Gemma 4 26B A4B IT Ultra Uncensored Heretic — Hardware Requirements & GPU Compatibility
Vision
Gemma 4 26B A4B IT Ultra Uncensored Heretic is a 25.8B-parameter open language model from llmfan46 in the Gemma 4 family. It supports a context window of up to 262,144 tokens. At Q4_K_M it needs about 16.13 GB of VRAM — see which GPUs and Macs can run it below.
2.4K downloads
37 likesSpecifications
- Publisher
- llmfan46
- Family
- Gemma 4
- Parameters
- 25.8B
- Architecture
- Gemma4ForConditionalGeneration
- Context Length
- 262,144 tokens
- Vocabulary Size
- 262,144
- Release Date
- 2026-04-07
- License
- Apache 2.0
Get Started
How Much VRAM Does Gemma 4 26B A4B IT Ultra Uncensored Heretic Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| Q2_Kest. | 3.40 | 11.6 GB | 55.6 GB | 10.97 GB | 2-bit quantization with K-quant improvements |
| Q3_K_M | 3.90 | 13.2 GB | 57.2 GB | 12.58 GB | 3-bit medium quantization |
| Q3_K_L | 4.10 | 13.9 GB | 57.8 GB | 13.23 GB | 3-bit large quantization |
| Q4_K_S | 4.50 | 15.2 GB | 59.1 GB | 14.52 GB | 4-bit small quantization |
| Q4_K_M | 4.80 | 16.1 GB | 60.1 GB | 15.48 GB | 4-bit medium quantization — most popular sweet spot |
| Q5_K_S | 5.50 | 18.4 GB | 62.3 GB | 17.74 GB | 5-bit small quantization |
| Q5_K_M | 5.70 | 19.0 GB | 63.0 GB | 18.39 GB | 5-bit medium quantization — good quality/size tradeoff |
| Q6_K | 6.60 | 21.9 GB | 65.9 GB | 21.29 GB | 6-bit quantization, very good quality |
| Q8_0 | 8.00 | 26.4 GB | 70.4 GB | 25.81 GB | 8-bit quantization, near-lossless |
| BF16 | 16.00 | 52.3 GB | 96.2 GB | 51.61 GB | Brain floating point 16 — preferred for training |
est.= calculated VRAM estimate; no published GGUF file found for that quantization yet. Other rows are verified against real community uploads.
Which GPUs Can Run Gemma 4 26B A4B IT Ultra Uncensored Heretic?
Q4_K_M · 16.1 GBGemma 4 26B A4B IT Ultra Uncensored Heretic (Q4_K_M) requires 16.1 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 21+ GB is recommended. Using the full 262K context window can add up to 44.0 GB, bringing total usage to 60.1 GB. 8 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti.
Runs great
— Plenty of headroom
Which Devices Can Run Gemma 4 26B A4B IT Ultra Uncensored Heretic?
Q4_K_M · 16.1 GB41 devices with unified memory can run Gemma 4 26B A4B IT Ultra Uncensored Heretic, including NVIDIA DGX H100, NVIDIA DGX A100 640GB, Mac Mini M4 Pro (24 GB).
Runs great
— Plenty of headroomDecent
— Enough memory, may be tightWhere to Download Gemma 4 26B A4B IT Ultra Uncensored Heretic
Community quantizations of this model — GGUF for llama.cpp, Ollama, and LM Studio, plus AWQ/MLX variants where available.
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Frequently Asked Questions
- How much VRAM does Gemma 4 26B A4B IT Ultra Uncensored Heretic need?
Gemma 4 26B A4B IT Ultra Uncensored Heretic requires 16.1 GB of VRAM at Q4_K_M, or 52.3 GB at BF16. Full 262K context adds up to 44.0 GB (60.1 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 25.8B × 4.8 bits ÷ 8 = 15.5 GB
KV Cache + Overhead ≈ 0.6 GB (at 2K context + ~0.3 GB framework)
KV Cache + Overhead ≈ 44.6 GB (at full 262K context)
VRAM usage by quantization
Q4_K_M16.1 GBQ4_K_M + full context60.1 GB- Can NVIDIA GeForce RTX 4090 run Gemma 4 26B A4B IT Ultra Uncensored Heretic?
Yes, at Q6_K (21.9 GB) or lower. Higher quantizations like Q8_0 (26.4 GB) exceed the NVIDIA GeForce RTX 4090's 24 GB.
- What's the best quantization for Gemma 4 26B A4B IT Ultra Uncensored Heretic?
For Gemma 4 26B A4B IT Ultra Uncensored Heretic, Q4_K_M (16.1 GB) offers the best balance of quality and VRAM usage. Q5_K_S (18.4 GB) provides better quality if you have the VRAM. The smallest option is Q2_K at 11.6 GB.
VRAM requirement by quantization
Q2_K11.6 GBQ3_K_L13.9 GBQ4_K_M ★16.1 GBQ5_K_S18.4 GBQ6_K21.9 GBBF1652.3 GB★ Recommended — best balance of quality and VRAM usage.
- Can I run Gemma 4 26B A4B IT Ultra Uncensored Heretic on a Mac?
Gemma 4 26B A4B IT Ultra Uncensored Heretic requires at least 11.6 GB at Q2_K, which exceeds the unified memory of most consumer Macs. You would need a Mac Studio or Mac Pro with a high-memory configuration.
- Can I run Gemma 4 26B A4B IT Ultra Uncensored Heretic locally?
Yes — Gemma 4 26B A4B IT Ultra Uncensored Heretic can run locally on consumer hardware. At Q4_K_M quantization it needs 16.1 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- How fast is Gemma 4 26B A4B IT Ultra Uncensored Heretic?
At Q4_K_M, Gemma 4 26B A4B IT Ultra Uncensored Heretic can reach ~273 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~41 tok/s. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.
tok/s = (bandwidth GB/s ÷ model GB) × efficiency
Example: NVIDIA B200 → 8000 ÷ 16.1 × 0.65 = ~322 tok/s
Estimated speed at Q4_K_M (16.1 GB)
~322 tok/s~41 tok/s~322 tok/s~273 tok/sReal-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.
- What's the download size of Gemma 4 26B A4B IT Ultra Uncensored Heretic?
At Q4_K_M, the download is about 15.48 GB. The full-precision BF16 version is 51.61 GB. The smallest option (Q2_K) is 10.97 GB.
- Which GPUs can run Gemma 4 26B A4B IT Ultra Uncensored Heretic?
8 consumer GPUs can run Gemma 4 26B A4B IT Ultra Uncensored Heretic at Q4_K_M (16.1 GB). Top options include NVIDIA GeForce RTX 5090, AMD Radeon RX 7900 XT, AMD Radeon RX 7900 XTX. 1 GPU have plenty of headroom for comfortable inference.
- Which devices can run Gemma 4 26B A4B IT Ultra Uncensored Heretic?
41 devices with unified memory can run Gemma 4 26B A4B IT Ultra Uncensored Heretic at Q4_K_M (16.1 GB), including AMD Ryzen AI 9 HX 370 (Strix Point) Laptop, ASUS Ascent GX10, Asus ROG Flow Z13 (2025, Ryzen AI Max+ 395, 128 GB), Beelink GTR9 Pro (Ryzen AI Max+ 395, 128 GB). Apple Silicon Macs use unified memory shared between CPU and GPU, making them well-suited for local LLM inference.