Huihui-gpt-oss-20b-BF16-abliterated
huihui-ai/Huihui-gpt-oss-20b-BF16-abliteratedHuihui-gpt-oss-20b-BF16-abliterated at Q4_K_M is exactly 11,673,418,400 bytes (10.87 GiB / 11.67 GB) — an effective 4.465 bits per weight, not the nominal 4. Its KV cache at 32K is 0.77 GiB, not the 1.50 GiB a flat formula predicts.
Shipped quantizations
| Quant | Size● | Exact bytes● | Effective bpw● | Tensors● | Publisher |
|---|---|---|---|---|---|
| Q3_K_L | 10.70 GiB | 11,488,222,880 | 4.394 | — | bartowski |
| IQ2_XS | 10.72 GiB | 11,510,341,280 | 4.403 | — | bartowski |
| IQ2_XXS | 10.72 GiB | 11,510,341,280 | 4.403 | — | bartowski |
| Q4_0 | 10.73 GiB | 11,519,188,640 | 4.406 | — | bartowski |
| IQ2_S | 10.75 GiB | 11,545,730,720 | 4.416 | — | bartowski |
| IQ2_M | 10.75 GiB | 11,545,730,720 | 4.416 | — | bartowski |
| Q3_K_S | 10.76 GiB | 11,554,578,080 | 4.420 | — | bartowski |
| IQ3_M | 10.77 GiB | 11,559,001,760 | 4.421 | — | bartowski |
| IQ3_XS | 10.77 GiB | 11,559,001,760 | 4.421 | — | bartowski |
| IQ3_XXS | 10.77 GiB | 11,559,001,760 | 4.421 | — | bartowski |
| Q2_K | 10.77 GiB | 11,559,001,760 | 4.421 | — | bartowski |
| Q3_K_M | 10.77 GiB | 11,559,186,080 | 4.421 | — | bartowski |
| IQ4_NL | 10.77 GiB | 11,561,213,600 | 4.422 | — | bartowski |
| IQ4_XS | 10.77 GiB | 11,561,213,600 | 4.422 | — | bartowski |
| Q4_1 | 10.80 GiB | 11,592,985,760 | 4.434 | — | bartowski |
| Q4_K_S | 10.87 GiB | 11,667,151,520 | 4.463 | — | bartowski |
| Q4_K_M | 10.87 GiB | 11,673,418,400 | 4.465 | — | bartowski |
| Q5_K_S | 10.92 GiB | 11,722,885,280 | 4.484 | — | bartowski |
| Q5_K_M | 10.92 GiB | 11,728,414,880 | 4.486 | — | bartowski |
| Q2_K_L | 11.03 GiB | 11,848,568,480 | 4.532 | — | bartowski |
| Q4_K_L | 11.07 GiB | 11,890,593,440 | 4.548 | — | bartowski |
| Q5_K_L | 11.09 GiB | 11,909,394,080 | 4.555 | — | bartowski |
| Q6_K_L | 11.21 GiB | 12,040,998,560 | 4.606 | — | bartowski |
| Q6_K | 11.21 GiB | 12,040,998,560 | 4.606 | — | bartowski |
| Q3_K_M | 12.03 GiB | 12,916,149,728 | 4.941 | — | huihui-ai |
| Q4_K_M | 14.72 GiB | 15,805,135,328 | 6.045 | — | huihui-ai |
| Q8_0 | 20.73 GiB | 22,261,911,008 | 8.515 | — | huihui-ai |
| Q8_0 | 20.73 GiB | 22,261,911,200 | 8.515 | — | bartowski |
| BF16 | 38.99 GiB | 41,860,886,880 | 16.012 | — | bartowski |
| F16 | 38.99 GiB | 41,860,887,008 | 16.012 | — | huihui-ai |
| IQ4_NL7 shards | 78.58 GiB | 84,375,324,928 | 32.274 | — | DavidAU |
| Q5_16 shards | 88.57 GiB | 95,097,431,712 | — | — | DavidAU |
| Q8_05 shards | 102.72 GiB | 110,296,072,288 | — | — | DavidAU |
KV cache by context
| Context | KV cache (f16)● | Flat formula | Overstated by | Full / windowed / recurrent |
|---|---|---|---|---|
| 4,096 | 0.11 GiB | 0.19 GiB | 1.68× | 12 / 12 / 0 |
| 8,192 | 0.21 GiB | 0.38 GiB | 1.83× | 12 / 12 / 0 |
| 16,384 | 0.39 GiB | 0.75 GiB | 1.91× | 12 / 12 / 0 |
| 32,768 | 0.77 GiB | 1.50 GiB | 1.95× | 12 / 12 / 0 |
| 65,536 | 1.52 GiB | 3.00 GiB | 1.98× | 12 / 12 / 0 |
| 131,072 | 3.02 GiB | 6.00 GiB | 1.99× | 12 / 12 / 0 |
12 of 24 layers cache only a 128-token window rather than the full context, on a period of . Figures assume the default configuration; --swa-full disables the saving entirely.
Compare with
Will it run on your card?
Why other calculators give a different number
A parameters × bits ÷ 8 estimate puts Q4_K_M at roughly 10.96 GiB. The real file is 10.87 GiB, because a quantization is a mixture and some tensors are always kept at higher precision. The larger discrepancy is the cache: a flat formula gives 1.50 GiB at 32K context where the real figure is 0.77 GiB, because most of this model's layers cache a fixed window rather than the whole context.
Architecture
Questions people ask
- How much VRAM does Huihui-gpt-oss-20b-BF16-abliterated need?
- Q4_K_M is exactly 11,673,418,400 bytes (10.87 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
- How large is Huihui-gpt-oss-20b-BF16-abliterated's KV cache?
- 0.77 GiB at 32K context with an f16 cache, computed per layer. Quantizing the cache to q8_0 roughly halves it, which is often the difference between a context length fitting and not.
- Is Huihui-gpt-oss-20b-BF16-abliterated a mixture-of-experts model?
- Yes — 32 experts, 4 routed per token. Every expert must be resident, but only the routed ones are read per token, which is why its memory requirement and its speed behave very differently.
- Which quantization of Huihui-gpt-oss-20b-BF16-abliterated should I use?
- Q4_K_M is the usual default. Pick the largest quantization that fits your card at the context you actually need — the table above gives exact sizes for every one published.