Gemma 4 VRAM Calculator: Which Model Fits Your Hardware?

If you are searching for a Gemma 4 VRAM calculator, what you really need is a fast way to answer two questions:

1. Which Gemma 4 model can my hardware actually run?
2. Which one should I run, even if several technically fit?

This page works as a practical Gemma 4 VRAM calculator and model chooser using public April 2026 numbers from LM Studio, ggml-org GGUF pages, Google's official model card, and Unsloth's local-run guide.

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Gemma 4 VRAM calculator: the fast answer

Start here:

Available memory	Best first Gemma 4 target
4-5 GB	E2B Q4
6-8 GB	E4B Q4
9-12 GB	E4B Q8 or E2B F16
16-18 GB	26B A4B Q4
19-24 GB	31B Q4 or 26B A4B Q4 with more headroom
28-32 GB	26B A4B Q8
34-48 GB	31B Q8
50-62 GB	26B A4B F16 or 31B F16

This is the fastest useful output of a Gemma 4 VRAM calculator.

But memory alone is not enough. You also need to know what kind of workload you care about.

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Step 1: use exact public memory figures

These are the clearest public numbers available on April 7, 2026:

Model	Q4 / 4-bit	Q8 / 8-bit	F16 / BF16
E2B	3.11-4 GB	4.97-5.05 GB	9.31-10 GB
E4B	5.34-6 GB	8.03-12 GB	15.1-16 GB
26B A4B	16.8-18 GB	26.9-30 GB	50.5-52 GB
31B	18.7-20 GB	32.6-38 GB	61.4-62 GB

These ranges combine:

• official ggml-org GGUF sizes
• LM Studio minimum system memory
• Unsloth practical planning ranges

That makes them much more useful than a single raw file-size number.

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Step 2: choose by workload, not just fit

Here is the better model chooser:

If you want the smallest possible Gemma 4

Choose E2B.

Best for:

• very weak hardware
• edge deployments
• smallest download and runtime footprint

If you want the best small model

Choose E4B.

Best for:

• laptops
• small local workstations
• people who want audio support and stronger quality

If you want the local sweet spot

Choose 26B A4B.

Best for:

• 24 GB class GPUs
• local APIs
• coding assistants
• people who care about speed and quality together

If you want the strongest Gemma 4 model

Choose 31B.

Best for:

• bigger memory budgets
• quality-first local inference
• users who do not mind a heavier model

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Step 3: use the right rule when several models fit

This is the part people often miss.

If several models fit your hardware:

• choose the smallest one that clearly solves your problem if responsiveness matters
• choose the largest one only if the quality gain is worth the memory and speed cost

That leads to a practical rule:

• if both E2B and E4B fit, choose E4B
• if both 26B A4B and 31B Q4 fit on 24 GB class hardware, choose 26B A4B unless you know you want 31B specifically
• if 31B Q8 only barely fits on paper, treat it as too tight

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Gemma 4 VRAM calculator by common hardware

Hardware	Best first pick
8 GB laptop / unified memory	E2B Q4 or E4B Q4
16 GB laptop / mini PC	E4B Q8 or 26B A4B if the system is otherwise strong
24 GB GPU	26B A4B Q4
32 GB GPU	26B A4B Q8 or 31B Q4
48 GB GPU	31B Q8
64 GB unified / workstation memory	31B Q8 and some F16 workflows

This is why a good Gemma 4 VRAM calculator is not just a table of file sizes. It is a model-chooser page.

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Audio, context, and model-family rules

A few quick rules save a lot of bad choices:

• need audio: choose E2B or E4B
• need 256K context: choose 26B A4B or 31B
• need the best small model: choose E4B
• need the best local speed-quality tradeoff: choose 26B A4B
• need the strongest Gemma 4: choose 31B

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FAQ

What is the best Gemma 4 VRAM calculator answer for 24 GB GPUs?

Usually 26B A4B Q4.

What is the best small Gemma 4 model?

Usually E4B, unless memory is so tight that you must drop to E2B.

Can I run 31B on 24 GB?

Yes, in Q4, but 26B A4B is often the better practical pick.

Can I run 31B Q8 on 32 GB?

Treat that as too tight. The official ggml-org Q8 size is already 32.6 GB before you think about headroom.

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Official references

• Google Gemma 4 model card
• LM Studio Gemma 4 model family
• ggml-org Gemma 4 26B A4B GGUF
• ggml-org Gemma 4 31B GGUF
• ggml-org Gemma 4 E4B GGUF
• ggml-org Gemma 4 E2B GGUF
• Unsloth Gemma 4 local guide
• Unsloth Gemma 4 E2B GGUF

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Related guides

• Gemma 4 hardware requirements
• Gemma 4 E2B vs E4B
• Gemma 4 26B vs 31B
• Does LM Studio support Gemma 4?