I know that AMD doesn't have to get Intel or nVidia on board. I know they got developers on board. I've said that. But YOU have to realize that AMD only holds a 30% market share in the PC desktop video card market share. Do you HONESTLY think that those developers will make a "Mantle Only" game and cut out 70% of the their potential buyers? Heck, do you think that those same developers will even just say "You know, Mantle is great and NVPAI and DirectX suck, so I won't make my game good for 70% of the buyers."? Really?
The reason why I want Mantle to support Intel and nVidia is because I *HATE* Microsoft.
This is a quote from this article
It saids that Mantel can unlock performance even for not GCN architecture. Only GCN will have more benefit. So that means Intel and Nvidea will get a boost. If you don't wont to use Mantel you can run you game on DX. No sane developer will make game only based on Mantel without DX support and kicking about 70% of the market out.