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.
An examination of the GFLOPS and memory-bandwidth throughput of the GTX 750 Ti and GTX 650 Ti - both at around 1.4TFLOPS and 86.4GB/s, respectively - suggests that both GPUs should benchmark at about the same level.
Significant efficiency and scheduling improvements in the Maxwell architecture make its 640 Cuda cores perform like 960 from the previous-generation Kepler, however. We can empirically confirm this by seeing how close the 640-shader GTX 750 Ti and 768-core GTX 650 Ti Boost perform against one other, even though the latter GPU has a 66 per cent memory-bandwidth advantage.
Factoring in pricing reveals that AMD's $149 Radeon R7 265 - an enhanced version of the Radeon HD 7850 - is much faster. It is the only current sub-$150 equipped with a 256-bit memory bus.
