Yes, you can mine Ethereum Classic with 4GB GPU. Here are some things to keep in mind:
-The DAG size will continue to increase as the network grows. This will eventually lead to 4GB GPUs becoming unable to mine Ethereum Classic.
NOTE: Warning: Mining Ethereum Classic (ETC) with a 4GB GPU is not recommended. This is because the 4GB GPU may not have enough memory to handle the hashing algorithms required for ETC mining. Additionally, 4GB GPUs are typically not powerful enough to generate a meaningful amount of ETC even if they are able to mine it. Therefore, it is best to use an 8GB or higher GPU for mining ETC.
-4GB GPUs can still mine other cryptocurrencies that do not have the same DAG size issue.
-There are currently no plans to change the Ethereum Classic mining algorithm, meaning 4GB GPUs will become obsolete for mining this specific cryptocurrency. .
In conclusion, while you can currently mine Ethereum Classic with 4GB GPUs, this will not be possible for much longer as the DAG size continues to increase. 4GB GPUs can still be used to mine other cryptocurrencies that do not have the same issue.