Custom Blackwell server hits 198 tokens/second

// 48d agoBENCHMARK RESULT

Custom Blackwell server hits 198 tokens/second

Visual-Synthesizer released a benchmark for a dual RTX 6000 Blackwell inference server reaching 198 tokens/second on Qwen3.5-122B. The build uses a PCIe switch and speculative decoding to rival enterprise H100 performance at a lower cost.

// ANALYSIS

This project demonstrates that architectural optimization and low-latency interconnects push prosumer hardware into enterprise territory. The PIX topology via a PCIe switch proves that latency reduction is more critical than bandwidth for MoE tensor parallel decoding, while NEXTN speculative decoding provides a massive performance uplift.

// TAGS

llminferenceqwen-3-5rtx-6000blackwellsglangbenchmarkpcie-switchspeculative-decodingfp4moenvidialocalllamartx6kpro

DISCOVERED

48d ago

2026-04-10

PUBLISHED

48d ago

2026-04-10

RELEVANCE

9/ 10

AUTHOR

Visual_Synthesizer

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