Nvidia GTX 750 and GTX 750 Ti is spotted in the wild, however until now not many hard evidence was spotted about the cards. According the reports, the pictures of the cards are made by AIC, which would either be Palit or Galaxy.
The card’s specifications point out that it uses GM107 core. Its been known that GTX 750 Ti will be a 2GB variant, whereas GTX 750 will be a 1GB version. One of the UK based tech publication has both of these cards, who also posted GPU-Z screenshots of these cards. According to the screenshots, the GTX 750 Ti will have 1085 MHz core clock speed with up to 1163 MHz via GPU boost, followed by a 5.50 GHz GDDR5 memory. The GTX 750 has the same clock speed, but memory is clocked at 5.10 GHz.
UK Gaming Computers also have put up3DMark 11 benchmarks (later the article was taken down) with performance preset, which shows that GTX Ti made a score of 5963, whereas GTX 750 made a score of 5250 points. WCCFTech posted the following the images: