Thirtybird: did you mention the new AMD GPUs?

I only just found out about these today when researching to find out what AMDs answer to HMC is.

The AMD R9 300 series with High-Bandwidth Memory (HBM)

My understanding is that these are only recently released and probably not tested with Yacoin yet. I might be able to run one of these in my current machine.
I would very well buy it for gaming and VR anyway but could also use it to mine some YAC.