Can I Run Command R Family on NVIDIA GeForce RTX 5090?
Written by Jakub Rusinowski · Last updated September 29, 2026
Only with offload — Command R (35B) at Q4_K_M needs 32.7 GB at 8K context (21.1 GB weights + 11.6 GB KV cache/overhead) against the NVIDIA GeForce RTX 5090's 32 GB, so part of it spills onto CPU/system RAM and speed drops sharply.
Get a personalized upgrade path →
As an Amazon Associate we earn from qualifying purchases. Cloud GPU links are referral links — we may earn a commission at no extra cost to you.
NVIDIA GeForce RTX 5090 Specs
| VRAM | 32 GB |
| Memory Bandwidth | 1792 GB/s |
Command R (35B) on the NVIDIA GeForce RTX 5090: VRAM by quantization
| Quant | VRAM needed | Fits 32 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 81.5 GB | ✗ No | — | — |
| Q8_0 | 48.7 GB | ✗ No | — | — |
| Q6_K | 40.2 GB | ✗ No | — | — |
| Q5_K_M | 36.3 GB | ✗ No | — | — |
| Q4_K_M | 32.7 GB | ✗ No | — | — |
| Q3_K_M | 26.5 GB | ✓ Yes | 8K | — |
| Q2_K | 23 GB | ✓ Yes | 8K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 32 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the NVIDIA GeForce RTX 5090: 8K 32.7 GB ✗ · 32K 64.9 GB ✗ · 125K 189.7 GB ✗. Past 8K it no longer fits 32 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Command R Family on 256 GB of system RAM, CPU only: runs, but too slowly to be worth it.
Why It Does Not Fit
Every Command R Family variant requires more VRAM than the NVIDIA GeForce RTX 5090 provides (32 GB).
Nearest GPU That Fits
NVIDIA RTX 6000 Ada Generation (48 GB VRAM).
Command R Family needs ~33 GB but this GPU has 32 GB. Rent a A100 (40 GB)-class GPU by the hour instead of buying one:
Affiliate links — we may earn a commission if you sign up, at no extra cost to you.
Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Will Command R Family run on the NVIDIA GeForce RTX 5090?
Only with offload — Command R (35B) at Q4_K_M needs 32.7 GB at 8K context (21.1 GB weights + 11.6 GB KV cache/overhead) against the NVIDIA GeForce RTX 5090's 32 GB, so part of it spills onto CPU/system RAM and speed drops sharply.
What GPU should I get instead to run Command R Family?
The NVIDIA RTX 6000 Ada Generation (48 GB VRAM) is the cheapest upgrade that fits it.
Every Command R Family size on the NVIDIA GeForce RTX 5090
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Command R+ (104B) | 65.7 GB | Does not fit | — |
| Command R (35B) | 32.7 GB | Runs at Q3_K_M | — |
Command R Family on Other GPUs
- Command R Family on Apple M4
- Command R Family on Apple M2 Pro
- Command R Family on Apple M1 Pro
- Command R Family on Apple M5
- Command R Family on Apple M3 Pro
Popular Models on the NVIDIA GeForce RTX 5090
- DeepSeek R1 on NVIDIA GeForce RTX 5090
- Qwen 3 on NVIDIA GeForce RTX 5090
- Qwen 2.5 Family on NVIDIA GeForce RTX 5090
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Out of memory at long context (the KV cache, not the weights)
Buying Guide
← Can I Run It? | Command R Family Model Page | NVIDIA GeForce RTX 5090 GPU Page | VRAM calculator | Check Your Hardware