3DMark
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3DMark is the latest version of this hugely-popular synthetic benchmark. Making use of DX11 features such as tessellation, compute shaders and multi-threading, it provides modern-day results and is available as a free download.
It's worth repeating that all three cards are clocked in at 1,075MHz core, while Sapphire's is the only one running faster-than-default memory - 6,400MHz vs. 6,000MHz. Memory bandwidth isn't the performance inhibitor that one might expect in 3DMark, with the trio of pre-overclocked cards benchmarking in very close proximity to one another.
