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BigScienceBloomForCausalLM

Bloom 560M — Hardware Requirements & GPU Compatibility

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Bloom 560M is a 559M-parameter open language model from BigScience. At Q4_K_M it needs about 0.37 GB of VRAM — see which GPUs and Macs can run it below.

559M params · densebigscience-bloom-rail-1.0377.6K downloads376 likes1.8K quant downloads
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Runs great on a 24 GB GPU

Runs from8 GB Q4_K_M · 32KBest on24 GB Q4_K_M · ~1771 tok/s · 32KMacs from8 GB Q4_K_M · ~194 tok/s

bigscience-bloom-rail-1.0

Reference GPU · RTX 4090 24 GB

Estimates, ±20% · how we estimate

Run Bloom 560M

One recommended way. Every other method, OS and quant is in the step-by-step guide.

Recommended

Ollama
one command · needs Ollama installed
$ollama run hf.co/afrideva/bloom-560m-GGUF:Q4_K_M

Q4_K_M fits fully on the RTX 4090 · 22.4 GB free · 16K context

Download: bloom-560m.q4_k_m.gguf0.56 GBafrideva

install, OS, other quants

Other ways

each opens step-by-step

Run in cloud

Fits on RTX 3060 12GB (10 GB headroom) · Q4_K_M

Generation speed
~632 tok/s
generation speed
Cost per 1M output tokens
$0.036
per 1M output tokens

How Much VRAM Does Bloom 560M Need?

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

QuantizationVRAM+32KOn RTX 4090 (reference)
0.3 GB2.9 GB2-bit · K-quant — 2-bit quantization with K-quant improvementsFits: 32K context · ~2520 tok/s
0.3 GB2.9 GB3-bit small — 3-bit small quantizationFits: 32K context · ~2427 tok/s
0.3 GB2.9 GB3-bit medium — 3-bit medium quantizationFits: 32K context · ~2184 tok/s
0.3 GB2.9 GB4-bit · legacy — 4-bit legacy quantizationFits: 32K context · ~2114 tok/s
0.4 GB3 GB4-bit medium — 4-bit medium quantization — most popular sweet spotFits: 32K context · ~1771 tok/s
0.4 GB3.1 GB5-bit medium — 5-bit medium quantization — good quality/size tradeoffFits: 32K context · ~1489 tok/s
0.5 GB3.1 GB6-bit, very good — 6-bit quantization, very good qualityFits: 32K context · ~1285 tok/s
0.6 GB3.2 GB8-bit, near-lossless — 8-bit quantization, near-losslessFits: 32K context · ~1057 tok/s
est.calculated, no published file yet

Selected Q4_K_M

4-bit medium quantization

1.6GBat 16K context

Weights
0.1 GB
KV cache
1.2 GB
Overhead
0.3 GB

Fits RTX 4090 (reference) · 22.4 GB free · ~1771 tok/s

≥50 tok/s needs ≥28 GB/s · RTX 5090 ~3148, RTX 3090 Ti ~1771

Which Hardware Can Run Bloom 560M?

Q4_K_M · 0.4 GB

Bloom 560M (Q4_K_M) requires 0.4 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 1+ GB is recommended. 52 GPUs can run it, including NVIDIA GeForce RTX 5090, NVIDIA GeForce RTX 3090 Ti. 163 devices with unified memory can run Bloom 560M, including Mac Studio (M3 Ultra, 256GB), Mac Studio (M3 Ultra, 512GB).

By VRAM tier · typical GPUs and Macs at Q4_K_M
8 GB · RTX 4060Q4_K_M · 1.6 GB · ~478 tok/s · 32K8 GB tier →
12 GB · RTX 3060 12GBQ4_K_M · 1.6 GB · ~632 tok/s · 32K12 GB tier →
16 GB · RTX 5060 Ti 16GBQ4_K_M · 1.6 GB · ~787 tok/s · 32K16 GB tier →
24 GB · RTX 4090referenceQ4_K_M · 1.6 GB · ~1771 tok/s · 32K24 GB tier →
Mac 32 GB · Mac Mini M4Q4_K_M · 1.6 GB · ~227 tok/s · 32KMacs →
Mac 64 GB · Mac Studio M4 MaxQ4_K_M · 1.6 GB · ~1033 tok/s · 32KMacs →

Alternatives to Bloom 560M

Similar models

4
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T5gemma B B Ul2 ITGoogle—2.5 GB~504same size
Falcon H1 0.5B BaseTII UAE—1.2 GB~950same size
Qwen3 0.6B BaseAlibaba—1.6 GB~840same size
Xglm 564MMeta—0.4 GB~1771same size
Fine-tunes & variants(1)

Specifications

Publisher
BigScience
Parameters
559M
Architecture
BloomForCausalLM
Vocabulary Size
250,880
Release Date
2022-05-19
License
bigscience-bloom-rail-1.0

Frequently Asked Questions

How much VRAM does Bloom 560M need?

Bloom 560M requires 0.4 GB of VRAM at Q4_K_M, or 1.2 GB at BF16.

VRAM = Weights + KV Cache + Overhead

Weights = 559M × 4.8 bits ÷ 8 = 0.3 GB

KV Cache + Overhead ≈ 0.1 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.

VRAM usage by quantization

0.4 GB

Learn more about VRAM estimation →

What's the best quantization for Bloom 560M?

For Bloom 560M, Q4_K_M (0.4 GB) offers the best balance of quality and VRAM usage. Q5_K_S (0.4 GB) provides better quality if you have the VRAM. The smallest option is IQ2_XXS at 0.2 GB.

VRAM requirement by quantization

IQ2_XXS
0.2 GB
IQ3_XS
0.3 GB
Q4_0
0.3 GB
IQ4_NL
0.3 GB
Q4_K_M ★
0.4 GB
BF16
1.2 GB

★ Recommended — best balance of quality and VRAM usage.

Learn more about quantization →

Can I run Bloom 560M on a Mac?

Yes — MacBook Air 13" M3 (8 GB) and 145 other Macs can run Bloom 560M. Apple Silicon uses unified memory, so the model shares RAM with the system. At Q4_K_M you need at least 0.4 GB of usable unified memory (RAM minus macOS overhead).

Can I run Bloom 560M locally?

Yes — Bloom 560M can run locally on consumer hardware. Popular tools include Ollama, LM Studio, and llama.cpp.

How fast is Bloom 560M?

At Q4_K_M, Bloom 560M can reach ~12973 tok/s on AMD Instinct MI350X. On NVIDIA GeForce RTX 4090: ~1771 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 ÷ 0.37 × 0.65 = ~14054 tok/s

Estimated speed at Q4_K_M (0.4 GB)

~14054 tok/s
~1771 tok/s
~14054 tok/s
~12973 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 Bloom 560M?

At Q4_K_M, the download is about 0.34 GB. The full-precision BF16 version is 1.12 GB. The smallest option (IQ2_XXS) is 0.15 GB.

Which GPUs can run Bloom 560M?

52 consumer GPUs can run Bloom 560M 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 Bloom 560M?

163 devices with unified memory can run Bloom 560M at Q4_K_M (0.4 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.