AMD Radeon R9 290X CrossFire Review | techPowerUp
n this review, we put CrossFireX configurations with two Radeon R9 290X graphics cards to the test. Since the R9 290X comes with two BIOS modes, “Uber” (high-performance) and “Quiet,” we treated CrossFireX configurations with cards running the two as distinct data points. You’ll find the “R9 290X CrossFire Uber”, with both cards running the “Uber” BIOS, and “R9 290X CrossFire Quiet”, with both cards running the “Quiet” BIOS, pitted against a single R9 290X and other high-end graphics solutions. A hybrid configuration of “Uber” and “Quiet” R9 290X is possible, although we found it to perform too inconsistently to include in the review.
via AMD Radeon R9 290X CrossFire Review | techPowerUp.