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AkirIkasu t1_iys6fy9 wrote

Reply to comment by Cindexxx in StableDiffusion can generate an image on Apple Silicon Macs in under 18 seconds, thanks to new optimizations in macOS 13.1 by Avieshek

Perhaps? The M1 Ultra is basically two M1 chips glued together with a bunch of extra GPU cores.

There isn't an M2 Ultra right now, but it's probably only a matter of time until that gets released.

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Eggsaladprincess t1_iysrcum wrote

I think M1 Max is basically 2 M1 chips and M1 Ultra is basically 4 M1 chips

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StrangeCurry1 t1_iyvgj5g wrote

The M1 Max is an M1 Pro with extra Gpu cores

The M1 Ultra is 2 M1 Max’s

The Mac Pro is expected to have a chip made of 2 M1 Ultras

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Cindexxx t1_iysxx32 wrote

Isn't that going to limit the single core to being not much higher than the original M1? Maybe with more power and cooling they can crank it up a bit, but it seems like that's the limit.

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Eggsaladprincess t1_iyt5x7v wrote

Not really sure what you're saying. Single core is pretty consistent between M1 to M1 Ultra

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Cindexxx t1_iyt65ou wrote

Yeah, talking about the pro line. If they're stuck at M1 single core speeds at desktop level it'll suck for certain applications.

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Nicebutdimbo t1_iyux4n3 wrote

Err the single core performance of the M1 chips is very high, I think when they were released they were the most powerful single cores available.

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Eggsaladprincess t1_iytmifw wrote

Hm, I don't see it that was at all.

If we look at how Intel chips scale, we see that single core performance actually decreases on the largest chips. That's why historically the Xeon Mac Pro would actually have a lower single core performance than the similar generation i5 or i7.

Of course the Xeon would more than make up for it by having tons of cores, more PCIe lanes, support for ECC RAM, etc.

I think it would be fantastic if the M1 Supermega or whatever they end up calling the Mac Pro chip matches the M1 single core performance.

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