MEM Score 20.2 on iPhone — HBM

MEM Score20.2

Percentile: Top 100 %; of 9 verified runs in class
Device class: iPhone; LPDDR, peak not published

Read21.5GB/s

Write26.3GB/s

Copy24.3GB/s

Random access	3.94 GB/s	0.25 G reads/s
Latency proxy	379 ns
Sustain	22.3 GB/s	99 % held over 18 s

AI decode ceiling

5.4tokens/s, 8B model at 4-bit

0.6 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: 763 GB
Duration: 47.9 s
Stack position: Layer 002, die 43 of 64
Run: kpddpxjawg

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