Can I Run Devstral on AMD Radeon RX 7900 XT?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 11 września 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 ~3.4 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~31 tok/s (est.), with room for up to 16K context.
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AMD Radeon RX 7900 XT Specs
| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
Devstral Small 2505 24B on the AMD Radeon RX 7900 XT: VRAM by quantization
| Quant | VRAM needed | Fits 20 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.1 GB | ✗ No | — | — |
| Q8_0 | 27.6 GB | ✗ No | — | — |
| Q6_K | 21.8 GB | ✗ No | — | — |
| Q5_K_M | 19.2 GB | ✓ Yes | 8K | — |
| Q4_K_M | 16.6 GB | ✓ Yes | 16K | — |
| Q3_K_M | 12.4 GB | ✓ Yes | 32K | — |
| 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 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 16.6 GB · 32K 20.7 GB ✗ · 128K 36.8 GB ✗. Past 32K 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? 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 XT (at 8K context)
| Devstral Small 2505 24B | Q4_K_M · 16.6 GB at 8K context · ~31 tok/s (est.) |
| Devstral Small 2 24B | Q4_K_M · 16.6 GB at 8K context · ~31 tok/s (est.) |
At 2 hrs/day, buying (~$899) beats renting at $0.34/hr after about 3.7 years.
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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
Will Devstral run on the AMD Radeon RX 7900 XT?
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 ~3.4 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~31 tok/s (est.), with room for up to 16K context.
Which Devstral variant fits best on the AMD Radeon RX 7900 XT?
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 ~31 tokens/sec, up to 16K context.
Every Devstral size on the AMD Radeon RX 7900 XT
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Devstral-2 123B | 77.9 GB | Does not fit | — |
| Devstral Small 2505 24B | 16.6 GB | Runs | ~31 tok/s |
| Devstral Small 2 24B | 16.6 GB | Runs | ~31 tok/s |
Devstral on Other GPUs
- Devstral on NVIDIA GeForce RTX 5080
- Devstral on NVIDIA GeForce RTX 5070 Ti
- Devstral on NVIDIA GeForce RTX 5060 Ti 16GB
- Devstral on NVIDIA GeForce RTX 4090
- Devstral on NVIDIA GeForce RTX 4080 Super
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VRAM Tier
Troubleshooting
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