RTX A4500
RTX A4500 has 20 GB of VRAM at 640 GB/s — about 18.60 GiB usable after driver and compositor overhead. 1945 of 2118 indexed models fit at 16K context with q4_0 KV.
What fits at 16K context
| Model | Best quant | Params | Weights● | KV● | Total in memory◐ | Headroom◐ | tok/s◐ |
|---|---|---|---|---|---|---|---|
| Gemma-4-Gembrain-X-Core-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Gembrain-X-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-31B-Isometry-Fabled-Persona | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Versipellis-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma4-Gutenberg-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| G4-MeroMero-31B-uncensored-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Novelist-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Wanabi-Gemma4-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| G4-Alice-v1.2-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Agares-31B-v1 | I1-Q4_0 | 30.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma4-Gutenberg-31B-Heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-Ortenzya-The-Creative-Wordsmith-31B-it-uncensored-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Gemsicle-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Gembrain-31B-it-uncensored-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Melinoe-Gemma4-31B-VL-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| G4-MeroMero-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Glistening-Gem-31B-v1.0 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Melinoe-Gemma4-31B-VL | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-31B-Storymaxxed3 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Huihui-gemma-4-31B-it-qat-q4_0-unquantized-abliterated | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-Queen-it-qat-q4_0-unquantized | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-qat-q4_0-unquantized-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-AssGuard-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| copywriter-gemma4-31b | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-heretic-finetune | I1-Q4_0 | 30.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Garnet-V2-31B-it-ultra-uncensored-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-abliterated-v3 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-noloop | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Webs-Sejong-31B-v7 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Lilith-31B-v1.0 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| JGOS-31B-Think | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-Mergemaxxed | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| K1-v6-zero | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Queen-31B-it-uncensored-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Sphinsikus-Chronist-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-heretic | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma4-31B-Finetuned-V2 | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-31B-storymaxxed | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-31B-storymaxxed2 | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-Grand-Horror-X-INTENSE-HERETIC-UNCENSORED-Thinking | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-Mystery-Fine-Tune-HERETIC-UNCENSORED-Thinking | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-The-DECKARD-HERETIC-UNCENSORED-Thinking | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Huihui-gemma-4-31B-it-abliterated-v2 | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-Queen-31B-it | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-it-abliterated | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31b-it-heretic-ara | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Monika-31B | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Gemma-4-31B-Fable-Coder | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B-anthology | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| Omni-31B-Turkish-Reasoning-Model | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31b-kairos | I1-Q4_0 | 31.3B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| gemma-4-31B | I1-Q4_0 | 32.7B | 16.49 GiB | 1.03 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| NVIDIA-Nemotron-Nano-9B-v2 | BF16 | 8.9B | 16.57 GiB | 0.98 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| openNemo-9B-abliterated | BF16 | 8.9B | 16.57 GiB | 0.98 GiB | 18.60 GiB | 0.00 GiB | 21±22% |
| command-r-35b-writer-v2 | I1-Q2_K_S | 35.0B | 11.86 GiB | 5.63 GiB | 18.59 GiB | 0.01 GiB | 21±22% |
| dolphin-2.6-mixtral-8x7bMoE | I1-IQ3_XXS | 46.7B | 16.99 GiB | 0.56 GiB | 18.59 GiB | 0.01 GiB | 37±37% |
| xLAM-8x7b-rMoE | IQ3_XXS | 46.7B | 16.99 GiB | 0.56 GiB | 18.59 GiB | 0.01 GiB | 37±37% |
| 14B | Q8_0 | 14.2B | 14.02 GiB | 3.52 GiB | 18.59 GiB | 0.01 GiB | 21±22% |
| EXAONE-4.0-32B | Q4_0 | 32.0B | 16.96 GiB | 0.52 GiB | 18.58 GiB | 0.02 GiB | 21±22% |
| magnum-v2-32b | IQ4_XS | 32.5B | 16.35 GiB | 1.13 GiB | 18.58 GiB | 0.02 GiB | 21±22% |
Speed is modeled, not measured: decode is memory-bandwidth bound, so tokens per second is bytes read per token against achievable bandwidth. Mixture-of-experts models carry a wider band because only the routed experts are read each step, and few have been measured publicly.
Measured on this card
| Workload◍ | Median | Middle 50% | Runs |
|---|---|---|---|
| Image generation | 15.27 it/s | 11.41–18.32 | 100 |
| Prompt processing | 2862.73 tok/s | 2484.22–3293.50 | 14 |
| Text generation | 95.99 tok/s | 92.45–96.80 | 12 |
Aggregated from community-submitted runs, so the spread is wide by nature — it covers different models, resolutions, step counts and settings, not one controlled configuration. Read the middle 50% rather than the median alone. These figures are reproduced with attribution from vladmandic-sd-data-benchmark, which publishes no licence — so we display and link rather than redistribute them.
Questions people ask
- What AI models can a RTX A4500 run?
- 1945 of 2118 indexed open-weight models fit a RTX A4500 at 16,384 context with q4_0 KV cache, the largest being Gemma-4-Gembrain-X-Core-31B at I1-Q4_0. That covers text, vision-language, image, video and speech models.
- How much usable memory does a RTX A4500 actually have?
- Its nameplate is 20 GB, but about 18.60 GiB is available to a model once driver and compositor overhead is accounted for.
- Is a RTX A4500 fast for local AI?
- Its memory bandwidth is 640 GB/s, and that figure — not teraflops — is what governs token generation speed. Capacity decides what you can run; bandwidth decides how fast it runs.