Thanks, presumably we'll see the new Mac's there in a few days. BTW: the old streams benchmark page should point to this site; google is worthless. I get 24 on my Intel MacBook Pro and it also saturates with 1 core. Barry

On Oct 18, 2021, at 4:48 PM, Jed Brown <[email protected]> wrote:

I don't have one, but this suggests it gets about 40 GB/s and can be saturated by a single core. I believe it uses two channels of LPDDR4X-4266, which has a theoretical peak of 68 GB/s.

https://browser.geekbench.com/v3/cpu/8931693

The press release claims up to 400 GB/s on the Max using DDR5. I assume that's calculated based on 8 channels of LPDDR5-6400, which seems like a surprisingly big step and I'm skeptical of what will actually be realized.

Barry Smith <[email protected]> writes:

...

Can anyone who owns an Apple M1 system run the MPI streams benchmark? Make sure the -O3 (or something) optimization flags are turned on.

Thanks

Barry