if eth goes pos every gpu will be useless, but to be more safe in future for other coins/algos go for 8gb
lol you really think itll go POS soon? i dont think the devs have even figured it out yet. theyre just dangling that pos carrot, so that an asic manufacturer doesnt put in R&D and annihilate difficulty. i also strongly believe that when eth tries to go POS, there will be another fork for POS eth and POW eth on the current chain. then we'll have etc ethpos and ethpow. people will hate on me for this, but im extremely bullish on etc. maybe ill make a post in the speculation section as to why.
i dont give a fuck what eth does because i dont mine it, only retards mine eth. its much cheaper/more effectiv to mine other stuff, sell for btc and buy eth if you want