Can I Run Codestral on AMD Radeon RX 7900 XT?
作者： Jakub Rusinowski · 最后更新： 2026年7月12日
Yes, comfortably — Codestral 22B at Q4_K_M needs 16.1 GB at 8K context (13.4 GB weights + 2.7 GB KV cache/overhead), leaving ~3.9 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~32 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 |
Codestral 22B on the AMD Radeon RX 7900 XT: VRAM by quantization
| Quant | VRAM needed | Fits 20 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 47.1 GB | ✗ No | — | — |
| Q8_0 | 26.3 GB | ✗ No | — | — |
| Q6_K | 20.9 GB | ✗ No | — | — |
| Q5_K_M | 18.4 GB | ✓ Yes | 8K | — |
| Q4_K_M | 16.1 GB | ✓ Yes | 16K | — |
| Q3_K_M | 12.1 GB | ✓ Yes | 32K | — |
| Q2_K | 10 GB | ✓ Yes | 32K | — |
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 16.1 GB · 32K 21.7 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? Codestral 22B on 16 GB of system RAM, CPU only: runs, but it is tight.
Codestral Sizes That Fit the AMD Radeon RX 7900 XT (at 8K context)
| Codestral 22B | Q4_K_M · 16.1 GB at 8K context · ~32 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
Is the AMD Radeon RX 7900 XT enough to run Codestral locally?
Yes, comfortably — Codestral 22B at Q4_K_M needs 16.1 GB at 8K context (13.4 GB weights + 2.7 GB KV cache/overhead), leaving ~3.9 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~32 tok/s (est.), with room for up to 16K context.
What's the best Codestral size for the AMD Radeon RX 7900 XT?
Codestral 22B at Q4_K_M quantization needs 16.1 GB at 8K context (13.4 GB weights + 2.7 GB KV cache/overhead), estimated ~32 tokens/sec, up to 16K context.
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