Gainward's GTX 980 Ti Golden Sample offers a 15% factory overclock that provides 11% more performance than a reference card and Zero RPM fan design. We put 2 of these against the Fury X in CrossFire.
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The R9 Fury X employs the GCN 1.2 architecture as the R9 380 but doubles the SPU count, and touts a massive memory bandwidth of 512GB/s thanks to an exciting new memory technology known as HBM.