynamically adjust quality settings to maintain FPS on lower cards, which they will be integrating into Unity so most developers will have access to it. Anyway, I think it would probably be OK to order it now and expect to have access to a reasonable percent of the content, and then wait a few months to upgrade the GPU when the next gen from AMD and Nvidia comes out.