Since ETH is slowly approaching 4GB DAG size and ETC already exceeded it, 4GB GPUs have troubles mining these two coins. ETC is planning a fork at block 11,700,000, which will decrease the DAG size, but since this is scheduled for the end of November, you might wonder what to do in the meantime. You can find DAG sizes of different Ethash coins and forks on our DAG size calculator and calendar.
Developer of lolMiner introduced a zombie mode, which will help 4GB GPUs mine Ethereum for a few more weeks, however, with reduced hashrate.
Zombie mode will work on Linux and Windows, but the performance has shown to be best at Linux.
Add --keepfree parameter to your lolMiner configuration. On Windows it is suggested to start with 56 and on Linux it is suggested to start with 5.
If the miner boots up, then your --keepfree parameter value is suitable or a little bit too high - but it works. You can also try to adjust --keepfree parameter to make it right. LolMiner developer suggests to decrease it for 8 Mbytes - in Linux from 5 to 0 and in Windows from 56 to 48.
If it doesn't boot up, then your --keepfree parameter value was too low, and you will need to increase it by 8. Keep doing it until, your mining client boots up.
The expected hashrates for Windows and Linux for RX 580 4GB in zombie mode are the following.
| Epoch | Linux | Windows |
| #385
29th Dec 2020
|
24.71 MH/s
82.38%
|
16.60 MH/s
55.3%
|
| #390
18th Jan 2021
|
16.62 MH/s
55.39%
|
10.73 MH/s
35.75%
|
| #395
7th Feb 2021
|
10.75 MH/s
35.82%
|
6.81 MH/s
22.69%
|
| #400
28th Feb 2021
|
6.83 MH/s
22.76%
|
4.41 MH/s
14.71%
|
The estimated dates are changing all the time and are getting closer to real date as time passes. You can find current dates in our DAG size calculator and calendar.