First off, sorry if this is answered elsewhere, but I'm a little confused about DX10 and Vista. I had thought that to run a game with DX10, you simply needed a DX10 compatible GPU, and Vista wasn't necessary.
In looking at performance comparisons, I'm reluctant to switch to Vista (will probably wait for a service pack, if that) and driver updates for GPUs. But if it's not necessary to play DX10 games, that will put off my purchase even further.
Am I on the right track here? Or way off?
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You need Vista to run DX10 itself. And to run a DX10 game, with DX10 capabilities, you need Vista, with a DX10 card like a 8800.
You can run a DX10 GPU on XP and DX9, as it will run in DX9 mode.
First "DX10" games will most likely run both in DX10 and DX9.
Thanks, that's what I was afraid of. Oh well, looks like I need to save some more money.