01.AI on NVIDIA Ampere
Can I run Yi-1.5 34B on an RTX 3090?
Not at Q4_K_M — it needs 22.2 GB against 21.8 GB available. Drop to Q4_K_S and it fits, at about 29.9 tokens per second.
Won't fit
22.2 GB of 21.8 GB · 102%023 GB
Weights
19.5 GB
KV cache
1.9 GB
Runtime overhead
0.9 GB
Over the limit
0.5 GB
Short by 0.5 GB. You can run it with 58 of 60 layers on the RTX 3090 and the rest in system RAM, at roughly 19.6 tok/s — usable for batch work, painful for chat. A smaller quantisation or a shorter context is usually the better trade.
Generation19.6tok/s
Prompt processing433tok/s
Max context6Ktokens
KV per 1K tokens0GB
Every quantisation of Yi-1.5 34B on a RTX 3090
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 | 64.1 GB | 66.8 GB | Won't fit | — | 0.83 |
| INT8 / W8A8 | 8.50 | 33.8 GB | 36.6 GB | Won't fit | — | 2.36 |
| Q8_0 (GGUF) | 8.50 | 33.8 GB | 36.6 GB | Won't fit | — | 2.36 |
| FP8 (E4M3) | 8.00 | 32.0 GB | 34.8 GB | Won't fit | — | 2.65 |
| Q6_K | 6.56 | 26.3 GB | 29.0 GB | Won't fit | — | 4.41 |
| Q5_K_M | 5.67 | 22.7 GB | 25.5 GB | Won't fit | — | 7.54 |
| Q5_K_S | 5.52 | 22.1 GB | 24.9 GB | Won't fit | — | 8.31 |
| Q4_K_M | 4.85 | 19.5 GB | 22.2 GB | Won't fit | 6K | 19.6 |
| Q4_K_S | 4.58 | 18.4 GB | 21.2 GB | Fits, but tight | 10K | 29.9 |
| Q4_0 | 4.55 | 18.3 GB | 21.1 GB | Fits, but tight | 11K | 30.1 |
| AWQ 4-bit | 4.25 | 18.3 GB | 21.0 GB | Fits, but tight | 11K | 30.2 |
| GPTQ 4-bit | 4.25 | 18.3 GB | 21.0 GB | Fits, but tight | 11K | 30.2 |
| MXFP4 | 4.25 | 18.3 GB | 21.0 GB | Fits, but tight | 11K | 30.2 |
| IQ4_XS | 4.25 | 17.2 GB | 19.9 GB | Fits, but tight | 16K | 32.0 |
| Q3_K_M | 3.91 | 15.8 GB | 18.6 GB | Runs comfortably | 22K | 34.5 |
| IQ3_M | 3.70 | 15.0 GB | 17.8 GB | Runs comfortably | 25K | 36.3 |
| IQ3_XXS | 3.06 | 12.5 GB | 15.3 GB | Runs comfortably | 32K | 42.9 |
| Q2_K | 2.63 | 10.8 GB | 13.6 GB | Runs comfortably | 32K | 48.9 |
| IQ2_XXS | 2.06 | 8.6 GB | 11.4 GB | Runs comfortably | 32K | 60.0 |
| IQ1_M | 1.75 | 7.4 GB | 10.2 GB | Runs comfortably | 32K | 68.5 |