You are correct. But what I meant is that the source of the problem was the same.
In this case, AMD wanted to keep using 6pin cable despite it not being approprite, on the 380 it just slowed it down.
On 380X, it is unstable, it still don't draw enough to melt things, but you need hackery to make the GPU useable
The 480 they outright made a GPU that used more power than the cables specs would allow, and insisted in using the same power delivery design the 380 had... Their "fix" to the issue was make patches that would just make the GPU run slow, and make it misbehave like the 380X does.
