Home / Models / Gemma 4 26B-A4B Instruct
Gemma 4 26B-A4B Instruct
27B parameters · 3.8B active · native context 262,144 · gemma4
Estimated VRAM requirement
Weight memory uses parameter count × bits per weight, plus a quantization overhead factor. KV cache uses standard GQA formulas. Values are calculated estimates, not measured allocations.
| Quantization | Estimated weights | 2K total | 4K total | 8K total | 16K total | 32K total | 64K total | 128K total | 256K total |
|---|---|---|---|---|---|---|---|---|---|
| FP16 | 50.4 GB | 55.7 GB | 56.2 GB | 57.1 GB | 59.0 GB | 62.7 GB | 70.2 GB | 85.2 GB | 115.2 GB |
| Q8 | 28.4 GB | 31.9 GB | 32.3 GB | 33.3 GB | 35.1 GB | 38.9 GB | 46.4 GB | 61.4 GB | 91.4 GB |
| Q6 | 22.1 GB | 25.1 GB | 25.5 GB | 26.5 GB | 28.4 GB | 32.1 GB | 39.6 GB | 54.6 GB | 84.6 GB |
| Q5 | 18.7 GB | 21.4 GB | 21.9 GB | 22.8 GB | 24.7 GB | 28.4 GB | 35.9 GB | 50.9 GB | 80.9 GB |
| Q4 | 15.6 GB | 18.0 GB | 18.5 GB | 19.4 GB | 21.3 GB | 25.1 GB | 32.6 GB | 47.6 GB | 77.6 GB |
| Q3 | 12.4 GB | 14.7 GB | 15.1 GB | 16.1 GB | 17.9 GB | 21.7 GB | 29.2 GB | 44.2 GB | 74.2 GB |
Find a GPU for this model
Run at the quantization and context selected below. Defaults are Q4 and 8K when you do not change the controls. Results are full-VRAM fits only — not a speed ranking.
- Run at
- Q4 · 8K context
- Required VRAM
- 19.4 GB
Current cheapest full-VRAM option at Q4 · 8K: NVIDIA Quadro P6000 24 GB $646.96. See all value options · Build a PC for this model · Compatible workstations · Rent a server · Buy vs rent.
Lowest-cost full-VRAM option
Sorted by lowest current Amazon price among GPUs that fit entirely in VRAM. This is not a performance ranking.
NVIDIA Quadro P6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 2.2 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 3 mapped · 2 Amazon-matched
- Amazon
- $646.96 current Amazon price
AMD Radeon RX 7900 XTX 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 2.2 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 2 mapped · 2 Amazon-matched
- Amazon
- $1059.99 current Amazon price
NVIDIA RTX 3090 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 2.2 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 18 mapped · 9 Amazon-matched
- Amazon
- $1347.22 current Amazon price
More VRAM headroom
Sorted by leftover usable VRAM after the calculated requirement. Headroom is not tokens/sec.
NVIDIA B200 192 GB
- GPU VRAM
- 192 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 172.8 GB
- VRAM headroom
- 153.4 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 0 mapped · 0 Amazon-matched
- Amazon
- Check availability
NVIDIA H200 141 GB
- GPU VRAM
- 141 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 126.9 GB
- VRAM headroom
- 107.5 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 0 mapped · 0 Amazon-matched
- Amazon
- Check availability
NVIDIA GH200 96 GB
- GPU VRAM
- 96 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 86.4 GB
- VRAM headroom
- 67.0 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 0 mapped · 0 Amazon-matched
- Amazon
- Check availability
Other compatible GPUs
NVIDIA RTX 4500 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 2.2 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 2 mapped · 0 Amazon-matched
- Amazon
- Check availability
NVIDIA RTX 5000 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 9.4 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 2 mapped · 1 Amazon-matched
- Amazon
- $4479.96 current Amazon price
NVIDIA Tesla K80 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 19.4 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 2.2 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 0 Amazon-matched
- Amazon
- Check availability
Compatible GPUs
Status is a calculated memory fit against usable VRAM (advertised × 0.9). Open a GPU to see product SKUs and Amazon listings.
Compare GPUs for this model
Published chip comparisons where both GPUs fully fit this model at Q4 / 8K. Opens with this model preselected; that query is not indexed.
Sources
Model specifications: official repository google/gemma-4-26B-A4B-it · revision main. Compatibility: RigForAI calculator v1.0.0 (estimated VRAM). GPU products: Icecat. Amazon is a separate affiliate match and is not used as a spec source.