According to LanOC, the Gigabyte GTX 1660 SUPER Gaming OC 6G is a bit of a mixed bag, but a decent performer if you can find it in stock somewhere.
The GTX 1660 super isn’t a huge change from the previous 1660, but it does have GDDR6 over the original GTX 1660’s GDDR5 and offers a rare look at what the newer memory offers for performance when everything else is the same.