Sapphire 7990 bitcoin

1 GHz 8 GBMSI Radeon R9 390X Gaming 1. 1 GHz 8 GBSapphire Radeon R9 390X 1. Sapphire 7990 bitcoin noise is acceptable with 40 dBA, but far from what we’ve seen on custom-design GTX 980 cards which are almost inaudible during even full-on gaming.