Compatibility check
Can you run DeepSeek R1 Distill Qwen 7B on the Radeon RX 7900 XT?
Yes. DeepSeek R1 Distill Qwen 7B fits on the Radeon RX 7900 XT (20 GB) in full FP16/BF16 precision, using about 17.7 GB including a 0.2 GB KV cache at 4,096 tokens. You have comfortable headroom for longer prompts and modest batching.
Memory breakdown
Weights plus a 0.2 GB KV cache at 4,096tokens, against the card's 20 GB. Verdicts leave ~10% headroom for activations and fragmentation.
| Precision | Weights | KV cache | Total | % of 20 GB | Fit |
|---|---|---|---|---|---|
| FP16 / BF16full quality | 17.5 GB | 0.2 GB | 17.7 GB | 89% | Fits |
| INT8 (8-bit)near-full quality | 8.8 GB | 0.2 GB | 9 GB | 45% | Fits |
| INT4 (4-bit)GPTQ / AWQ / GGUF Q4 | 4.4 GB | 0.2 GB | 4.6 GB | 23% | Fits |
Planning estimates, not a substitute for profiling. Real usage varies with the inference runtime, batch size, and how much context you actually use — the KV cache grows linearly with prompt length.
GPUs that run DeepSeek R1 Distill Qwen 7B
Cards where this model fits (at its best precision):
Models that fit the Radeon RX 7900 XT
Other popular models that run on this card:
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Frequently asked questions
Can the Radeon RX 7900 XT run DeepSeek R1 Distill Qwen 7B?
Yes. In FP16 it uses about 17.7 GB, which fits the Radeon RX 7900 XT's 20 GB.
How much VRAM does DeepSeek R1 Distill Qwen 7B need?
Approximately 17.5 GB in FP16, 8.8 GB in INT8, and 4.4 GB in 4-bit for the weights, plus a KV cache of about 0.2 GB at 4,096 tokens.
Does quantization let DeepSeek R1 Distill Qwen 7B fit on the Radeon RX 7900 XT?
Yes. Dropping to FP16 / BF16 brings total usage to about 17.7 GB, which fits the 20 GB card with headroom for the KV cache.
What happens to memory with longer context?
The KV cache grows linearly with prompt length. At 4,096 tokens it is about 0.2 GB here; doubling the context roughly doubles that term, so long-context use can push a tight fit over the edge.