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AMD Radeon RX 6900 XT

AMD · 16GB GDDR6 · Can run 49 models

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Manufacturer AMD
VRAM 16 GB
Memory Type GDDR6
Architecture RDNA 2
Stream Procs 5,120
Bandwidth 512 GB/s
TDP 300W
MSRP $999
Released Dec 8, 2020

AI Notes

The RX 6900 XT is AMD's top RDNA 2 card with 16GB VRAM and 512 GB/s bandwidth. It matches the RX 6800 XT in memory capacity with higher compute performance. Can run 13B models comfortably and attempt larger models with quantization. Good value on the used market with mature ROCm support.

Compatible Models

Model Parameters Best Quant VRAM Used Fit Est. Speed
Qwen 3 0.6B 600M Q4_K_M 2.5 GB Runs ~205 tok/s
Gemma 3 1B 1B Q8_0 2 GB Runs ~256 tok/s
Llama 3.2 1B 1B Q8_0 3 GB Runs ~171 tok/s
DeepSeek R1 1.5B 1.5B Q8_0 3 GB Runs ~171 tok/s
Gemma 2 2B 2B Q8_0 4 GB Runs ~128 tok/s
Gemma 3n E2B 2B Q4_K_M 3.3 GB Runs ~155 tok/s
Llama 3.2 3B 3B Q8_0 5 GB Runs ~102 tok/s
Phi-3 Mini 3.8B 3.8B Q8_0 5.8 GB Runs ~88 tok/s
Phi-4 Mini 3.8B 3.8B Q4_K_M 4.5 GB Runs ~114 tok/s
Gemma 3 4B 4B Q4_K_M 5 GB Runs ~102 tok/s
Gemma 3n E4B 4B Q4_K_M 4.5 GB Runs ~114 tok/s
Qwen 3 4B 4B Q4_K_M 4.5 GB Runs ~114 tok/s
DeepSeek R1 7B 7B Q8_0 9 GB Runs ~57 tok/s
Falcon 3 7B 7B Q4_K_M 6.8 GB Runs ~75 tok/s
Mistral 7B 7B Q8_0 9 GB Runs ~57 tok/s
Qwen 2.5 7B 7B Q8_0 9 GB Runs ~57 tok/s
Qwen 2.5 Coder 7B 7B Q8_0 9 GB Runs ~57 tok/s
Qwen 2.5 VL 7B 7B Q4_K_M 7 GB Runs ~73 tok/s
Cogito 8B 8B Q4_K_M 7.5 GB Runs ~68 tok/s
DeepSeek R1 8B 8B Q4_K_M 7.5 GB Runs ~68 tok/s
Llama 3.1 8B 8B Q8_0 10 GB Runs ~51 tok/s
Nemotron 3 Nano 8B 8B Q4_K_M 7.5 GB Runs ~68 tok/s
Qwen 3 8B 8B Q4_K_M 7.5 GB Runs ~68 tok/s
Gemma 2 9B 9B Q8_0 11 GB Runs ~47 tok/s
Falcon 3 10B 10B Q4_K_M 8.5 GB Runs ~60 tok/s
Llama 3.2 Vision 11B 11B Q4_K_M 8.5 GB Runs ~60 tok/s
Gemma 3 12B 12B Q4_K_M 10.5 GB Runs ~49 tok/s
Mistral Nemo 12B 12B Q4_K_M 9.5 GB Runs ~54 tok/s
DeepSeek R1 14B 14B Q4_K_M 9.9 GB Runs ~52 tok/s
Phi-4 14B 14B Q4_K_M 9.9 GB Runs ~52 tok/s
Phi-4 Reasoning 14B 14B Q4_K_M 11 GB Runs ~47 tok/s
Qwen 2.5 14B 14B Q4_K_M 9.9 GB Runs ~52 tok/s
Qwen 2.5 Coder 14B 14B Q4_K_M 12 GB Runs ~43 tok/s
Qwen 3 14B 14B Q4_K_M 12 GB Runs ~43 tok/s
Codestral 22B 22B Q4_K_M 14.7 GB Runs (tight) ~35 tok/s
StarCoder2 15B 15B Q8_0 17 GB CPU Offload ~9 tok/s
Devstral 24B 24B Q4_K_M 17 GB CPU Offload ~9 tok/s
Magistral Small 24B 24B Q4_K_M 17 GB CPU Offload ~9 tok/s
Mistral Small 3.1 24B 24B Q4_K_M 18 GB CPU Offload ~8 tok/s
Gemma 2 27B 27B Q4_K_M 17.7 GB CPU Offload ~9 tok/s
Gemma 3 27B 27B Q4_K_M 20 GB CPU Offload ~8 tok/s
Qwen 3 30B-A3B (MoE) 30B Q4_K_M 22 GB CPU Offload ~7 tok/s
Cogito 32B 32B Q4_K_M 21.5 GB CPU Offload ~7 tok/s
DeepSeek R1 32B 32B Q4_K_M 20.7 GB CPU Offload ~8 tok/s
Qwen 2.5 32B 32B Q4_K_M 20.7 GB CPU Offload ~8 tok/s
Qwen 2.5 Coder 32B 32B Q4_K_M 23 GB CPU Offload ~7 tok/s
Qwen 3 32B 32B Q4_K_M 23 GB CPU Offload ~7 tok/s
QwQ 32B 32B Q4_K_M 21.5 GB CPU Offload ~7 tok/s
Command R 35B 35B Q4_K_M 22.5 GB CPU Offload ~7 tok/s
20 model(s) are too large for this hardware.