The Palit 750ti basically ties the 265 performance-wise with a 1202 MHz GPU clock. It's working really well in my HTPC. I found the mini-HDMI output a little odd though...
http://www.techpowerup.com/reviews/Palit/GTX_750_Ti_StormX_Dual/25.html
I have an HD 7850 2GB OC'd to the max Overdrive can do (1050/1450). I just received last week (and sent back) a PNY GTX 750 Ti OC. Its stock factory overclock is 1202 Mhz. Overclocked to 1292/1550 it was about 10% slower than the HD 7850 OC'd (which is basically an R7 265 without boost). Neat little card, but the AMD was definitely better in gaming.