Can I Run Devstral on AMD Radeon RX 7900 XTX?
Written by Jakub Rusinowski · Last updated September 11, 2026
Yes, comfortably — Devstral Small 2505 24B at Q4_K_M needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), leaving ~7.4 GB of the AMD Radeon RX 7900 XTX's 24 GB, at ~36 tok/s (est.), with room for up to 32K context.
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AMD Radeon RX 7900 XTX Specs
| VRAM | 24 GB |
| Memory Bandwidth | 960 GB/s |
Devstral Small 2505 24B on the AMD Radeon RX 7900 XTX: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.1 GB | ✗ No | — | — |
| Q8_0 | 27.6 GB | ✗ No | — | — |
| Q6_K | 21.8 GB | ✓ Yes | 16K | — |
| Q5_K_M | 19.2 GB | ✓ Yes | 32K | — |
| Q4_K_M | 16.6 GB | ✓ Yes | 32K | — |
| Q3_K_M | 12.4 GB | ✓ Yes | 64K | — |
| Q2_K | 10 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 24 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 XTX: 8K 16.6 GB · 32K 20.7 GB · 128K 36.8 GB ✗. Past 128K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Devstral Small 2505 24B on 16 GB of system RAM, CPU only: runs, but it is tight.
Devstral Sizes That Fit the AMD Radeon RX 7900 XTX (at 8K context)
| Devstral Small 2505 24B | Q4_K_M · 16.6 GB at 8K context · ~36 tok/s (est.) |
| Devstral Small 2 24B | Q4_K_M · 16.6 GB at 8K context · ~36 tok/s (est.) |
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FAQ
Is the AMD Radeon RX 7900 XTX enough to run Devstral locally?
Yes, comfortably — Devstral Small 2505 24B at Q4_K_M needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), leaving ~7.4 GB of the AMD Radeon RX 7900 XTX's 24 GB, at ~36 tok/s (est.), with room for up to 32K context.
What's the best Devstral size for the AMD Radeon RX 7900 XTX?
Devstral Small 2505 24B at Q4_K_M quantization needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), estimated ~36 tokens/sec, up to 32K context.
Every Devstral size on the AMD Radeon RX 7900 XTX
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Devstral-2 123B | 77.9 GB | Does not fit | — |
| Devstral Small 2505 24B | 16.6 GB | Runs | ~36 tok/s |
| Devstral Small 2 24B | 16.6 GB | Runs | ~36 tok/s |
Devstral on Other GPUs
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