We review the fastest card available, the Palit GeForce GTX 750 Ti StormX Dual. Palit's offering is the fastest GTX 750 Ti we have seen to date as it has been factory overclocked intensely on the GPU ... Palit GeForce GTX 750 Ti StormX Dual review
Maxwell is the most impressive thing on TDP. and it 28nm, 20nm high end Maxwell Fermi++ compute to come(hopefully).
I think zotac has the fastest 750 card out but maybe only in china 1320+ boost Just ordered a evga card 1268 boost(6pin) now to see if I can get some voltage and cooling to see what it does