Okay maybe i could of been clearer as i meant 2 different manufactures as in an AMD and Nvidia card can't sli/crossfire together. I am well aware that an Asus and XFX can sli together.
As for being an AMD fan i think you assumed that from my build. The FX8320 was cheaper by £60 to the intel CPU i considered buying.
As for my AMD graphics card it was the best performance/price ratio at the time i got it on sale.
Before i had my 7850 i had an AMD 6850. In the years before that all my graphics cards have been Nvidia all the way back to my Geforce 2mx with 64mb of memory
I have an AMD build but do not consider myself a fan. My next build might be an Intel/Nvidia combination