I have an A10 7850K in an A88XM-A motherboard. it has never worked in dual channel memory since I've purchased it at end 2013 / early 2014. My memory is 2X4GB of Corsair and 2X4GB of Gskill (both 1600, only 2 slots filled and one type in the machine at a time). Both are match of QVL except maybe 2nd to last or 1 extra character on the end. When loading OS in dual channel i get something like data corrupt or missing. it works great in single channel. BIOS is up to 29 now (i'm at that version, but last version I tried dual channel on was 24), it started back below 10. At first I thought the issue was with the hard drive or CD/DVD drive (replaced both early on). But when I put in the Gskill memory with the same error as corsair I've sort of defaulted back to the motherboard. Any ideas, I'm thinking of buying like 2133 or 1866 that matches QVL perfectly, and if it doesn't work dual just getting that many more MB/second of speed in single channel. other option is to try another motherboard.