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HBM
WebGPUEnterprise

Memory verified.

Measured 27 September 2026 at 23:15 UTC on Safari 26, iOS by OP-E31121.

MEM Score20.6
Percentile
Top 89 %
of 9 verified runs in class
Device class
iPhone
LPDDR, peak not published
Read22.0GB/s
Write24.1GB/s
Copy24.8GB/s
Random access4.10 GB/s0.26 G reads/s
Latency proxy390 ns
Sustain24.7 GB/s100 % held over 18 s
AI decode ceiling

5.5tokens/s, 8B model at 4-bit

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

READWRITECOPYSUSTAINMEMPRINT / 363420
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
786 GB
Duration
48.1 s
Stack position
Layer 002, die 49 of 64
Run
5hkzgzp1ec
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