Just double chceking. Can u crossfire two differnet companies 4850s?

[jpbg]

Like an asus and msi?

 

[halcyon]

Yes.

 

[darkguset]

Yes,
even website reviews are based on CF of 2 HD4850's from different companies.

For example here: http://www.guru3d.com/article/amd-ati-radeon-hd-4850-review-force-3d--powercolor/

 

[crowheart27us]

yes you can. but if and when any overclocked 4870's come out the Mhz could be different depending on the model you get. example 1- you get a viziontel running at 700mhz(just guessing) and an msi running at 750,
the msi will go down to the 700mhz freq. same with the memory. 512 and a 1 gig, you'd only be able to use 1/2 of the memory from the 1 gig.