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Wësche

@WescheNex1q • 1,588 subscribers

Day time artist and night time AI enthusiast. Building & benchmarking frontier LLMs on 4x DGX Spark clusters + Mac. Creator of Vesica Studio. Houston

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Qwen3.6-27B dense quality ladder. Same tasks. Same grader. Same day. How much does compression cost? FP8 - 83.3 · 29GB NVFP4 - 83.0 · ~15GB BF16 - 81.9 · 56GB GPTQ-Pro - 79.4 · 13GB IQ2_XXS - 79.0 · 9.4GB Who wins where: 🥇 Raw quality → FP8 (83.3) 🥇 Practical default → NVFP4 (83.0 at ~15GB) 🥈 Full precision → BF16 is NOT better (81.9) ❌ "Just use any 4-bit" → GPTQ-Pro loses 3.6 pts vs NVFP4 🛟 Emergency tiny → IQ2 still holds at 79.0 Overall winner: If you care about the absolute number: FP8 If you care about running it on a real box: NVFP4 is the overall pick. Same quality class as full precision. Half the size of FP8. ~4× smaller than BF16.

Qwen3.6-27B dense quality ladder. Same tasks. Same grader. Same day. How much does compression cost? FP8 - 83.3 · 29GB NVFP4 - 83.0 · ~15GB BF16 - 81.9 · 56GB GPTQ-Pro - 79.4 · 13GB IQ2_XXS - 79.0 · 9.4GB Who wins where: 🥇 Raw quality → FP8 (83.3) 🥇 Practical default → NVFP4 (83.0 at ~15GB) 🥈 Full precision → BF16 is NOT better (81.9) ❌ "Just use any 4-bit" → GPTQ-Pro loses 3.6 pts vs NVFP4 🛟 Emergency tiny → IQ2 still holds at 79.0 Overall winner: If you care about the absolute number: FP8 If you care about running it on a real box: NVFP4 is the overall pick. Same quality class as full precision. Half the size of FP8. ~4× smaller than BF16.

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One DGX Spark. Qwen3.6-35B 64 users. 700+ tok/s. 32,768 tokens in 54 seconds. 38W Each user has their own prompt and their own KV cache, and vLLM batches every active stream through the GPU each step. Recipe → NVIDIA AI

One DGX Spark. Qwen3.6-35B 64 users. 700+ tok/s. 32,768 tokens in 54 seconds. 38W Each user has their own prompt and their own KV cache, and vLLM batches every active stream through the GPU each step. Recipe → NVIDIA AI

163,881 views • 21 days ago

16 people chatting with Qwen3.6-35B at once ONE DGX Spark. This is a real capture, not a mockup: every token you see replays at its actual measured arrival time. Peaks ~440 tok/s total. A single user gets 105 tok/s. NVFP4 + MTP-3 on vLLM.

16 people chatting with Qwen3.6-35B at once ONE DGX Spark. This is a real capture, not a mockup: every token you see replays at its actual measured arrival time. Peaks ~440 tok/s total. A single user gets 105 tok/s. NVFP4 + MTP-3 on vLLM.

26,094 views • 22 days ago

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