With ML due soon, I'm thinking it's time to retire my 1,1 as a Mac and convert it into a Windows-only gaming box. Though with the lack of PCIe 2.0, I'm starting to question if this is worth it. Has anyone tried sticking a high-end Radeon 7000 or GeForce 600 series into their 1,1? Are there significant performance limitations based on the aforementioned? Bear in mind I only care about Windows at this stage, so I'm aware that half the cards may not necessarily work in Mac OS and that does not bother me.