Can the RTX 5090 Run Gemma 3 27B at Q8_0?
Runs
Yes. Gemma 3 27B at Q8_0 is a 28.7 GB download (Hugging Face file listing for unsloth/gemma-3-27b-it-GGUF), and the RTX 5090 has 32 GB of VRAM, leaving about 3.3 GB for the KV cache and runtime. No published speed measurement for this pair passes SpecPicks' sanity checks yet, so no tokens-per-second figure is quoted.
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Published runs for Gemma 3 27B on the RTX 5090
No published run for this pair has passed the checks yet.
More about this pair
How much VRAM does Gemma 3 27B need?
The Q8_0 file is 28.7 GB. Add roughly 1.5 GB for the runtime and an ~8K-token context, so about 30.2 GB of VRAM holds it comfortably. Longer contexts grow the KV cache and need more.
What speed does Gemma 3 27B reach on the RTX 5090?
No published run of Gemma 3 27B on the RTX 5090 has been cited yet. Generation reads every weight once per token, so the RTX 5090's 1792 GB/s of memory bandwidth divided by the 28.71 GB file puts the theoretical ceiling near 62 tokens per second. That is an upper bound, not a speed estimate: kernel, launch and compute overhead keep real runs below it.
Check another pair
Gemma 3 27B on other GPUs
- RTX 4060 — Offload
- RTX 3060 Ti — Offload
- RTX 3060 12GB — Offload
- Intel Arc B580 — Offload
- RTX 4070 SUPER — Offload
- RTX 4060 Ti 16GB — Offload
- RTX 5060 Ti 16GB — Offload
- Intel Arc A770 16GB — Offload
- Radeon RX 9070 XT — Offload
- RTX 4070 Ti SUPER — Offload
- RTX 4080 — Offload
- RTX 5070 Ti — Offload
- RTX 5080 — Offload
- RTX 3090 — Offload
- Radeon RX 7900 XTX — Offload
- RTX 4090 — Offload
- RTX A6000 48GB — Runs
- RTX PRO 6000 Blackwell 96GB — Runs
Other models on the RTX 5090
- Llama 3.2 1B — Runs
- Llama 3.2 3B — Runs
- Mistral 7B — Runs
- Qwen2.5 7B — Runs
- Llama 3.1 8B — Runs, 150 tok/s (1 run)
- DeepSeek-R1-Distill-Llama 8B — Runs
- Qwen3 8B — Runs, 186 tok/s (1 run)
- Gemma 2 9B — Runs
- Gemma 3 12B — Runs
- Qwen2.5 14B — Runs, 89.9 tok/s (1 run)
- DeepSeek-R1-Distill-Qwen 14B — Runs, 89.1 tok/s (1 run)
- Qwen3 14B — Runs, 124 tok/s (1 run)
- Phi-4 14B — Runs
- gpt-oss-20b — Runs, 298 tok/s (1 run)
- Gemma 3 27B — Runs
- Gemma 2 27B — Runs
- Qwen3 30B-A3B — Runs, 234 tok/s (1 run)
- Qwen3 32B — Runs, 58 tok/s median
- Qwen2.5 32B — Runs, 45.1 tok/s (1 run)
- DeepSeek-R1-Distill-Qwen 32B — Runs, 49.8 tok/s median
- Qwen3 32B — Runs
- Qwen2.5 32B — Runs
- DeepSeek-R1-Distill-Qwen 32B — Runs
- Llama 3.1 70B — Offload
- Llama 3.3 70B — Offload
- DeepSeek-R1-Distill-Llama 70B — Offload
How the checks work
The fit is the Q8_0 file size against the card's VRAM, with 1.5 GB kept for the runtime and an ~8K context. A published run counts only if the pair fits, the run is Q4-class, its source does not call it an estimate, it is under the bandwidth ceiling (memory bandwidth ÷ GB read per token: the whole file for a dense model, only the active experts' weights for a mixture-of-experts model such as gpt-oss-20b or Qwen3 30B-A3B, which is why those can post figures above bandwidth ÷ file size), it is not slower than the same card on a model twice its size, a single run is not slower than the same card on a larger dense model, and it is not one figure pasted across many cards. The whole matrix is downloadable as a CSV under CC BY 4.0.
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This page is editorial synthesis based on publicly available information. No independent first-party benchmarking is reported.