@adroc_thurston Battlemage indeed does have noticeably better perf/W and perf/mm2 improvements.
The performance is about equal to Alchemist at the same clock. So if it was at same clocks, your point would be somewhat valid. However, a new node brings ~20% improvements, and BMG clocks more than 20% higher, so based on that all the perf/W improvements on a new node should be spent on clocks, yet it does that at lower power.
27% improvement in perf/W ISO-node according to TPU results. There's no argument here, it's settled. If it sucked like ACM, then there's no way you can get 20% clock boost
plus 27% difference in power use, and this is at a card-level, not chip level.
For mm2, N5 brings ~50% density gain over N7, but ACM uses N6. N6 is 18% increased density over N7. So the density advantage of N5 over N6 is 27%, which is not enough to make up for difference in die size. ACM is 48% larger. A straight shrink of A770 would be 320mm2, or 18% larger than BMG.
Combined with the clock speed increase, a 14-20% improvement over A770, meaning
34% to 40% increased perf/mm2 ISO node. The worst case scenario if you assume N5 is 56% denser than N6(and it's not) you are still talking about 10-15% advantage in perf/mm2. And again N5 having 84% increased density over N7 doesn't happen with actual chips, maybe on Cortex A710.
I was expecting Battlemage to do better in UE5 games, but apparently it does not despite having Execute Indirect support. It's not the only engine that uses it, but it was supposed to have outsized impact.
Also Battlemage does
better in 1440p and 4K than Alchemist, and in some games noticeably so which is a surprise, as it's also a bit contrary to expectations.
This tells me there's some possibility that they could intro a driver to bring maybe ~10% improvement in 1080p. We still yet to get a driver that improves DX11 overhead either. We have it on a game by game basis, but we were supposed to have one that doesn't need whitestling like it does now.
The driver alone may tip the scales enough to counter RDNA4 and RTX 5000 series competition, and maybe they can aim it for when the competitor card launches. Also, they may need the driver because the B770 is going to be much faster and thus have more bottlenecks.
As of right now, the card is much, much better than Alchemist. The games seem stable, and the claims of improved compatibility is true. Also past is not a guarantee of future. RDNA4 and RTX 5000 still needs to execute, and even the best can falter at times.
@Win2012R2 I highly doubt N5 is $16K as you claim. 2021 is a while ago, and it does get cheaper over time, for obvious reasons. It's not a new node anymore, and initial costs would have been paid off long ago, yields improve, and the whole point of mass production lowers costs overall.