I have 2 x Sapphire RX 480 Nitro+ OC 8GB, and one of them gives 3-4 memory errors per day (ethereum mining workload), at stock memory clocks. I even have the feeling that the error rate is lower at 2050 MHz, than at 2000.
The other goes happily to 2250 without errors for days, but with a catch: in must be put at 100% load at stock clocks, and then, manually set in wattman, to 2250 MHz. After 24-48 hours, suddenly, it starts giving errors, in the low hundreds per hour, until the GPU returns to idle, after that, it keeps giving zero errors at 2250 for days again.
Is it normal in this scenario to get errors at stock, even if they are a very small amount? Can a modded bios loose memory timings enough to get zero errors and still be gaining performance? What modification is needed in memory timings? Thanks.