>Make that 4 instead of 2. OS4 jumped straight to GCN4 from GCN1, skipping GCN2 and GCN3.

I rather liked GCN1 myself.
GCN2, since my only experience with that was an R7 260X, was a bit of a disappointment.

I believe Mark has a representatives of GCN 1, 2, 3, and 4.

I'd just like to be able to use a Radeon 7770.

Although...an RX580 would be nice.
I believe Mark mentioned owning an RX570, so GCN4 support is not an impossibility.

Addendum: As Navi is apparently GCN derived, that would make it GCN5 wouldn't it (as Radeon VII appears to just be GCN4 on steriods).

We haven't even ventured into GCN support, and the last GCN generation is due to be launched this year.

Modern video card support, improved OpenGL support, SMP, and memory protection.
All of which could be started on our higher end PPC systems, but are a must for an X64 variant.

[ Edited by Jim 20.05.2019 - 23:30 ]