[strikermed]

I'm wanting to upgrade my video card to a Radeon HD 6970. I know I can do it right now with my current rig, what I am looking into is whether I will have bottelnecks with my current system, and How I can prevent bottlenecks when I build a new system and look to run crossfire with the HD6970's.

First: Here is the card I'm lookign at: http://www.newegg.co...N82E16814150531

Second here are 2 ideal mobo upgrades: http://www.newegg.co...N82E16813131636
http://www.newegg.co...N82E16813131655

What I'm asking for is what should i look for in a mobo (I've noticed some mention dual 16x and 8x, and some just don't mention that at all) Also I'm want to know what speed ram I should get to prevent any bottle necks.

In addition to all of this, I'm wondering if I should wait for an 8 core processor and keep my amd quad core 3.2? And what socket type do you think the 8 core are going to be? I ran into a socket change when I upgraded from a dual core to quad core, so I'm wondering if they will do the same for 8 cores?

Aside from that here is my system:
Antec nine hundred case
XFX 750 Power supply SLI compatible
Asus M478A Pro Mobo
AMD Phenom X2 3.2ghz cpu
Corsair 8gb 4X2gb DDR2 1066
1TB WD hardrive sata
128GB WD SSD hardrive SATA
Silverstone HDD Boost SATA
Radeon XFX HD4890