MEM Score 33.7 on Apple M1 — HBM

MEM Score33.7

Percentile: Top 25 %; of 8 verified runs in class
Device class: Apple M1; LPDDR4X, 128-bit, 68.25 GB/s peak

Read51.1GB/s75 % of published peak

Write52.8GB/s

Copy51.3GB/s

Random access	3.79 GB/s	0.24 G reads/s
Latency proxy	383 ns
Sustain	49.7 GB/s	99 % held over 18 s

AI decode ceiling

13tokens/s, 8B model at 4-bit

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

Memprint: drawn from this run's measurements only.

Timing: GPU timestamps
Working set: 2 × 256 MiB
Data moved: 1.68 TB
Duration: 48.1 s
Stack position: Layer 003, die 32 of 64
Run: 7dnvjdtkcd

Test your memory Find it in The Stack Apple M1