Can RTX 5090 run Flint 40B-A2.5B?

Q: Can RTX 5090 run Flint 40B-A2.5B?

Yes. Measured 224.9 tok/s generation on RTX 5090, via llama.cpp b11803, no speculation, NVFP4 GGUF (RecursiveSI/flint-nvfp4-gguf), f16 KV. Source: https://niklaslenz.com/v2/flint-40b-5090-nvfp4-llamacpp/

Yes. Measured 224.9 tok/s generation (llama.cpp b11803, no speculation, NVFP4 GGUF (RecursiveSI/flint-nvfp4-gguf), f16 KV; source).

Every measured result for Flint 40B-A2.5B on RTX 5090

Build	Quant / setup	Engine	tok/s
RTX 5090: Flint 40B NVFP4 at 224.9 tok/s, 110 tok/s at full 262K context (llama.cpp b11803)	NVFP4 GGUF (RecursiveSI/flint-nvfp4-gguf), f16 KV	llama.cpp b11803, no speculation	224.9	source
RTX 5090: Flint 40B NVFP4 at 224.9 tok/s, 110 tok/s at full 262K context (llama.cpp b11803)	NVFP4 GGUF, f16 KV	llama.cpp b11803, no speculation	110.2	source

Memory: RTX 5090 has 32 GB. Flint 40B-A2.5B weights are about 24.3 GB at Q4_K_M (39.8B params × 4.89 bits ÷ 8, before context/KV cache). Arithmetic, not a measurement; long contexts need more. Check other quants in the VRAM calculator.

Speeds are decode (generation) tokens/sec as reported by each source; quant, engine and context differ, so small gaps are noise.

All measured speeds for Flint 40B-A2.5B: best home rig for Flint 40B-A2.5B.

Flint 40B-A2.5B on other hardware: Apple M4 Pro · RTX 3090 · RTX 4090

Other models measured on RTX 5090: DeepSeek V4.1 Flash · GLM-5.3 Flash · Gemma 4 12B · Gemma 4 26B-A4B · Gemma 4 31B · Nemotron 3.5 Bolt 74B-A9B · Ornith 1.5 122B · Ornith 1.5 35B-A3B · Qwen3.5 9B · Qwen3.6 27B · Qwen3.6 35B-A3B · Qwen3.8 27B · Qwen3.8 Flash-Next · gpt-oss 20B

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