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Can the AMD Radeon RX 7900 XTX run Gemma 3 12B?

Radeon RX 7900 XTX × Gemma 3 12B8K context
YesRuns fully on the GPU
Memory at Q8_014.4 GB of 24 GB
Weights 13 GBKV cache 0.9 GBRuntime 0.6 GB
QuantQ8_0Near-lossless
Speed~44tokens 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 XTX can run Gemma 3 12B fully in VRAM at Q8_0 (near-lossless), using about 14.4 GB of the 24 GB available, at roughly 44 tokens/second.

Try other context lengths

Run it with Ollama

With Ollama installed, one command downloads and starts Gemma 3 12B:

ollama run gemma3:12b

Ollama's default download is Q4_K_M (about 8.9 GB here). You have room for Q8_0, which is near-lossless: pick that GGUF in LM Studio or from Hugging Face.

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

Run it in the cloud

No AMD Radeon RX 7900 XTX? Run Gemma 3 12B in the cloud.

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

Rent a GPU on RunPodRent a GPU on Vast.ai

Memory needed by quantization

At 8,192 tokens of context. The black line marks the 24 GB the AMD Radeon RX 7900 XTX can use.

QuantQualityMemoryFits?Speed
FP16Full quality25.9 GBToo big—
Q8_0Near-lossless14.4 GBFits~44 tok/s
Q6_KExcellent11.5 GBFits~58 tok/s
Q5_K_MVery good10.1 GBFits~66 tok/s
Q4_K_MGood, most popular8.9 GBFits~78 tok/s
Q3_K_MNoticeably degraded7.4 GBFits~97 tok/s
Q2_KHeavily degraded6 GBFits~126 tok/s

Measured speed from real Radeon RX 7900 XTX owners

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

No one has measured Gemma 3 12B on the AMD Radeon RX 7900 XTX yet. The speeds above are estimates. Run the benchmark and yours becomes the first real number on this page.

Have a Radeon RX 7900 XTX? Add your real speed

One command times Gemma 3 12B 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 -- gemma3:12b

Windows (PowerShell)

$env:GPUFIT_MODEL="gemma3:12b"; irm https://gpufit.dev/bench.ps1 | iex

How the benchmark works

GPUs that run Gemma 3 12B comfortably

Models that run well on the AMD Radeon RX 7900 XTX

Frequently asked questions

Can AMD Radeon RX 7900 XTX run Gemma 3 12B?

Yes. The AMD Radeon RX 7900 XTX can run Gemma 3 12B fully in VRAM at Q8_0 (near-lossless), using about 14.4 GB of the 24 GB available, at roughly 44 tokens/second.

How much VRAM does Gemma 3 12B need?

About 8.9 GB at Q4_K_M with 8,192 tokens of context, and about 25.9 GB at full FP16 precision.

How fast is Gemma 3 12B on the AMD Radeon RX 7900 XTX?

Roughly 44 tokens per second at Q8_0, estimated from the AMD Radeon RX 7900 XTX's 960 GB/s memory bandwidth.