I was a bit bored tonight, so I updated BIOS to F10 from F6 on my R2 DS3: I've tried all the others with lackluster results except F6, which has allowed me max OC of 485, 1:1, 5, 5, 5, 15 with memory VMEM at +.4: always stable, 24/7 or off at night. No cold boot or unusual behavior.
Running...