3DMark
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 difficult to explain why the Cloud Gate score is comfortably lower than a stock-clocked card's, but, more importantly, the GPU-intensive Fire Strike test is just where it should be.