MEM Score 41.1 on iPhone — HBM

MEM Score41.1

Percentile: Top 9 %; of 23 verified runs in class
Device class: iPhone; LPDDR, peak not published

Read61.2GB/s

Write64.7GB/s

Copy61.3GB/s

Random access	11.7 GB/s	0.73 G reads/s
Latency proxy	263 ns
Sustain	60.9 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: 2.02 TB
Duration: 47.9 s
Stack position: Layer 003, die 28 of 64
Run: 8asmfbzdsp

Test your memory Find it in The Stack iPhone