Even 6gb vram won't be enough very soon, ETHpow will start where ETH left off so don't expect any lower DAG size, if you want to invest in any graphic cards its better to buy those with 8GB vram memory.
Before you invest in any 8gb cards you should at least see what happens with ETHPOW. It could be a big flop and could be completely dead in 3 months. Even if it’s not dead then the profits will be horrible because at current valuations of $40 a coin. It will have a very small miner reward.
I'll write some figures for reflection
Now Ethereum gives more than $10,000,000, Ethereum Classic about $600,000 in income for miners.
After the end of ethereum mining
ethereum classic will give $600,000 and new ETHPOW will give miners the same if prices don't fall. Profit falls very much, and this is a problem.
Yeah a huge amount of income is about to be shut off.
It should shock all of crypto to the core.
Mr V. B. is going to need very good security very soon.