Does cogito-v2-preview-deepseek-671B-MoE fit in 24GB of VRAM?
Not at these settings. No indexed quantization of cogito-v2-preview-deepseek-671B-MoE fits 24GB card at any context we compute, with q8_0 KV. The smallest shipped quantization is 150.73 GiB in weights alone, against 22.32 GiB usable. CPU offload can still run it, slowly.
Every quantization at every context
| Quant | Weights● | 4K◐ | 8K◐ | 16K◐ | 32K◐ | 64K◐ | 128K◐ |
|---|---|---|---|---|---|---|---|
| BF16 | 1250.08 GiB | 1251.1 | 1251.2 | 1251.5 | 1252.1 | 1253.2 | 1255.5 |
| Q8_0 | 664.29 GiB | 665.3 | 665.5 | 665.7 | 666.3 | 667.5 | 669.7 |
| Q6_K | 513.20 GiB | 514.2 | 514.4 | 514.6 | 515.2 | 516.4 | 518.6 |
| Q5_K_M | 443.10 GiB | 444.1 | 444.3 | 444.5 | 445.1 | 446.3 | 448.5 |
| Q5_K_S | 430.45 GiB | 431.5 | 431.6 | 431.9 | 432.5 | 433.6 | 435.9 |
| Q4_1 | 391.51 GiB | 392.5 | 392.7 | 393.0 | 393.5 | 394.7 | 396.9 |
| Q4_K_M | 377.13 GiB | 378.1 | 378.3 | 378.6 | 379.1 | 380.3 | 382.6 |
| Q4_K_S | 354.38 GiB | 355.4 | 355.5 | 355.8 | 356.4 | 357.5 | 359.8 |
| Q4_0 | 353.48 GiB | 354.5 | 354.6 | 354.9 | 355.5 | 356.6 | 358.9 |
| IQ4_NL | 352.57 GiB | 353.6 | 353.7 | 354.0 | 354.6 | 355.7 | 358.0 |
| IQ4_XS | 333.13 GiB | 334.2 | 334.3 | 334.6 | 335.1 | 336.3 | 338.6 |
| Q3_K_M | 297.88 GiB | 298.9 | 299.0 | 299.3 | 299.9 | 301.0 | 303.3 |
| Q3_K_S | 269.83 GiB | 270.8 | 271.0 | 271.3 | 271.8 | 273.0 | 275.3 |
| Q2_K_L | 228.17 GiB | 229.2 | 229.3 | 229.6 | 230.2 | 231.3 | 233.6 |
| Q2_K | 227.97 GiB | 229.0 | 229.1 | 229.4 | 230.0 | 231.1 | 233.4 |
| UD-IQ2_M | 212.82 GiB | 213.8 | 214.0 | 214.3 | 214.8 | 216.0 | 218.3 |
| UD-IQ2_XXS | 201.88 GiB | 202.9 | 203.0 | 203.3 | 203.9 | 205.0 | 207.3 |
| UD-IQ1_M | 186.85 GiB | 187.9 | 188.0 | 188.3 | 188.9 | 190.0 | 192.3 |
| UD-IQ1_S | 173.12 GiB | 174.1 | 174.3 | 174.6 | 175.1 | 176.3 | 178.6 |
| UD-TQ1_0 | 150.73 GiB | 151.7 | 151.9 | 152.2 | 152.7 | 153.9 | 156.2 |
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 24GB 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, this model uses latent attention and allocates no V cache at all, so any formula reading num_key_value_heads overstates its cache by more than an order of magnitude.