Yes your 7070 mt with stock 260w psu can support 1050ti.  User benchmark has 74 users validated this gpu in 7070. [URL] no advantage and only potential downside to install 3200 mhz in 7070. If pc boots w 3200, bios will downclock it to 2666.  there is a possibility that pc may not POST w 3200 too because bios detects a memory faster than 2666.
Hi! so i want to upgrade my dell optiplex 7070 MT and found on youtube that they use gtx 1050 because it don't need psu upgrade but i want gtx 1050 ti if it also work as the performance is better. so my question is can i use gtx 1050 ti on my dell optiplex 7070 MT without psu upgrade? also can i use a 2x8 DDR4 3200 MHz ram or only 2666 MHz one?
Dell Optiplex 7070 MT With GTX 1050 Ti and 3200 MHz DDR4 Ram