MEM Score 50.7 on Apple M5 — HBM

MEM Score50.7

Percentile: Calibrating; 3 of 5 class runs needed. Top 81 % overall
Device class: Apple M5; LPDDR5X, 128-bit, 153 GB/s peak

Read110.5GB/s72 % of published peak

Write107.0GB/s

Copy102.6GB/s

Random access	11.6 GB/s	0.73 G reads/s
Latency proxy	259 ns
Sustain	109.8 GB/s	98 % held over 18 s

AI decode ceiling

28tokens/s, 8B model at 4-bit

3.2 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: 3.63 TB
Duration: 48.0 s
Stack position: Layer 000, die 42 of 64
Run: ztc7qrq3z4

Test your memory Find it in The Stack Apple M5