作者： Jakub Rusinowski · 最后更新： 2026年7月12日
No — Command R Family doesn't fit the NVIDIA GeForce RTX 4080's 16 GB; you're short by ~1.7 GB even at Q2_K. The cheapest card that runs it is the NVIDIA GeForce RTX 4090 (24 GB).
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| VRAM | 16 GB |
| Memory Bandwidth | 717 GB/s |
| Quant | VRAM needed | Fits 16 GB? | Max context |
|---|---|---|---|
| F16 | 76.2 GB | ✗ No | — |
| Q8_0 | 43.4 GB | ✗ No | — |
| Q6_K | 34.9 GB | ✗ No | — |
| Q5_K_M | 31 GB | ✗ No | — |
| Q4_K_M | 27.3 GB | ✗ No | — |
| Q3_K_M | 21.1 GB | ✗ No | — |
| Q2_K | 17.7 GB | ✗ No | — |
VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 16 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Every Command R Family variant requires more VRAM than the NVIDIA GeForce RTX 4080 provides (16 GB).
NVIDIA GeForce RTX 4090 (24 GB VRAM).
Command R Family needs ~21 GB but this GPU has 16 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
No — Command R Family doesn't fit the NVIDIA GeForce RTX 4080's 16 GB; you're short by ~1.7 GB even at Q2_K. The cheapest card that runs it is the NVIDIA GeForce RTX 4090 (24 GB).
The NVIDIA GeForce RTX 4090 (24 GB VRAM) is the cheapest upgrade that fits it.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Command R+ (104B) | 62.8 GB | Does not fit | — |
| Command R (35B) | 21.1 GB | Does not fit | — |
← Can I Run It? | Command R Family Model Page | NVIDIA GeForce RTX 4080 GPU Page | Check Your Hardware