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Can the AMD Radeon RX 7900 XT run Gemma 3 4B?

Radeon RX 7900 XT × Gemma 3 4B8K context
YesRuns fully on the GPU
Memory at FP169.5 GB of 20 GB
Weights 8.6 GBKV cache 0.3 GBRuntime 0.6 GB
QuantFP16Full quality
Speed~56tokens per second
Max context128Kthe model's full window
  1. FP16
  2. Q8_0
  3. Q6_K
  4. Q5_K_M
  5. Q4_K_M
  6. Q3_K_M
  7. Q2_K

Yes. The AMD Radeon RX 7900 XT can run Gemma 3 4B fully in VRAM at FP16 (full quality), using about 9.5 GB of the 20 GB available, at roughly 56 tokens/second.

Try other context lengths

Run it with Ollama

With Ollama installed, one command downloads and starts Gemma 3 4B:

ollama run gemma3:4b

Ollama's default download is Q4_K_M (about 3.5 GB here). You have room for FP16, which is full quality: pick that GGUF in LM Studio or from Hugging Face.

New to this? Step-by-step setup for the Radeon RX 7900 XT

Run it in the cloud

No AMD Radeon RX 7900 XT? Run Gemma 3 4B in the cloud.

Rent a cloud GPU by the hour. No upfront cost, stop any time.

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Memory needed by quantization

At 8,192 tokens of context. The black line marks the 20 GB the AMD Radeon RX 7900 XT can use.

QuantQualityMemoryFits?Speed
FP16Full quality9.5 GBFits~56 tok/s
Q8_0Near-lossless5.5 GBFits~105 tok/s
Q6_KExcellent4.4 GBFits~136 tok/s
Q5_K_MVery good3.9 GBFits~157 tok/s
Q4_K_MGood, most popular3.5 GBFits~184 tok/s
Q3_K_MNoticeably degraded3 GBFits~228 tok/s
Q2_KHeavily degraded2.5 GBFits~298 tok/s

Measured speed from real Radeon RX 7900 XT owners

Tokens per second that people measured on their own AMD Radeon RX 7900 XT, next to our estimate.

No one has measured Gemma 3 4B on the AMD Radeon RX 7900 XT yet. The speeds above are estimates. Run the benchmark and yours becomes the first real number on this page.

Have a Radeon RX 7900 XT? Add your real speed

One command times Gemma 3 4B in your own Ollama, shows you exactly what it would send, and asks before sending anything. No sign-up, no personal data.

macOS and Linux

curl -fsSL https://gpufit.dev/bench.sh | sh -s -- gemma3:4b

Windows (PowerShell)

$env:GPUFIT_MODEL="gemma3:4b"; irm https://gpufit.dev/bench.ps1 | iex

How the benchmark works

GPUs that run Gemma 3 4B comfortably

Models that run well on the AMD Radeon RX 7900 XT

Frequently asked questions

Can AMD Radeon RX 7900 XT run Gemma 3 4B?

Yes. The AMD Radeon RX 7900 XT can run Gemma 3 4B fully in VRAM at FP16 (full quality), using about 9.5 GB of the 20 GB available, at roughly 56 tokens/second.

How much VRAM does Gemma 3 4B need?

About 3.5 GB at Q4_K_M with 8,192 tokens of context, and about 9.5 GB at full FP16 precision.

How fast is Gemma 3 4B on the AMD Radeon RX 7900 XT?

Roughly 56 tokens per second at FP16, estimated from the AMD Radeon RX 7900 XT's 800 GB/s memory bandwidth.