I didn't see any good video card related news this week, so instead you are getting some articles that I think are worth the read.
First up are two video card reviews from [H]ard|OCP. The MSI GTX 980 Ti Lightning is an amazing overclocker and it comes with a 2nd BIOS that is designed to be used with liquid nitrogen cooling. The PowerColor Devil 13 Dual Core R9 390 is one of those custom video cards that is powered by two GPUs.
Last (and probably least) an article from IGN about those new fangled Steam machines.