The AMD Radeon R9 280 series is basically a re-branded Radeon HD 7950 with a few tweaks. Powered by a single 28nm Tahiti XTL GPU, it features 1792 Stream processors running at 850MHz with a boost to 940Mhz. The AMD Radeon R9 2xx series has been out since October 2013, and we are continuing to see new versions of the R9 200 series. The AMD Radeon R9 280 series is basically a re-branded Radeon HD 7950 with a few tweaks. Powered by a single 28nm Tahiti XTL GPU, it features 1792 Stream processors running at 850MHz with a boost to 940Mhz. The AMD Radeon R9 280 reference card has its core clocked at 827MHz base clock and 933MHz boost, so this particular card has a small overclock already done to it. Read on to see how it performs!