Written by Jakub Rusinowski · Last updated July 12, 2026
No — Command R Family doesn't fit the AMD Radeon RX 7800 XT'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 | 624 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 AMD Radeon RX 7800 XT 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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No — Command R Family doesn't fit the AMD Radeon RX 7800 XT'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.
← Can I Run It? | Command R Family Model Page | AMD Radeon RX 7800 XT GPU Page | Check Your Hardware