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So M1 Max with 32 Core GPU matches RTX 3080 Mobile.

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JimmyjamesEU

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Jun 28, 2018
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ElfinHilon said:
Yeah, that's what I am personally leaning towards. I'm confused as to why the 32core would see such terrible scaling in relation to the rest.

Yep, good point. I'm honestly thinking we are looking at the 24 core here. It's possible this is also just extremely poor scaling for OpenCL or something.

My guess would be something with the different core complexes or another. I'm not an engineer, so I'm just making educated guesses here. All I know, is that OpenCL doesn't do too great for Macs.
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I think you’re on to something. I’m not an expert here either, but I can’t see how it could scale well from 8 to 16, but then suddenly halve for the next 16. It doesn’t make sense. Those published scores must be for the 24 core.
 
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ElfinHilon

macrumors regular
May 18, 2012
142
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JimmyjamesEU said:
I think you’re on to something. I’m not an expert here either, but I can’t see how it could scale well from 8 to 16, but then suddenly halve for the next 16. It doesn’t make sense. Those published scores must be for the 24 core.
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I wouldn't say that MUST be, but I'd be quite shocked if it is for the 32 core, and the 32 score has performance to match that.
 
mi7chy

mi7chy

macrumors G4
Oct 24, 2014
10,625
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JimmyjamesEU said:
I think you’re on to something. I’m not an expert here either, but I can’t see how it could scale well from 8 to 16, but then suddenly halve for the next 16. It doesn’t make sense. Those published scores must be for the 24 core.
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Maybe it's a bottleneck somewhere like possibly memory. Companies usually leak and showcase their best.
 
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jeanlain

macrumors 68020
Mar 14, 2009
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Max tech found that the 16" model with the M1 Max is heavier than with the M1 Pro, but the weight of the 14" model stays the same. It could be that the M1 Max in the 14" model is thermally constrained by cooling capacity.
 
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crazy dave

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Sep 9, 2010
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jeanlain said:
Max tech found that the 16" model with the M1 Max is heavier than with the M1 Pro, but the weight of the 14" model stays the same. It could be that the M1 Max in the 14" model is thermally constrained by cooling capacity.
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Possibly, but many of these benchmarks measure peak rather than sustained performance unless you deliberately run the device for awhile before running the benchmark.
 
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ElfinHilon

macrumors regular
May 18, 2012
142
48
jeanlain said:
Max tech found that the 16" model with the M1 Max is heavier than with the M1 Pro, but the weight of the 14" model stays the same. It could be that the M1 Max in the 14" model is thermally constrained by cooling capacity.
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Probably not. Geekbench doesnt last long enough for the thermals to become an issue, unless you chain run them back to back.
 
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ElfinHilon

macrumors regular
May 18, 2012
142
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JimmyjamesEU said:
Hmmm. We’ll see. Cpus not scaling linearly is well known. Gpus generally do better afaik.
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Yeah, thats certainly true. And to be clear here, Apples CPU isn't the same as the chiplets AMD uses. I really don't know whats going on, just hunches/guesses :p
 
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crazy dave

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Sep 9, 2010
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ElfinHilon said:
I suspect it has to do with core layouts. AMD had the same issues with their CPUs.
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CPU and GPU scaling are in general very different. Having said that it is still possible that scaling will be screwed up with the Max chip for similar reasons: The Max GPU does look like two GPUs tied together with some shared logic (if the die shots are accurate here). Depending on what that’s like, scaling issues in some workloads could happen. Maybe. I could make an argument for it anyway. ?
 
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UBS28

macrumors 68030
Oct 2, 2012
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ElfinHilon said:
Even further, we know that the 5600M is supposed to be about par with the 16 core GPU. I guess we will have to wait and see what happens with the benchmarks. This is only one benchmark, so I wouldn't hold too much wait in it, but the more and more I look into figures directly provided by Apple, I think this is the 24 core GPU just being miss-labeled in Geekbench.

EDIT: Alternatively, we could be actually looking at the 32core GPU, but it just doesn't scale well for the M1 Max due the depreciated graphics API being used here. That's also entirely possible. However, if we are indeed looking at the 24core here, oh boy this is gonna be a wild ride.
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The laptops with the RTX 3070 that got over 125k were also running depreciated OpenCL?
 
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crazy dave

macrumors 65816
Sep 9, 2010
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UBS28 said:
The laptops with the RTX 3070 that got over 125k were also running depreciated OpenCL?
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Ironically given the history of the two companies, Apple has deprecated OpenCL while Nvidia recently expanded support for it. I guess they figured they killed it enough that it isn’t a threat anymore. ?
 
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