WizardLM 2 8x22B vs AFM 4.5B
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| WizardLM 2 8x22B | AFM 4.5B | |
|---|---|---|
| Parameters | 140.6B | 4.6B |
| Context | 66K | 66K |
| Architecture | MixtralForCausalLM | ArceeForCausalLM |
| License | Apache 2.0 | Apache 2.0 |
| Downloads | 9.9K | 1.5K |
| Released | — | Sep 2025 |
VRAM by Quantization: WizardLM 2 8x22B vs AFM 4.5B
| Quantization | Bits | WizardLM 2 8x22B VRAM | AFM 4.5B VRAM |
|---|---|---|---|
| BF16 | 16.00 | 282.0 GB | 9.7 GB |
Verdict
AFM 4.5B needs less VRAM at BF16 (9.7 GB vs 282.0 GB), so it fits on smaller GPUs. WizardLM 2 8x22B is the more widely downloaded of the two.
Frequently Asked Questions
- Which needs less VRAM, WizardLM 2 8x22B or AFM 4.5B?
At BF16, WizardLM 2 8x22B needs 282.0 GB and AFM 4.5B needs 9.7 GB, so AFM 4.5B is the lighter option to run locally.
- Which has a longer context window, WizardLM 2 8x22B or AFM 4.5B?
WizardLM 2 8x22B supports 65,536 tokens and AFM 4.5B supports 65,536 tokens.
- What is the difference between WizardLM 2 8x22B and AFM 4.5B?
WizardLM 2 8x22B is a 140.6B model from alpindale, while AFM 4.5B is a 4.6B model from Arcee AI. Compare their VRAM requirements above to see which fits your GPU or Mac.