DeepSeek on AMD RDNA3

Can I run DeepSeek-R1-Distill-Llama 8B on an Radeon RX 7900 XTX?

Yes. DeepSeek-R1-Distill-Llama 8B at Q4_K_M uses 6.4 GB of the 21.8 GB available on a Radeon RX 7900 XTX, and runs at about 105 tokens per second. You can push the context to 128K.

Runs comfortably

6.4 GB of 21.8 GB · 30%
022 GB
Weights 4.6 GB
KV cache 1.0 GB
Runtime overhead 0.8 GB

DeepSeek-R1-Distill-Llama 8B at Q4_K_M leaves 15.3 GB spare on a Radeon RX 7900 XTX. There is room to raise the context length or move up a quantisation level.

Generation105tok/s
Prompt processing3217tok/s
Max context128Ktokens
KV per 1K tokens0GB

Every quantisation of DeepSeek-R1-Distill-Llama 8B on a Radeon RX 7900 XTX

Highlighted row is the highest quality that still fits at 8K context.

QuantisationbpwWeights TotalVerdictMax ctxtok/s
FP16 / BF16 16.00 15.0 GB 16.8 GB Runs comfortably 48K 35.1
INT8 / W8A8 8.50 7.7 GB 9.5 GB Runs comfortably 106K 65.7
Q8_0 (GGUF) 8.50 7.7 GB 9.5 GB Runs comfortably 106K 65.7
FP8 (E4M3) 8.00 7.5 GB 9.3 GB Runs comfortably 108K 67.6
Q6_K 6.56 6.1 GB 8.0 GB Runs comfortably 118K 81.1
AWQ 4-bit 4.25 5.4 GB 7.2 GB Runs comfortably 124K 90.8
GPTQ 4-bit 4.25 5.4 GB 7.2 GB Runs comfortably 124K 90.8
MXFP4 4.25 5.4 GB 7.2 GB Runs comfortably 124K 90.8
Q5_K_M 5.67 5.3 GB 7.1 GB Runs comfortably 125K 92.5
Q5_K_S 5.52 5.2 GB 7.0 GB Runs comfortably 126K 94.8
Q4_K_M 4.85 4.6 GB 6.4 GB Runs comfortably 128K 105
Q4_K_S 4.58 4.4 GB 6.2 GB Runs comfortably 128K 109
Q4_0 4.55 4.4 GB 6.2 GB Runs comfortably 128K 110
IQ4_XS 4.25 4.1 GB 5.9 GB Runs comfortably 128K 115
Q3_K_M 3.91 3.8 GB 5.7 GB Runs comfortably 128K 123
IQ3_M 3.70 3.7 GB 5.5 GB Runs comfortably 128K 128
IQ3_XXS 3.06 3.2 GB 5.0 GB Runs comfortably 128K 145
Q2_K 2.63 2.8 GB 4.6 GB Runs comfortably 128K 160
IQ2_XXS 2.06 2.3 GB 4.2 GB Runs comfortably 128K 185
IQ1_M 1.75 2.1 GB 3.9 GB Runs comfortably 128K 202

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