Best LLMs for 20 GB VRAM
作者： Jakub Rusinowski · 最后更新： 2026年9月6日
These are the strongest local models that fit entirely in 20 GB of VRAM, ranked by capability, with the quantization level and estimated tokens/sec needed to fit.
GPUs at This Tier
Ranked Models
| Qwen 2.5 Family — Qwen 2.5 14B Instruct | Q4_K_M · 8.4525 GB · ~47 tok/s on AMD Radeon RX 7900 XT |
| Qwen 3 — Qwen 3 14B | Q4_K_M · 8.935500000000001 GB · ~46 tok/s on AMD Radeon RX 7900 XT |
| Codestral — Codestral 22B | Q4_K_M · 13.40325 GB · ~32 tok/s on AMD Radeon RX 7900 XT |
| DeepSeek R1 — DeepSeek R1 Distill Qwen 14B | Q4_K_M · 8.4525 GB · ~48 tok/s on AMD Radeon RX 7900 XT |
| Phi-4 Family — Phi-4 (14B) | Q4_K_M · 8.4525 GB · ~47 tok/s on AMD Radeon RX 7900 XT |
| Gemma 4 — Gemma 4 31B | Q4_K_M · 18.71625 GB |
| Gemma 3 — Gemma 3 27B Instruct | Q4_K_M · 16.30125 GB |
| Mistral Small 3.1 — Mistral Small 3.1 24B | Q4_K_M · 14.248500000000002 GB · ~31 tok/s on AMD Radeon RX 7900 XT |
| Qwen 3.6 — Qwen 3.6 27B | Q4_K_M · 16.78425 GB · ~27 tok/s on AMD Radeon RX 7900 XT |
| InternLM 3 — InternLM 3 20B Instruct | Q4_K_M · 12.075 GB · ~35 tok/s on AMD Radeon RX 7900 XT |
| Qwen3.8 — Qwen3.8 27B | Q4_K_M · 16.772175 GB · ~27 tok/s on AMD Radeon RX 7900 XT |
| Mistral Family — Mistral Small 3 (24B) | Q4_K_M · 14.49 GB · ~30 tok/s on AMD Radeon RX 7900 XT |
| Qwen 3 — Qwen 3 30B-A3B (MoE) | Q4_K_M · 18.414375 GB · ~123 tok/s on AMD Radeon RX 7900 XT |
| Granite 3.0 — Granite 3.0 8B Instruct | Q4_K_M · 4.83 GB · ~71 tok/s on AMD Radeon RX 7900 XT |
| GLM-4.7 / GLM-Z1 — GLM-4.7-Flash 30B-A3B | Q4_K_M · 18.1125 GB · ~115 tok/s on AMD Radeon RX 7900 XT |
购买此硬件 AMD Radeon RX 7900 XT 20GB — 20 GB VRAM · 315 W board power立即云端部署 RunPod 上的 RTX 4090 — 低至 $0.34/小时 · 价格核实于 2026-07
或在 Vast.ai 比较，低至 $0.35/小时 (typical low · varies)
作为亚马逊联盟成员，我们从符合条件的购买中获得收入。云 GPU 链接为推荐链接——我们可能获得佣金，您无需额外付费。
FAQ
What LLMs run well with 20 GB VRAM?
Qwen 2.5 Family, Qwen 3, Codestral, DeepSeek R1, Phi-4 Family all fit in 20 GB VRAM.
Which GPUs have 20 GB VRAM?
AMD Radeon RX 7900 XT, NVIDIA GeForce RTX 5090 Laptop GPU, AMD Radeon RX 7900 XTX, Apple M2.
Can-I-Run Pages Near 20 GB
- DeepSeek R1 on AMD Radeon RX 7900 XT
- Llama 3.3 on AMD Radeon RX 7900 XT
- Nemotron 70B on AMD Radeon RX 7900 XT
- Command R Family on AMD Radeon RX 7900 XT
- Phi-4 Family on AMD Radeon RX 7900 XT
- Qwen 2.5 Family on AMD Radeon RX 7900 XT
- Mistral Family on AMD Radeon RX 7900 XT
- Gemma 4 on AMD Radeon RX 7900 XT