KitGuru tried the Sapphire R9 290X Vapor X 8GB CF
A quote from the article:
Today we finally get the chance to look at Sapphire's R9 290X Vapor X 8GB graphics card. Prices of Ultra HD 4k screens may have dropped in price recently ? but sadly this is only part of the overall cost. Driving smooth frames at 3,840×2,160 places a very intense demand on the system ? particularly the graphics card. Even current generation cards such as Nvidia's GTX980 struggle in single formation. Today's article focuses on Sapphire's new 290X 8GB Vapor X cards in Crossfire against a selection of other high end hardware running in Crossfire and SLI.Sapphire R9 290X Vapor X 8GB CF Review @ KitGuru