InferenceX Research

Articles

Benchmark write-ups on agentic inference, AgentX results, and chip and serving-stack economics.

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10 min read

GB300 NVL72 vs GB200 NVL72 Inference Performance & Perf per Dollar - on DeepSeek-V4-Pro 1.6T: Up to 2.83x Throughput

DSv4-Pro FP4 8K/1K, Dynamo+vLLM, disaggregated on both racks. GB300's 50% extra HBM (288 vs 192 GB/GPU) unlocks a wider prefill+decode recipe GB200 can't fit — lifting middle-of-curve perf/$ by 2.31x despite a 20% per-GPU TCO premium.

  • benchmark
  • gpu
  • inference
  • +9

13 min read

MI355X DeepSeek-V4-Pro on SGLang: 110.5x Throughput per GPU in 26 Days

The amd/deepseek_v4 side branch shipped TileLang attention indexer, Triton sparse MLA, fused RoPE/Hadamard, FlyDSL MoE, and FP4 weights across 31 performance optimizations PRs — lifting first-light 20 tok/s/GPU at 2.4 tok/s/user into 2,256 tok/s/GPU at 9.4 tok/s/user on 8K/1K, with both throughput and interactivity climbing together

  • benchmark
  • gpu
  • inference
  • +6

8 min read

GB200 NVL72 vs B200 on DeepSeek R1 670B: Up to 4.4x Throughput per GPU at 125 tok/s/user

DeepSeek R1 FP4 1k/1k. NVL72's 72-GPU NVLink scale-up fabric lets decode run wide EP up to EP=32, where B200's 8-GPU NVLink island caps out at EP=8 over RoCEv2

  • benchmark
  • gpu
  • inference
  • +9

5 min read

SGLang 0.5.6 on B200 DeepSeek R1 FP4: Up to 1.8x at Low Concurrency

Piecewise CUDA graphs for DeepSeek V3, a unified event loop, and JIT kernels push 8k/1k throughput from 508 to 907 tok/s/GPU on the same 16 GPU B200 pool

  • benchmark
  • inference
  • gpu
  • +5