Parable Granite 4.1 8B Claude Fable 5 — Hardware Requirements & GPU Compatibility
ChatReasoning
Parable Granite 4.1 8B Claude Fable 5 is a 8.4B-parameter open language model from AnkitAI in the Granite family. It supports a context window of up to 131,072 tokens. At Q4_K_M it needs about 5.66 GB of VRAM — see which GPUs and Macs can run it below.
1.2K downloads
2 likesSpecifications
- Publisher
- AnkitAI
- Family
- Granite
- Parameters
- 8.4B
- Architecture
- GraniteForCausalLM
- Context Length
- 131,072 tokens
- Vocabulary Size
- 100,352
- Release Date
- 2026-07-13
- License
- Apache 2.0
Get Started
How Much VRAM Does Parable Granite 4.1 8B Claude Fable 5 Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| Q2_Kest. | 3.40 | 4.2 GB | 25.3 GB | 3.56 GB | 2-bit quantization with K-quant improvements |
| Q3_K_Mest. | 3.90 | 4.7 GB | 25.9 GB | 4.09 GB | 3-bit medium quantization |
| Q4_K_Mest. | 4.80 | 5.7 GB | 26.8 GB | 5.03 GB | 4-bit medium quantization — most popular sweet spot |
| Q5_K_Mest. | 5.70 | 6.6 GB | 27.8 GB | 5.97 GB | 5-bit medium quantization — good quality/size tradeoff |
| Q6_Kest. | 6.60 | 7.5 GB | 28.7 GB | 6.91 GB | 6-bit quantization, very good quality |
| Q8_0est. | 8.00 | 9.0 GB | 30.2 GB | 8.38 GB | 8-bit quantization, near-lossless |
| FP16est. | 16.00 | 17.4 GB | 38.5 GB | 16.76 GB | Full half-precision — baseline for inference |
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 Parable Granite 4.1 8B Claude Fable 5?
Q4_K_M · 5.7 GBParable Granite 4.1 8B Claude Fable 5 (Q4_K_M) requires 5.7 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 8+ GB is recommended. Using the full 131K context window can add up to 21.1 GB, bringing total usage to 26.8 GB. 50 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti, NVIDIA GeForce RTX 3070 Ti.
Runs great
— Plenty of headroom
Decent
— Enough VRAM, may be tightWhich Devices Can Run Parable Granite 4.1 8B Claude Fable 5?
Q4_K_M · 5.7 GB58 devices with unified memory can run Parable Granite 4.1 8B Claude Fable 5, including NVIDIA DGX H100, NVIDIA DGX A100 640GB, MacBook Air 13" M3 (8 GB).
Runs great
— Plenty of headroomRelated Models
Frequently Asked Questions
- How much VRAM does Parable Granite 4.1 8B Claude Fable 5 need?
Parable Granite 4.1 8B Claude Fable 5 requires 5.7 GB of VRAM at Q4_K_M, or 17.4 GB at FP16. Full 131K context adds up to 21.1 GB (26.8 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 8.4B × 4.8 bits ÷ 8 = 5 GB
KV Cache + Overhead ≈ 0.7 GB (at 2K context + ~0.3 GB framework)
KV Cache + Overhead ≈ 21.8 GB (at full 131K context)
VRAM usage by quantization
Q4_K_M5.7 GBQ4_K_M + full context26.8 GB- What's the best quantization for Parable Granite 4.1 8B Claude Fable 5?
For Parable Granite 4.1 8B Claude Fable 5, Q4_K_M (5.7 GB) offers the best balance of quality and VRAM usage. Q5_K_M (6.6 GB) provides better quality if you have the VRAM. The smallest option is Q2_K at 4.2 GB.
VRAM requirement by quantization
Q2_K4.2 GBQ4_K_M ★5.7 GBQ5_K_M6.6 GBQ6_K7.5 GBQ8_09.0 GBFP1617.4 GB★ Recommended — best balance of quality and VRAM usage.
- Can I run Parable Granite 4.1 8B Claude Fable 5 on a Mac?
Parable Granite 4.1 8B Claude Fable 5 requires at least 4.2 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 Parable Granite 4.1 8B Claude Fable 5 locally?
Yes — Parable Granite 4.1 8B Claude Fable 5 can run locally on consumer hardware. At Q4_K_M quantization it needs 5.7 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- How fast is Parable Granite 4.1 8B Claude Fable 5?
At Q4_K_M, Parable Granite 4.1 8B Claude Fable 5 can reach ~777 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~116 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 ÷ 5.7 × 0.65 = ~919 tok/s
Estimated speed at Q4_K_M (5.7 GB)
~919 tok/s~116 tok/s~919 tok/s~777 tok/sReal-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.
- What's the download size of Parable Granite 4.1 8B Claude Fable 5?
At Q4_K_M, the download is about 5.03 GB. The full-precision FP16 version is 16.76 GB. The smallest option (Q2_K) is 3.56 GB.
- Which GPUs can run Parable Granite 4.1 8B Claude Fable 5?
50 consumer GPUs can run Parable Granite 4.1 8B Claude Fable 5 at Q4_K_M (5.7 GB). Top options include AMD Radeon RX 6700 XT, AMD Radeon RX 6800, AMD Radeon RX 6800 XT, AMD Radeon RX 7600. 39 GPUs have plenty of headroom for comfortable inference.
- Which devices can run Parable Granite 4.1 8B Claude Fable 5?
59 devices with unified memory can run Parable Granite 4.1 8B Claude Fable 5 at Q4_K_M (5.7 GB), including AMD Ryzen AI 9 HX 370 (Strix Point) Laptop, ASUS Ascent GX10, Apple iPhone 17 Pro, Asus ROG Flow Z13 (2025, 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.