Tested and it's working, ~15+Mh/s.
What I do not understand the difference .? my 370 nitro gives 14.4Mh 1180 \ 1500 . I see no reason to pick bios .There you said it all.. 1180 core!
Dunno if you noticed but my rom does around 15 at core 1080 (so -100 on your core)..
Did you release a 2GB R7 370 BIOS yet?