MEM Score 41.2 on iPhone — HBM

MEM Score41.2

Percentile: Top 5 %; of 23 verified runs in class
Device class: iPhone; LPDDR, peak not published

Read60.3GB/s

Write65.0GB/s

Copy61.5GB/s

Random access	12.0 GB/s	0.75 G reads/s
Latency proxy	261 ns
Sustain	61.4 GB/s	100 % held over 18 s

AI decode ceiling

15tokens/s, 8B model at 4-bit

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

Memprint: drawn from this run's measurements only.

Sized for a phone: a smaller working set that still outruns every cache on the chip.

Timing: GPU timestamps
Working set: 2 × 128 MiB
Data moved: 2.04 TB
Duration: 47.9 s
Stack position: Layer 003, die 29 of 64
Run: 63kbrhj39s

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