Written by Jakub Rusinowski · Last updated August 15, 2026
No — IBM Granite 4.0 doesn't fit the Intel Arc B580's 12 GB; you're short by ~0.2 GB even at Q2_K. The cheapest card that runs it is the NVIDIA GeForce RTX 4090 (24 GB).
| VRAM | 12 GB |
| Memory Bandwidth | 456 GB/s |
| Quant | VRAM needed | Fits 12 GB? | Max context |
|---|---|---|---|
| F16 | 65.7 GB | ✗ No | — |
| Q8_0 | 35.7 GB | ✗ No | — |
| Q6_K | 28 GB | ✗ No | — |
| Q5_K_M | 24.4 GB | ✗ No | — |
| Q4_K_M | 21 GB | ✗ No | — |
| Q3_K_M | 15.4 GB | ✗ No | — |
| Q2_K | 12.2 GB | ✗ No | — |
VRAM needed assumes a 4K-token context with an f16 KV cache; “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.
Every IBM Granite 4.0 variant requires more VRAM than the Intel Arc B580 provides (12 GB).
NVIDIA GeForce RTX 4090 (24 GB VRAM).
IBM Granite 4.0 needs ~19 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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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
No — IBM Granite 4.0 doesn't fit the Intel Arc B580's 12 GB; you're short by ~0.2 GB even at Q2_K. The cheapest card that runs it is the NVIDIA GeForce RTX 4090 (24 GB).
The NVIDIA GeForce RTX 4090 (24 GB VRAM) is the cheapest upgrade that fits it.
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