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HBM
WebGPUEnterprise

Memory verified.

Measured 27 September 2026 at 18:41 UTC on Opera 136, Windows by OP-338F2A.

MEM Score79.7
Percentile
Calibrating
4 of 5 class runs needed. Top 38 % overall
Device class
RTX 4070 SUPER
GDDR6X, 192-bit, 504 GB/s peak
Read439.6GB/s87 % of published peak
Write431.2GB/s
Copy399.3GB/s
Random access59.8 GB/s3.74 G reads/s
Latency proxy241 ns
Sustain399.9 GB/s100 % held over 18 s
AI decode ceiling

110tokens/s, 8B model at 4-bit

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

READWRITECOPYSUSTAINMEMPRINT / 907263
Memprint: drawn from this run's measurements only.
Timing
GPU timestamps
Working set
2 × 256 MiB
Data moved
13.9 TB
Duration
48.8 s
Stack position
Layer 002, die 9 of 64
Run
jbmw3dgwy7
Test your memoryFind it in The StackRTX 4070 SUPER