Question 1

Hey, would this work with 2 EVGA GTX 770s?

Accepted Answer

Negative. Evga is an nvidia card and nvidia are linked together by "SLI" and ATI cards are linked with crossfire bridge like the one you asked the question about. I would recommend this http://www.newegg.com/Product/Product.aspx?Item=N82E16814998076

Question 2

Would this work with two XFX Radeon HD 7700?

Accepted Answer

You would need to check the Radeon web site to be sure, but it should work as long as the cards are identical and have the crossfire pro capabality.

I am running two AMD FirePro V7900 (FireGl V) with no issues.

Question 3

Can this work with 2 MSI R9 270(non X version graphic card)?

Accepted Answer

I'm using two of these for a pair HD6700 series cards.

If your cards require a CrossFire bridge, this will work.  The part is packaged by XFX but will work for any other card requiring the bridge.

Questions & Answers