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HBM
WebGPUEnterprise

Memory verified.

Measured 27 September 2026 at 18:53 UTC on Chrome 153, Windows by OP-0A8C1F.

MEM Score67.5
Percentile
Calibrating
2 of 5 class runs needed. Top 63 % overall
Device class
RTX 4070 Laptop
GDDR6, 128-bit, 256 GB/s peak (varies)
Read210.1GB/s
Write236.8GB/s
Copy225.3GB/s
Random access42.7 GB/s2.67 G reads/s
Latency proxy278 ns
Sustain226.3 GB/s100 % held over 18 s
AI decode ceiling

53tokens/s, 8B model at 4-bit

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

READWRITECOPYSUSTAINMEMPRINT / 606471
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
6.13 TB
Duration
49.3 s
Stack position
Layer 002, die 21 of 64
Run
5vxsvh1161
Test your memoryFind it in The StackRTX 4070 Laptop