TL,DR: THERE IS NO COMPARISON!!!
Holy Crap! What a difference. With the ASUS GTX 650 1GB, I was playing Medium with stuff turned off like Shadows, Blur, AA and others. Planets killed me at barely 30-32. Stations were 25-35. SC Was great unless I was close to a Landable Planet or the sun. 80-100 then the planet popped and down to 45-50.
Popped in a MSI GTX1050TI 4GB OC. Didn't play with the clocks at all. SC was 120-150. Stations are 60 and down to 50 in Outfitting. Planets are 70-80. All this on Ultra. The only drop I get is down to 55 in Outfitting and the initial SRV Deployment drops me to 50-55 till the Buggy is released from the ship and I am on the ground. Temp never went above 65C and I have now set Vsync on so it should run cooler than that.
The difference in smoothness when driving is amazing. The atmosphere in stations is unbelievable! This upgrade is so friggin worth it! If you are thinking of updating an older card, the 1050TI benches about the same as a 960 and is cheap. Even our inflated prices here in Switzerland was less than 165 CHF. That is about 50 chf more than I paid for my 650 2 years ago.
All I can say is WOW!