Quote from: thameur on January 16, 2019, 02:04:14 PM

hi

is there any news for hashrate drop for R9 390 8g, is not yet set as RX 580, DAG file eat my hashrate Cry

from 33 Mh/s to 25 !!!

There give no news, DAG problem, mine a coin with lower DAG. This problem will never fix and it is very old shit. I write this 1 or 2 times a week and every day the same question.

Read this from phönixminer:

Quote from: PhoenixMiner on January 18, 2019, 01:32:28 PM

Quote from: thameur on January 15, 2019, 03:42:34 PM

Hi

have there real problems, when mines with R9 390 u. R9 390X GPU's .....
For some months, the hashrate is decreasing continuously from formerly about 33 Mhs / s to about 25.9 Mhs / s even though the R9 390 (X) of the DAG Epoch problem should not be affected at all ...
have any idea to get back 33 Mh/s
Resiste the DAG Epoch

This is caused by the size of the TLB, which is too small for the current DAG sizes and causes constant eviction from the TLB cache. AMD released the "compute mode" fix for RX4x0 and RX5x0 cards, which simply increased the memory page size. However there is no such fix for 290/390 cards. Probably there is no way to increase the page size on these cards because of hardware limitations but only AMD knows for sure. You can either mine coins with lower DAG (basically everything except ETH and ETC), or accept the hashrate drop (but it will get gradually worse over time).