Home / Find a GPU
Deterministic VRAM fit · not a benchmark
Find a GPU for your AI model
Choose a model, quantization and context size. The calculator returns GPUs that can hold the estimated memory entirely in VRAM, then maps those chips to real product SKUs and Amazon listings. This does not rank speed.
Assumptions used
- Model
- Gemma 2 27B Instruct
- Quantization
- Q4
- Context
- 8K
- Required VRAM
- 20.9 GB
20 canonical GPUs fit entirely in VRAM under these assumptions.
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
NVIDIA Quadro P6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
AMD Radeon RX 7900 XTX 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA RTX 3090 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 18 mapped · 13 Amazon-matched
- Amazon
- $1347.22 current Amazon price
AMD
AMD Radeon RX 7900 XT 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $1599.00 current Amazon price
NVIDIA
NVIDIA RTX 3090 Ti 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 5 mapped · 2 Amazon-matched
- Amazon
- $2210.00 current Amazon price
NVIDIA
NVIDIA RTX 4090 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 17 mapped · 11 Amazon-matched
- Amazon
- $2579.99 current Amazon price
NVIDIA
NVIDIA RTX A5000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 3 mapped · 1 Amazon-matched
- Amazon
- $2760.00 current Amazon price
NVIDIA
NVIDIA Quadro M6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $3498.02 current Amazon price
NVIDIA
NVIDIA RTX 5000 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 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
NVIDIA RTX 5090 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 8 mapped · 8 Amazon-matched
- Amazon
- $4799.99 current Amazon price
NVIDIA
NVIDIA RTX 6000 48 GB
- GPU VRAM
- 48 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 43.2 GB
- VRAM headroom
- 22.3 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $20888.00 current Amazon price
More VRAM headroom
Sorted by leftover usable VRAM after the calculated requirement. Headroom is not tokens/sec.
NVIDIA
NVIDIA RTX 6000 48 GB
- GPU VRAM
- 48 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 43.2 GB
- VRAM headroom
- 22.3 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $20888.00 current Amazon price
NVIDIA
NVIDIA RTX 8000 48 GB
- GPU VRAM
- 48 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 43.2 GB
- VRAM headroom
- 22.3 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
NVIDIA
NVIDIA RTX A6000 48 GB
- GPU VRAM
- 48 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 43.2 GB
- VRAM headroom
- 22.3 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
NVIDIA Quadro GV100 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 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
NVIDIA
NVIDIA RTX 5000 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 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
NVIDIA RTX 5090 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 8 mapped · 8 Amazon-matched
- Amazon
- $4799.99 current Amazon price
NVIDIA
NVIDIA Tesla M10 32 GB
- GPU VRAM
- 32 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 28.8 GB
- VRAM headroom
- 7.9 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
AMD
AMD Radeon RX 7900 XT 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $1599.00 current Amazon price
AMD
AMD Radeon RX 7900 XTX 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA Quadro M6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 1 mapped · 1 Amazon-matched
- Amazon
- $3498.02 current Amazon price
NVIDIA
NVIDIA Quadro P6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA
NVIDIA RTX 3090 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 18 mapped · 13 Amazon-matched
- Amazon
- $1347.22 current Amazon price
Other compatible GPUs
NVIDIA
NVIDIA RTX 4500 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA RTX 6000 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 GB — leftover usable memory after the calculated requirement, not a speed ranking
- Compatible
- Yes — fits entirely in VRAM
- Product SKUs
- 3 mapped · 0 Amazon-matched
- Amazon
- Check availability
NVIDIA
NVIDIA RTX A5500 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA
NVIDIA Tesla K80 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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
NVIDIA
NVIDIA Tesla M40 24 GB
- GPU VRAM
- 24 GB advertised
- Required VRAM
- 20.9 GB
- Usable GPU VRAM
- 21.6 GB
- VRAM headroom
- 0.7 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