Can I Run DeepSeek-R1-Distill-Qwen-14B on AMD Radeon RX 7900 XT?
作者： Jakub Rusinowski · 最后更新： 2026年7月12日
Yes, comfortably — DeepSeek R1 Distill Qwen 14B at Q4_K_M needs 10.6 GB at 8K context (8.5 GB weights + 2.1 GB KV cache/overhead), leaving ~9.4 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~48 tok/s (est.), with room for up to 64K context.
These figures are for DeepSeek-R1-Distill-Qwen-14B, a distill of Qwen2.5-14B — not the full DeepSeek R1. The full DeepSeek R1 (671B) needs about 405 GB of weights at Q4_K_M and is a different model.
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AMD Radeon RX 7900 XT Specs
| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
DeepSeek R1 Distill Qwen 14B on the AMD Radeon RX 7900 XT: VRAM by quantization
| Quant | VRAM needed | Fits 20 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 30.1 GB | ✗ No | — | — |
| Q8_0 | 17 GB | ✓ Yes | 16K | Build for this |
| Q6_K | 13.6 GB | ✓ Yes | 32K | — |
| Q5_K_M | 12.1 GB | ✓ Yes | 32K | Build for this |
| Q4_K_M | 10.6 GB | ✓ Yes | 64K | Build for this |
| Q3_K_M | 8.1 GB | ✓ Yes | 64K | — |
| Q2_K | 6.7 GB | ✓ Yes | 64K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 20 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the AMD Radeon RX 7900 XT: 8K 10.6 GB · 32K 14.6 GB · 128K 30.7 GB ✗. Past 128K it no longer fits 20 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? DeepSeek R1 Distill Qwen 14B on 16 GB of system RAM, CPU only: runs, but it is tight.
DeepSeek R1 Sizes That Fit the AMD Radeon RX 7900 XT (at 8K context)
| DeepSeek R1 Distill Qwen 14B | Q4_K_M · 10.6 GB at 8K context · ~48 tok/s (est.) |
| DeepSeek R1 Distill Llama 8B | Q4_K_M · 6.7 GB at 8K context · ~72 tok/s (est.) |
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Does the AMD Radeon RX 7900 XT have enough VRAM for DeepSeek R1?
Yes, comfortably — DeepSeek R1 Distill Qwen 14B at Q4_K_M needs 10.6 GB at 8K context (8.5 GB weights + 2.1 GB KV cache/overhead), leaving ~9.4 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~48 tok/s (est.), with room for up to 64K context.
Which quantization of DeepSeek R1 should I use on the AMD Radeon RX 7900 XT?
DeepSeek R1 Distill Qwen 14B at Q4_K_M quantization needs 10.6 GB at 8K context (8.5 GB weights + 2.1 GB KV cache/overhead), estimated ~48 tokens/sec, up to 64K context.
Every DeepSeek R1 size on the AMD Radeon RX 7900 XT
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| DeepSeek R1 (671B) | 406.5 GB | Does not fit | — |
| DeepSeek R1 Distill Qwen 32B | 22.3 GB | Runs at Q3_K_M | — |
| DeepSeek R1 Distill Llama 8B | 6.7 GB | Runs | ~72 tok/s |
DeepSeek R1 on Other GPUs
- DeepSeek R1 on NVIDIA GeForce RTX 5080
- DeepSeek R1 on NVIDIA GeForce RTX 5070 Ti
- DeepSeek R1 on NVIDIA GeForce RTX 5060 Ti 16GB
- DeepSeek R1 on NVIDIA GeForce RTX 4090
- DeepSeek R1 on NVIDIA GeForce RTX 4080 Super
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