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Apple Silicon M1 chip in MacBook Air outperforms high-end 16-inch MacBook Pro

(www.macrumors.com)
1080 points antipaul | 2 comments | 12 Nov 20 00:56 UTC | HN request time: 0.001s | source
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andy_threos_io ◴[12 Nov 20 04:34 UTC] No.25066484[source]▶
Can somebody explain how is M1 going to work on larger GPU tasks (rendering, encoding etc) with it's memory bandwidth M1 total memory bandwidth is 68.2 GB/s (128 bit LPDDR4x-4267)

AMD Radeon Pro 5600m memory bandwidth is 394.2 GB/s (2048 bit HBM2)

https://www.techpowerup.com/gpu-specs/radeon-pro-5600m.c3612

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baybal2 ◴[12 Nov 20 04:51 UTC] No.25066569[source]▶
68.2GB/s is a ton of bandwidth.

Actually, very, very few tasks on a desktop can stress a CPU enough to saturate the bandwidth on a single task.

Proper HPC programs written to have absolutely zero cache misses can. A javascript eating 1GB of RAM to show some text, and pictures, cannot.

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1. andy_threos_io ◴[12 Nov 20 10:21 UTC] No.25068391[source]▶
I asked about GPU workloads the bandwidths are 394.2 GB/s > 68.2 GB/s (5.78 times)

And even the raw GPU processing power AMD Radeon Pro 5600M is 5.274 TFLOPS vs M1 as Apple rated 2.6 TFLOPS

It's a downgrade in GPU processing power for the user.

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2. baybal2 ◴[12 Nov 20 16:02 UTC] No.25071220[source]▶
Yes, but for computational, non gaming tasks, it barely is.