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IBMGraniteGraniteMoeForCausalLM

Granite 3.0 1B A400m Instruct — Hardware Requirements & GPU Compatibility

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Granite 3.0 1B A400m Instruct is a 1.3B-parameter open language model from IBM in the Granite family. It supports a context window of up to 4,096 tokens. At Q4_K_M it needs about 1.20 GB of VRAM — see which GPUs and Macs can run it below.

1.3B params · MoE0.4B active4K contextApache 2.046.1K downloads21 likes3.2K quant downloads
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Runs great on a 24 GB GPU

Runs from8 GB Q4_K_M · 4KBest on24 GB Q4_K_M · ~524 tok/s · 4KMacs from8 GB Q4_K_M · ~98 tok/s

Apache 2.0

Reference GPU · RTX 4090 24 GB

Estimates, ±20% · how we estimate

Run Granite 3.0 1B A400m Instruct

One recommended way. Every other method, OS and quant is in the step-by-step guide.Each way opens a step-by-step guide for your OS and quant.

Recommended

Ollama
one command · needs Ollama installed
$ollama run hf.co/bartowski/granite-3.0-1b-a400m-instruct-GGUF:Q4_K_M

Q4_K_M fits fully on the RTX 4090 · 22.7 GB free · 4K context

Download: granite-3.0-1b-a400m-instruct-Q4_K_M.gguf0.82 GBbartowski

install, OS, other quants

Ways to runOther ways

each opens step-by-step

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Your own private copy · Q4_K_M · 24 GB GPU

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How Much VRAM Does Granite 3.0 1B A400m Instruct Need?

Select a quantization level; the listed hardware adheres to it.

QuantizationVRAM+32KOn RTX 4090 (reference)
1.0 GB—2-bit · K-quant — 2-bit quantization with K-quant improvementsFits: 4K context · ~557 tok/s
1.0 GB—3-bit small — 3-bit small quantizationFits: 4K context · ~555 tok/s
1.1 GB—3-bit medium — 3-bit medium quantizationFits: 4K context · ~545 tok/s
1.1 GB—4-bit · legacy — 4-bit legacy quantizationFits: 4K context · ~542 tok/s
1.2 GB—4-bit medium — 4-bit medium quantization — most popular sweet spotFits: 4K context · ~524 tok/s
1.4 GB—5-bit medium — 5-bit medium quantization — good quality/size tradeoffFits: 4K context · ~505 tok/s
1.5 GB—6-bit, very good — 6-bit quantization, very good qualityFits: 4K context · ~487 tok/s
1.7 GB—8-bit, near-lossless — 8-bit quantization, near-losslessFits: 4K context · ~460 tok/s
est.calculated, no published file yet

Selected Q4_K_M

4-bit medium quantization

1.3GBat 4K context

Weights
0.8 GB
KV cache
0.2 GB
Overhead
0.3 GB

Fits RTX 4090 (reference) · 22.7 GB free · ~524 tok/s

≥50 tok/s needs ≥32 GB/s · RTX 5090 ~606, RTX 3090 Ti ~524

Which Hardware Can Run Granite 3.0 1B A400m Instruct?

Q4_K_M · 1.2 GB

Granite 3.0 1B A400m Instruct (Q4_K_M) requires 1.2 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 2+ GB is recommended. Using the full 4K context window can add up to 0.1 GB, bringing total usage to 1.3 GB. 52 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti. 163 devices with unified memory can run Granite 3.0 1B A400m Instruct, including NVIDIA DGX Spark, NVIDIA Jetson AGX Thor Developer Kit.

By VRAM tier · typical GPUs and Macs at Q4_K_M
8 GB · RTX 4060Q4_K_M · 1.3 GB · ~286 tok/s · 4K8 GB tier →
12 GB · RTX 3060 12GBQ4_K_M · 1.3 GB · ~337 tok/s · 4K12 GB tier →
16 GB · RTX 5060 Ti 16GBQ4_K_M · 1.3 GB · ~378 tok/s · 4K16 GB tier →
24 GB · RTX 4090referenceQ4_K_M · 1.3 GB · ~524 tok/s · 4K24 GB tier →
Mac 32 GB · Mac Mini M4Q4_K_M · 1.3 GB · ~107 tok/s · 4KMacs →
Mac 64 GB · Mac Studio M4 MaxQ4_K_M · 1.3 GB · ~172 tok/s · 4KMacs →

Alternatives to Granite 3.0 1B A400m Instruct

Granite family · 28 models →

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Ouro 1.4BByteDance—6.4 GB~184same size
Ilama 3.2 1Bhmellor—3.3 GB~231same size

Specifications

Publisher
IBM
Family
Granite
Parameters
1.3B
Active parameters
0.4B per token
Architecture
GraniteMoeForCausalLM
Context Length
4,096 tokens
Vocabulary Size
49,155
Release Date
2024-10-03
License
Apache 2.0

Frequently Asked Questions

How much VRAM does Granite 3.0 1B A400m Instruct need?

Granite 3.0 1B A400m Instruct requires 1.2 GB of VRAM at Q4_K_M, or 3.1 GB at BF16.

VRAM = Weights + KV Cache + Overhead

Weights = 1.3B × 4.8 bits ÷ 8 = 0.8 GB

KV Cache + Overhead ≈ 0.4 GB (at 2K context + ~0.3 GB framework)

Fit ratings and hardware model lists check this model with room for a 16K-token context, which needs a little more memory.

KV Cache + Overhead ≈ 0.5 GB (at full 4K context)

VRAM usage by quantization

1.2 GB
1.3 GB

Learn more about VRAM estimation →

What's the best quantization for Granite 3.0 1B A400m Instruct?

For Granite 3.0 1B A400m Instruct, Q4_K_M (1.2 GB) offers the best balance of quality and VRAM usage. Q4_K_L (1.2 GB) provides better quality if you have the VRAM. The smallest option is IQ2_XXS at 0.8 GB.

VRAM requirement by quantization

IQ2_XXS
0.8 GB
IQ3_S
1.0 GB
Q4_0
1.1 GB
Q4_K_M ★
1.2 GB
Q5_K_S
1.3 GB
BF16
3.1 GB

★ Recommended — best balance of quality and VRAM usage.

Learn more about quantization →

Can I run Granite 3.0 1B A400m Instruct on a Mac?

Yes — MacBook Air 13" M3 (8 GB) and 145 other Macs can run Granite 3.0 1B A400m Instruct. Apple Silicon uses unified memory, so the model shares RAM with the system. At Q4_K_M you need at least 1.2 GB of usable unified memory (RAM minus macOS overhead).

Can I run Granite 3.0 1B A400m Instruct locally?

Yes — Granite 3.0 1B A400m Instruct can run locally on consumer hardware. Popular tools include Ollama, LM Studio, and llama.cpp.

How fast is Granite 3.0 1B A400m Instruct?

At Q4_K_M, Granite 3.0 1B A400m Instruct can reach ~205 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~524 tok/s. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.

tok/s = 1000 ÷ (active GB ÷ (bandwidth GB/s × efficiency) × 1000 + layers × routing ms)

Mixture-of-Experts: just the active experts get read for each token, along with a fixed routing cost per layer.

Example: NVIDIA B200 → 0.4 GB active ÷ (8000 × 0.65) = 0.074 ms, plus 24 layers × 0.055 ms = 1.320 ms, so 1000 ÷ 1.394 ms = ~717 tok/s

Estimated speed at Q4_K_M (1.2 GB)

~717 tok/s
~524 tok/s
~717 tok/s
~694 tok/s

Real-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.

Learn more about tok/s estimation →

What's the download size of Granite 3.0 1B A400m Instruct?

At Q4_K_M, the download is about 0.80 GB. The full-precision BF16 version is 2.67 GB. The smallest option (IQ2_XXS) is 0.37 GB.

Which GPUs can run Granite 3.0 1B A400m Instruct?

52 consumer GPUs can run Granite 3.0 1B A400m Instruct at Q4_K_M. Top options include AMD Radeon RX 6700 XT, AMD Radeon RX 6800, AMD Radeon RX 6800 XT. 52 GPUs have plenty of headroom for comfortable inference.

Which devices can run Granite 3.0 1B A400m Instruct?

163 devices with unified memory can run Granite 3.0 1B A400m Instruct at Q4_K_M (1.2 GB), including AMD Ryzen AI 9 HX 370 (Strix Point) Laptop, ASUS Ascent GX10, Beelink GTR9 Pro (Ryzen AI Max+ 395, 128 GB), Framework Desktop (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.