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HBM
WebGPUEnterprise

Memory verified.

Measured 27 September 2026 at 19:28 UTC on Chrome 153, Windows by OP-2B415B.

MEM Score81.3
Percentile
Calibrating
4 of 5 class runs needed. Top 36 % overall
Device class
RTX 4070 SUPER
GDDR6X, 192-bit, 504 GB/s peak
Read481.9GB/s96 % of published peak
Write458.3GB/s
Copy433.3GB/s
Random access64.5 GB/s4.03 G reads/s
Latency proxy240 ns
Sustain431.9 GB/s100 % held over 18 s
AI decode ceiling

120tokens/s, 8B model at 4-bit

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

READWRITECOPYSUSTAINMEMPRINT / 739154
Memprint: drawn from this run's measurements only.
Timing
GPU timestamps
Working set
2 × 256 MiB
Data moved
12.3 TB
Duration
48.1 s
Stack position
Layer 002, die 28 of 64
Run
y8e57stxnh
Test your memoryFind it in The StackRTX 4070 SUPER