Home / Models / Gemma 3 27B Instruct / NVIDIA RTX 4000 20 GB
Can Gemma 3 27B Instruct run on NVIDIA RTX 4000 20 GB?
Yes. Calculated memory fit: Gemma 3 27B Instruct can run entirely in this GPU’s usable VRAM at one or more supported quantizations.
Can it run?
- Can it run?
- Yes, full GPU fit (calculated estimate).
- Full GPU fit?
- Yes
- Model
- Gemma 3 27B Instruct · 27B
- GPU
- NVIDIA RTX 4000 20 GB · 20 GB advertised
What else can NVIDIA RTX 4000 20 GB run? · Find other GPUs for Gemma 3 27B Instruct
Memory calculation
Breakdown for Q4 at 8K context, batch size 1. Calculator v1.0.0.
| Model weights | 16.1 GB |
|---|---|
| KV cache | 3.9 GB |
| Runtime reserve | 1.3 GB |
| Safety margin | 0.7 GB |
| Required (estimated) | 22.0 GB |
| GPU usable VRAM | 18.0 GB |
Result: CPU RAM OFFLOAD REQUIRED
Quantization table
| Quantization | 2K | 4K | 8K | 16K | 32K | 64K | 128K |
|---|---|---|---|---|---|---|---|
| BF16 | No | No | No | No | No | No | No |
| FP16 | No | No | No | No | No | No | No |
| Q3 | Fits | Fits | Limited context | Limited context | Limited context | Limited context | Limited context |
| Q4 | Offload | Offload | Offload | Offload | Offload | Offload | Offload |
| Q5 | Offload | Offload | Offload | Offload | Offload | Offload | Offload |
| Q6 | Offload | Offload | Offload | Offload | Offload | Offload | Offload |
| Q8 | Offload | Offload | Offload | Offload | Offload | Offload | Offload |
What fits entirely in VRAM?
- Q3 at 2K context
- Q3 at 4K context
What requires RAM offload?
Offload is shown only when the model does not fully fit in usable VRAM but stays within the modeled offload allowance.
Performance
No llama.cpp performance result is published for this pair yet. Memory fit above is unchanged. How performance is calculated
Available graphics cards
These SKUs use this GPU chip. Amazon CTAs appear only for EXACT/HIGH matches. Absence of a price does not change the compatibility result above.
Sources
Model: official config google/gemma-3-27b-it (official-fallback-config). GPU/product specs: Icecat. Compatibility: RigForAI calculator v1.0.0 estimated VRAM · Q8 at 8K: CPU_RAM_OFFLOAD_REQUIRED. Amazon: affiliate commerce match, not a spec source.