Memory verified.

Measured 27 September 2026 at 18:09 UTC on Edge 153, macOS by OP-3E70AF.

MEM Score51.6
Percentile
Calibrating
3 of 5 class runs needed. Top 76 % overall
Device class
Apple M5
LPDDR5X, 128-bit, 153 GB/s peak
Read112.8GB/s74 % of published peak
Write117.7GB/s
Copy110.3GB/s
Random access11.3 GB/s0.71 G reads/s
Latency proxy265 ns
Sustain115.0 GB/s100 % 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

READWRITECOPYSUSTAINMEMPRINT / 536424
Memprint: drawn from this run's measurements only.
  • The tab was hidden for part of the run.
Timing
GPU timestamps
Working set
2 × 256 MiB
Data moved
3.89 TB
Duration
47.9 s
Stack position
Layer 001, die 39 of 64
Run
wp94wb3yc5
Test your memoryFind it in The StackApple M5