PROGPOW USES THE SAME DAG FILE AS THE CURRENT DAG FILE--
For ETH mining, the DAG file will be unchanged even if the Ethereum project switches to ProgPoW. ProgPoW was derived from the ETH algorithm, and the DAG file will be continued if and when ProgPoW becomes the ETH algorithm after an approved fork. --scryptr
You will be able to run 4gb cards on eth using linux approx to the end of this year, but we are waiting for the prognpow right? So there will be some changes regarding those news
And the 4gb cards at the end of the mining era on eth will be able to mine some other algo, so, Im not worried at all
I wish Mr @Claymore make best ProgPow miner )