That's how I see as well. Many people point to Alder Lake as a proof that x86 can still improve, but I don't really see this. Golden Cove was a massive core redesign with a radically wider frontend and OOE depth, and yet the IPC improvements remained fairly mediocre. I am not confident they can deliver systematic improvements on this path. And sure, Alder Lake has a massively better parallel throughput, but that is achieved by side-stepping the issue and throwing many low-performance, low-power cores at the problem rather than real baseline improvements. It is an engineering achievement, no questions, I am not just confident that it is scalable.
As I see it alder lake got all this at massive peak power draw - if you limit it to say 100 watts max the improvement over skylake looks far less impressive.
Never mind that there is supposedly (intel marketing aside) at least 2-4 process improvements there as well.
Which is it intel? No node improvements or does your “improved” design really suck that bad?
You can’t have it both ways.
It looks even worse if you go back to say, sandy bridge which was on
32nm. Sure there are improvements but on that many process node improvements, for how much performance per watt change??
Re the only performant arm designs being closed… show me where I can say, obtain a reference design for alder lake…
The only reason there aren’t more performant arm designs so far is that nobody has attempted to take on the pc market with one before because the barrier to entry is so high.
Apple is literally the only player who could do it because they have an existing software stack with enough customers and a massive bank balance.
Even AMD were nearly killed trying to take on intel - without having to shift potential customers to a new ISA (largely due to intels illegal business practices) and this is their core market.