Hello there,
For the differences other than the Clocks on the FTW3, the FTW3 Ultra, and the XC2 Ultra.
For starters, our FTW series cards have a custom built PCBs, with a cleaner and better power delivery that can help with performance and overclock capability.
The other thing in comparison would be the fans. All, of the 3 cards have a 3 slot design.
The two FTW3 cards have 3 Asynchronous fans and the XC Ultra has only two.
The other big difference would be the ICX 2 Sensors, The FTW3 Ultra and the XC2 Ultra have the ICX2 sensors that help you monitor different parts of the card in Precision X 1.
All three cards have 2 8-Pin power connectors.
In regards to looks, the two FTW3s look near identical. And the XC being a smaller card and only two fans.
They all Have RGB and the same Display ports.
The clocks if you or anyone was wondering are as follows.
FTW3 Ultra (11G-P4-2487-KR) 1755 MHz Boost Clock
https://www.evga.com/products/Specs/GPU.aspx?pn=f5fc9cf7-6b66-45ae-aaaa-3848a66a8d5fFTW3 Ultra (11G-P4-2483-KR) 1545 MHz Boost Clock
https://www.evga.com/products/Specs/GPU.aspx?pn=7c275a53-bd1d-476b-b0ae-a6a04ed573c6XC2 Ultra (1G-P4-2387-KR) 1650 MHz Boost Clock
https://www.evga.com/products/Specs/GPU.aspx?pn=59cb910c-f083-4da7-977c-87ee44dff707 Overall all 3 of the cards are a good choice for the 2080 Ti,
Hoped this helped you make a choice.
Regards,
Robert - EVGA