Can I Run Magistral Small on NVIDIA GeForce RTX 5070?
Written by Jakub Rusinowski · Last updated September 6, 2026
No — Magistral Small 24B at Q4_K_M needs 17 GB at 8K context (14.5 GB weights + 2.5 GB KV cache/overhead), and the NVIDIA GeForce RTX 5070's 12 GB leaves it ~5 GB short. The cheapest card that runs it is the AMD Radeon RX 7900 XT (20 GB).
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NVIDIA GeForce RTX 5070 Specs
| VRAM | 12 GB |
| Memory Bandwidth | 672 GB/s |
Magistral Small 24B on the NVIDIA GeForce RTX 5070: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.5 GB | ✗ No | — | — |
| Q8_0 | 28 GB | ✗ No | — | — |
| Q6_K | 22.2 GB | ✗ No | — | — |
| Q5_K_M | 19.5 GB | ✗ No | — | — |
| Q4_K_M | 17 GB | ✗ No | — | — |
| Q3_K_M | 12.7 GB | ✗ No | — | — |
| Q2_K | 10.4 GB | ✓ Yes | 8K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 12 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 NVIDIA GeForce RTX 5070: 8K 17 GB ✗ · 32K 22 GB ✗ · 128K 42.1 GB ✗. Past 8K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Magistral Small 24B on 16 GB of system RAM, CPU only: runs, but it is tight.
Why It Does Not Fit
Every Magistral Small variant requires more VRAM than the NVIDIA GeForce RTX 5070 provides (12 GB).
Nearest GPU That Fits
AMD Radeon RX 7900 XT (20 GB VRAM).
Magistral Small needs ~17 GB but this GPU has 12 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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FAQ
Will Magistral Small run on the NVIDIA GeForce RTX 5070?
No — Magistral Small 24B at Q4_K_M needs 17 GB at 8K context (14.5 GB weights + 2.5 GB KV cache/overhead), and the NVIDIA GeForce RTX 5070's 12 GB leaves it ~5 GB short. The cheapest card that runs it is the AMD Radeon RX 7900 XT (20 GB).
What GPU should I get instead to run Magistral Small?
The AMD Radeon RX 7900 XT (20 GB VRAM) is the cheapest upgrade that fits it.
Magistral Small on Other GPUs
- Magistral Small on NVIDIA GeForce RTX 4070 Ti
- Magistral Small on NVIDIA GeForce RTX 4070 Super
- Magistral Small on NVIDIA GeForce RTX 4070
- Magistral Small on NVIDIA GeForce RTX 3060 (12GB)
- Magistral Small on Intel Arc B580
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VRAM Tier
Troubleshooting
- CUDA out of memory — why it happens and how to fix it
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
← Can I Run It? | Magistral Small Model Page | NVIDIA GeForce RTX 5070 GPU Page | VRAM calculator | Check Your Hardware