Cohere on NVIDIA Blackwell
Can I run Command R 35B on an RTX 5090?
Not at Q4_K_M — it needs 31.0 GB against 29.3 GB available. Drop to IQ4_XS and it fits, at about 51.1 tokens per second.
Won't fit
31.0 GB of 29.3 GB · 106%032 GB
Weights
20.1 GB
KV cache
10.0 GB
Runtime overhead
0.9 GB
Over the limit
1.7 GB
Short by 1.7 GB. You can run it with 36 of 40 layers on the RTX 5090 and the rest in system RAM, at roughly 12.7 tok/s — usable for batch work, painful for chat. A smaller quantisation or a shorter context is usually the better trade.
Generation12.7tok/s
Prompt processing1255tok/s
Max context7Ktokens
KV per 1K tokens0GB
Every quantisation of Command R 35B on a RTX 5090
Highlighted row is the highest quality that still fits at 8K context.
| Quantisation | bpw | Weights | Total | Verdict | Max ctx | tok/s |
|---|---|---|---|---|---|---|
| FP16 / BF16 | 16.00 | 65.2 GB | 76.0 GB | Won't fit | — | 0.82 |
| INT8 / W8A8 | 8.50 | 33.7 GB | 44.6 GB | Won't fit | — | 2.21 |
| Q8_0 (GGUF) | 8.50 | 33.7 GB | 44.6 GB | Won't fit | — | 2.21 |
| FP8 (E4M3) | 8.00 | 32.6 GB | 43.5 GB | Won't fit | — | 2.39 |
| Q6_K | 6.56 | 26.7 GB | 37.6 GB | Won't fit | 1K | 3.81 |
| Q5_K_M | 5.67 | 23.1 GB | 34.0 GB | Won't fit | 4K | 5.94 |
| AWQ 4-bit | 4.25 | 23.0 GB | 33.9 GB | Won't fit | 4K | 5.95 |
| GPTQ 4-bit | 4.25 | 23.0 GB | 33.9 GB | Won't fit | 4K | 5.95 |
| MXFP4 | 4.25 | 23.0 GB | 33.9 GB | Won't fit | 4K | 5.95 |
| Q5_K_S | 5.52 | 22.5 GB | 33.4 GB | Won't fit | 5K | 6.71 |
| Q4_K_M | 4.85 | 20.1 GB | 31.0 GB | Won't fit | 7K | 12.7 |
| Q4_K_S | 4.58 | 19.1 GB | 30.0 GB | Won't fit | 7K | 20.8 |
| Q4_0 | 4.55 | 19.0 GB | 29.9 GB | Won't fit | 8K | 20.9 |
| IQ4_XS | 4.25 | 17.9 GB | 28.8 GB | Fits, but tight | 8K | 51.1 |
| Q3_K_M | 3.91 | 16.7 GB | 27.6 GB | Fits, but tight | 9K | 53.9 |
| IQ3_M | 3.70 | 15.9 GB | 26.8 GB | Fits, but tight | 10K | 55.8 |
| IQ3_XXS | 3.06 | 13.7 GB | 24.5 GB | Runs comfortably | 12K | 62.5 |
| Q2_K | 2.63 | 12.1 GB | 23.0 GB | Runs comfortably | 13K | 68.1 |
| IQ2_XXS | 2.06 | 10.1 GB | 21.0 GB | Runs comfortably | 15K | 77.1 |
| IQ1_M | 1.75 | 9.0 GB | 19.8 GB | Runs comfortably | 16K | 83.2 |