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.
We know Palit's card boosts to an average core speed of 1,366MHz when gaming, beating out the prescribed clock by a good 62MHz. And it's increases in core frequencies that separate most GTX 970 cards; the memory, for most, rests at 7,012MHz. This small-ish card, albeit overclocked, bests the reference Radeon R9 290X.
GTX 970 has relatively low texturing performance but solid colour fillrate. The latter is made possible by advances in memory-compression technology.