Direct X 11: is it worth the wait?

if you need faster now then buy now. I have been always on the edge of upgrading then somehting new comes out. PCI-e 3.0 will probably be needed to take advantage of DX11 so it won't just be a video card, it will be new mobo and new memory probably. I was actually looking to upgrade from my 7800GTX sli too a second hand 3870x2, is that card slow now?

DX10 brought faster cards, as has every other dx release, you can debate whether cards would be as fast as they are through natural progression or by what is wrangled out of the dx standards discussions between MS and co.

DX 10/10.1 will not be fully compatible with DX 11. DX 10.1 would be more compatible but it will not allow full DX 11 features.

DX 10/10.1 could be obsolete within only 5 months and it will not allow you to use full DX 11 features. However, DX 10/10.1 cards will still allow you to play the future games but it will still be in DX 10 mode, thus, it is like you are stuck in time with DX 10 and you are playing another DX 10 games rather than playing DX 11 games. If you wanna play Full DX 11 games then you still need DX 11 video card.

If you already have a DX 10.1 card like HD 3870 X2 OC then it would worth to wait for DX 11 card.

Actually I am still using Geforce 8400M (of my notebook PC) without any problem and I am delaying my PC rig build until DX 11 is release. Also, DX 11 beta and Windows 7 beta are already released and Microsoft sent technical preview of DX 11 to ATI and NVIDIA since last November of 2008. So DX 11 video cards could be release at any moment without warning.