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HBM
WebGPUEnterprise

Memory verified.

Measured 27 September 2026 at 18:50 UTC on Chrome 153, Windows by OP-0A8C1F.

MEM Score66.7
Percentile
Calibrating
2 of 5 class runs needed. Top 64 % overall
Device class
RTX 4070 Laptop
GDDR6, 128-bit, 256 GB/s peak (varies)
Read224.2GB/s
Write219.8GB/s
Copy208.1GB/s
Random access39.6 GB/s2.48 G reads/s
Latency proxy286 ns
Sustain208.3 GB/s100 % held over 18 s
AI decode ceiling

56tokens/s, 8B model at 4-bit

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

READWRITECOPYSUSTAINMEMPRINT / 720378
Memprint: drawn from this run's measurements only.
Timing
GPU timestamps
Working set
2 × 256 MiB
Data moved
6.61 TB
Duration
48.8 s
Stack position
Layer 002, die 17 of 64
Run
1qkxsvpzk7
Test your memoryFind it in The StackRTX 4070 Laptop