MEM Score 33.5 on Apple M1 — HBM

MEM Score33.5

Percentile: Top 60 %; of 5 verified runs in class
Device class: Apple M1; LPDDR4X, 128-bit, 68.25 GB/s peak

Read50.0GB/s73 % of published peak

Write51.9GB/s

Copy50.4GB/s

Random access	3.78 GB/s	0.24 G reads/s
Latency proxy	377 ns
Sustain	49.5 GB/s	99 % held over 18 s

AI decode ceiling

12tokens/s, 8B model at 4-bit

1.4 tokens/s at 70B, if it fits. Upper bound

Memprint: drawn from this run's measurements only.

Form factor declared as laptop.

Timing: GPU timestamps
Working set: 2 × 256 MiB
Data moved: 1.63 TB
Duration: 48.1 s
Stack position: Layer 002, die 56 of 64
Run: wck2zstxyj

Test your memory Find it in The Stack Apple M1