AMD Radeon RX 7900 XT 20GB: Specs & Local-AI Compatibility
20GB RDNA3 card — value memory if ROCm fits your workflow.
Specs
- Memory
- 20 GB
- Memory type
- GDDR6
- Bandwidth
- 800 GB/s
- Approx FP16
- 103 TFLOPS
- Architecture
- RDNA 3
- Process
- TSMC 5nm
- Power
- 315 W
- Launch
- 2022
Models this chip can run
Open models graded for a single AMD Radeon RX 7900 XT 20GB, best fit first.
- Mistral Small 24BMistral · ~24B · 32K ctx · Apache-2.0
Fits at Q4_K_M (~14GB) with ~3.6GB headroom — about 1 concurrent instance.
Q4_K_M · ~14GBRuns well - DeepSeek-Coder V2 (class)DeepSeek · ~16B · 128K ctx · DeepSeek License
Fits at Q4_K_M (~11GB) with ~6.6GB headroom — about 1 concurrent instance.
Q4_K_M · ~11GBRuns well - StarCoder2 15BStarCoder · ~15B · 16K ctx · BigCode OpenRAIL-M
Fits at Q8_0 (~17GB) with ~0.6GB headroom — about 1 concurrent instance.
Q8_0 · ~17GBRuns well - Qwen2.5 14BQwen · ~14B · 128K ctx · Apache-2.0
Fits at Q8_0 (~16GB) with ~1.6GB headroom — about 1 concurrent instance.
Q8_0 · ~16GBRuns well - Qwen3 14BQwen · ~14B · 128K ctx · Apache-2.0
Fits at Q8_0 (~16GB) with ~1.6GB headroom — about 1 concurrent instance.
Q8_0 · ~16GBRuns well - Phi-3 Medium (14B)Phi · ~14B · 128K ctx · MIT
Fits at Q8_0 (~15GB) with ~2.6GB headroom — about 1 concurrent instance.
Q8_0 · ~15GBRuns well - Phi-4 (14B)Phi · ~14B · 16K ctx · MIT
Fits at Q8_0 (~15GB) with ~2.6GB headroom — about 1 concurrent instance.
Q8_0 · ~15GBRuns well - DeepSeek-R1 Distill 14BDeepSeek · ~14B · 128K ctx · MIT
Fits at Q8_0 (~16GB) with ~1.6GB headroom — about 1 concurrent instance.
Q8_0 · ~16GBRuns well
Build a private AI Business OS on AMD Radeon RX 7900 XT 20GB
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