Gemma 4 19B vs Gemma 3 12B IT Heretic v2
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| Gemma 4 19B | Gemma 3 12B IT Heretic v2 | |
|---|---|---|
| Parameters | 19.0B | 12.2B |
| Context | 262K | 131K |
| Architecture | Gemma4ForConditionalGeneration | Gemma3ForConditionalGeneration |
| License | Gemma Terms | Gemma Terms |
| Downloads | 415 | 8.6K |
| Released | May 2026 | Mar 2026 |
VRAM by Quantization: Gemma 4 19B vs Gemma 3 12B IT Heretic v2
| Quantization | Bits | Gemma 4 19B VRAM | Gemma 3 12B IT Heretic v2 VRAM |
|---|---|---|---|
| BF16 | 16.00 | 38.7 GB | 25.4 GB |
Verdict
Gemma 3 12B IT Heretic v2 needs less VRAM at BF16 (25.4 GB vs 38.7 GB), so it fits on smaller GPUs. Gemma 4 19B supports a longer context window (262K tokens). Gemma 3 12B IT Heretic v2 is the more widely downloaded of the two.
Frequently Asked Questions
- Which needs less VRAM, Gemma 4 19B or Gemma 3 12B IT Heretic v2?
At BF16, Gemma 4 19B needs 38.7 GB and Gemma 3 12B IT Heretic v2 needs 25.4 GB, so Gemma 3 12B IT Heretic v2 is the lighter option to run locally.
- Which has a longer context window, Gemma 4 19B or Gemma 3 12B IT Heretic v2?
Gemma 4 19B supports 262,144 tokens and Gemma 3 12B IT Heretic v2 supports 131,072 tokens.
- What is the difference between Gemma 4 19B and Gemma 3 12B IT Heretic v2?
Gemma 4 19B is a 19.0B model from 0xSero (Gemma family), while Gemma 3 12B IT Heretic v2 is a 12.2B model from DreamFast (Gemma family). Compare their VRAM requirements above to see which fits your GPU or Mac.