AnalysisOpinion / analysisHardware & Compute · Efficiency & Inference1 source · Oct 19, 2026

DeepSeek V4.1 Flash at 2.61 bpw + Engram: 26 t/s on dual RTX 3090s with dsx

Lucebox ROCMFP 2.5 bpw 0.253 78.7% 9.78

Proof1 community thread

Key points

  • The model's weight has been uploaded.
  • Author's 2.03 bpw build 2.03 bpw 0.462 71.5% 11.66
  • The engine doesn't seem to support images yet.
  • At 262,144 context with Engram tables (203 GB) on a SATA SSD, I got 26 t/s generation speed and 170 t/s prompt processing speed.

Sources (1)

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 17, 2026[AINews] High Taste Testers Ep. 1
  2. Oct 17, 2026deepseek-ai/DeepSeek-V4.1-Flash-1017
  3. Oct 17, 2026Nemotron 3.5 Bolt, Muse Spark Open, and a Fast LFM2.5 24B
  4. Oct 16, 2026Welcome Beam: a 501B open model you can own, customize, and scale
  5. Oct 15, 2026Granite Switch 4.1: Chat, Decisions, and Speech from One Endpoint
  6. Oct 15, 2026NVIDIA Nemotron 3.5 Super VL Powers Specialized Agents with Multimodal Reasoning

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