- Edited
Don't hold your breath for the A770.
I have been meaning to talk about ARC cards - I find all ARC implementations to be among the best for my eyes of all modern chips. And the LE implementations are the best of the ARC - for me at least, with a small sample size. I have two cards currently: A770 Challenger 16GB ASROCk, and A750 LE Intel. I find the Intel card a little better, but within the margin of "I want it to be better" error.
My B580 is on backorder, most of them are. I'll have an LE in January to test.