Hi leuanash,
VM are selling both the galaxy-s20-fe and the s20-fe-5g
The 5G version has the Qualcomm Snapdragon 865 processor (see below comparison screenshot)
I don't know where they they get the 12gb of ram. Both mobiles have 128gb of internal storage, but will either have 6gb or 8gb of ram
Checking this page on gsmarena gives the specs breakdown on the 5G version.
Glancing at the gsmarena 5G review they say, "The Fan Edition also tops out at 8GB of RAM (6GB in the base version), while the regular S20s start at 8GB and can be had even with 12GB."
EDIT - forgot the screenshot.

Dave
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali