Does gpt-oss-120b-abliterated fit in 32GB of VRAM?
Not at these settings. No indexed quantization of gpt-oss-120b-abliterated fits 32GB card at any context we compute, with q8_0 KV. The smallest shipped quantization is 61.54 GiB in weights alone, against 29.76 GiB usable. CPU offload can still run it, slowly.
Every quantization at every context
| Quant | Weights● | 4K◐ | 8K◐ | 16K◐ | 32K◐ | 64K◐ | 128K◐ |
|---|---|---|---|---|---|---|---|
| Q8_0 | 115.76 GiB | 116.6 | 116.7 | 116.9 | 117.2 | 117.8 | 119.0 |
| I1-Q6_K | 115.67 GiB | 116.5 | 116.6 | 116.8 | 117.1 | 117.7 | 118.9 |
| Q6_K | 115.67 GiB | 116.5 | 116.6 | 116.8 | 117.1 | 117.7 | 118.9 |
| I1-Q5_K_M | 87.49 GiB | 88.4 | 88.4 | 88.6 | 88.9 | 89.5 | 90.7 |
| Q5_K_M | 87.49 GiB | 88.4 | 88.4 | 88.6 | 88.9 | 89.5 | 90.7 |
| I1-Q5_K_S | 81.92 GiB | 82.8 | 82.9 | 83.0 | 83.3 | 83.9 | 85.1 |
| Q5_K_S | 81.92 GiB | 82.8 | 82.9 | 83.0 | 83.3 | 83.9 | 85.1 |
| I1-Q4_K_M | 81.82 GiB | 82.7 | 82.8 | 82.9 | 83.2 | 83.8 | 85.0 |
| Q4_K_M | 81.82 GiB | 82.7 | 82.8 | 82.9 | 83.2 | 83.8 | 85.0 |
| I1-Q4_K_S | 75.38 GiB | 76.3 | 76.3 | 76.5 | 76.8 | 77.4 | 78.6 |
| Q4_K_S | 75.38 GiB | 76.3 | 76.3 | 76.5 | 76.8 | 77.4 | 78.6 |
| I1-Q4_1 | 68.42 GiB | 69.3 | 69.4 | 69.5 | 69.8 | 70.4 | 71.6 |
| I1-Q3_K_L | 68.39 GiB | 69.3 | 69.3 | 69.5 | 69.8 | 70.4 | 71.6 |
| Q3_K_L | 68.39 GiB | 69.3 | 69.3 | 69.5 | 69.8 | 70.4 | 71.6 |
| I1-Q3_K_M | 66.24 GiB | 67.1 | 67.2 | 67.3 | 67.6 | 68.2 | 69.4 |
| Q3_K_M | 66.24 GiB | 67.1 | 67.2 | 67.3 | 67.6 | 68.2 | 69.4 |
| IQ4_XS | 62.40 GiB | 63.3 | 63.3 | 63.5 | 63.8 | 64.4 | 65.6 |
| I1-IQ3_M | 62.16 GiB | 63.0 | 63.1 | 63.3 | 63.6 | 64.2 | 65.4 |
| I1-Q2_K_S | 62.06 GiB | 62.9 | 63.0 | 63.2 | 63.5 | 64.1 | 65.3 |
| I1-Q4_0 | 61.90 GiB | 62.8 | 62.9 | 63.0 | 63.3 | 63.9 | 65.1 |
| I1-IQ4_XS | 61.65 GiB | 62.5 | 62.6 | 62.8 | 63.1 | 63.7 | 64.8 |
| I1-IQ2_M | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-IQ2_S | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-IQ3_S | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-IQ3_XS | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-IQ3_XXS | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-Q2_K | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| Q2_K | 61.61 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-Q3_K_S | 61.60 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| Q3_K_S | 61.60 GiB | 62.5 | 62.6 | 62.7 | 63.0 | 63.6 | 64.8 |
| I1-IQ2_XS | 61.55 GiB | 62.4 | 62.5 | 62.7 | 63.0 | 63.6 | 64.7 |
| I1-IQ1_M | 61.54 GiB | 62.4 | 62.5 | 62.6 | 62.9 | 63.5 | 64.7 |
| I1-IQ1_S | 61.54 GiB | 62.4 | 62.5 | 62.6 | 62.9 | 63.5 | 64.7 |
| I1-IQ2_XXS | 61.54 GiB | 62.4 | 62.5 | 62.6 | 62.9 | 63.5 | 64.7 |
Figures are GiB of total memory: weights plus KV cache plus compute buffer and backend overhead. Weights and KV are near-exact; the overhead term is modeled. Hover any cell for the breakdown.
Why there are no speeds on this page
A capacity is not a card. Whether a model fits depends only on memory, so every figure above holds for any 32GB accelerator. How fast it runs depends on memory bandwidth, which varies several-fold between cards of the same capacity — so putting a tokens-per-second number here would be inventing one. Pick a specific card from hardware and the speed column appears.
Why other calculators disagree
A parameters × bits ÷ 8 estimate ignores two things that dominate at long context. First, the weights themselves are not the nominal rate — quantizations are mixtures, so the real file is consistently larger than the label implies. Second, most of this model's layers cache only a 128-token window rather than the full context.