Quote from: kerney666 on June 13, 2020, 10:00:05 AM

Quote from: thereal_kirilvvbg on June 11, 2020, 09:50:14 AM

I guess the miner feature to increase ethash support on 4GB GPUs is not working with the old Blockchain drivers (22.19.659.1)?

I honestly dont know, havent tested. The reason is that you need newer drivers anyway to maximize the epoch for 4GBs, they have an overall lower memory footprint. I believe something like >= 19.11.3 is enough, but not 100% sure where they reduced the initial vram used.

Phoenix maded some research about AMD drivers. Here his conslusions:

After extensive testing of AMD Windows drivers for the last two years or so, we identified two broad groups of drivers:

Good drivers. These are versions from 18.12.1.1 to 19.7.5 (inclusive), and from 19.12.2 to 20.4.2 (inclusive). These will allow you to mine until DAG epoch 372-373 and won't need restart of PhoenixMiner on each DAG epoch change.
Not so good drivers. These are versions 18.1.1 to 18.10.1 (inclusive), and from 19.8.1 to 19.12.1 (inclusive). This will allow you to mine until DAG epoch 365-366 and will require restart of PhoenixMiner on each DAG epoch change (for these drivers this will be preformed automatically unless you have added -dagrestart 0 command-line option to explicitly disable the auto-restart).
Drivers older than 18.1.1 were not tested for 4 GB DAG operation.

It can be useful for 4Gb cards owners.