Feasibility of Radeon 7970 6GB?

[Juggar]

I have the chance to get some Radeon 7970 cards with 6 GB of VRAM for about $50 a card.

That being said, they are GCN 1.0 and thus subject to the memory controller thrashing with the ethereum dag size issue.

Would the 6GB of VRAM alleviate that to some degree? I tried looking up info on the R9 270X 4GB (GCN 1.0 as well) and found nothing recent regarding their increased memory size in relation to the current DAG.

I can not commit to buying them if I do not know what they can do with more VRAM. Of course, they could mine Zcash and that may be what I do, since it is still very profitable.

[0xcosmos]

for a 50usd per card
this could get you break even in a month or so if your electricity prices are economical
i think so eth is still mineable from cards above 2 gb vram

[sundownz]

Also keep in mind they will do well on Monero too. I have a few older cards and they do nicely.

[QuintLeo]

They're the same GPU as the R9 280x - not great ETH cards but will work, fairly good ZEC cards.

 If your electric cost is low enough they should be solidly profitable.

 The amount of VRAM has no effect on the memory controller "thrashing" issue - but the wider memory BUS makes them less effected by it as well, even without the "blockchain" drivers.

 They also have a great future as workers in the BOINC "Milkyway" project (and can earn decent GRC that way) since they have very high FP64 performance for a non-workstation-specific card.

 Where are you getting these for $50/card???