Hello, I'm going to buy the A8-370K Processor and use it with the F1A75-I DELUXE motherboard by ASUS. My main question is with this setup, can I use the CrossfireX dual mode with any discrete video card? I wanted to use it with the AMD Radeon HD 6850. Would this be possible? Could I use it with an even better video card than that? And how much extra performance would I get from it? Thank you!

There are three and they are :

HD 6670
HD 6570
HD 6450

I have the A8-3850 and the HD6670 in an Gigabyte SKT-FM1 A75-UD4H MoBo and Win 7 64bit, but I have NOT been able to get them to play nice with each other !

In fact my win 7 score went DOWN considerably when I used them in 'linked / crossfire' mode I tried the latest driver right back to 10.1 and still could not get it work ?