AMD cards
#1
Bug 
Hello, I have 2 video cards( 6520G (512Mb) and 6750M (1024Mb) ). Hashcat defines them as (Device #1: BeaverCreek, 256MB, 400Mhz, 4MCU; Device #2: Turks, 512MB, 400Mhz, 6MCU ). How to make so that the cards were used to the full?
#2
depends on the hash that you are cracking. for wpa2, -u 128 and -n 16 should work. see: https://hashcat.net/wiki/doku.php?id=oclhashcat_plus