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Can the AMD Radeon RX 7800 XT run Gemma 3 4B?

Radeon RX 7800 XT × Gemma 3 4B8K context
YesRuns fully on the GPU
Memory at FP1610.3 GB of 16 GB
Weights 8.6 GBKV cache 1.1 GBRuntime 0.6 GB
QuantFP16Full quality
Memory10.3 GBof 16 GB usable
Speed~44tokens per second
  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 7800 XT can run Gemma 3 4B fully in VRAM at FP16 (full quality), using about 10.3 GB of the 16 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 4B:

ollama run gemma3:4b

Ollama's default download is Q4_K_M (about 4.3 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 7800 XT

Run it in the cloud

No AMD Radeon RX 7800 XT? Run Gemma 3 4B 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 16 GB the AMD Radeon RX 7800 XT can use.

QuantQualityMemoryFits?Speed
FP16Full quality10.3 GBFits~44 tok/s
Q8_0Near-lossless6.3 GBFits~82 tok/s
Q6_KExcellent5.3 GBFits~106 tok/s
Q5_K_MVery good4.8 GBFits~122 tok/s
Q4_K_MGood, most popular4.3 GBFits~144 tok/s
Q3_K_MNoticeably degraded3.8 GBFits~178 tok/s
Q2_KHeavily degraded3.4 GBFits~232 tok/s

GPUs that run Gemma 3 4B comfortably

Models that run well on the AMD Radeon RX 7800 XT

Frequently asked questions

Can AMD Radeon RX 7800 XT run Gemma 3 4B?

Yes. The AMD Radeon RX 7800 XT can run Gemma 3 4B fully in VRAM at FP16 (full quality), using about 10.3 GB of the 16 GB available, at roughly 44 tokens/second.

How much VRAM does Gemma 3 4B need?

About 4.3 GB at Q4_K_M with 8,192 tokens of context, and about 10.3 GB at full FP16 precision.

How fast is Gemma 3 4B on the AMD Radeon RX 7800 XT?

Roughly 44 tokens per second at FP16, estimated from the AMD Radeon RX 7800 XT's 624 GB/s memory bandwidth.