Paul, I think you're underestimating it.
No, I´m not. I said 1.5% "on average". Let me give you a hypothetical, generalized breakdown of what performance increase you´ll see by moving A64 from single to dual channel (and nothing else):
business apps: 0%
3d rendering : 0%
data compression: 0%
video/audio encoding: 0-2%
gaming: 2-4%
That´s what you´re typically going to see. I am of course leaving out the synthetic benchmarks here that some reviewers count just like a real world applications to determine a "winner" - differences here will be huge in some cases.
However, there will be more improvements coming with S939:
For A64 FX: faster and cheaper RAM, cheaper boards
In general, S939 boards will be the "second generation" already, with more mature, improved (or should I rather say "fixed" in some cases [hello NVDA]), and more finely tuned designs, using faster aHT. I expect all these factors together to add more performance than the move from single to dual channel. But it´s in addition to that...
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