Written by Jakub Rusinowski · Last updated August 15, 2026
No — IBM Granite 4.0 doesn't fit the Apple M1's 16 GB. The cheapest card that runs it is the NVIDIA GeForce RTX 4090 (24 GB).
| VRAM | 16 GB unified memory |
| Memory Bandwidth | 68 GB/s |
| Quant | VRAM needed | Fits 16 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 | ✓ Yes | 4K |
| Q2_K | 12.2 GB | ✓ Yes | 16K |
VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 16 GB of unified memory. 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 Apple M1 provides (16 GB).
NVIDIA GeForce RTX 4090 (24 GB VRAM).
IBM Granite 4.0 needs ~19 GB but this GPU has 16 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 Apple M1's 16 GB. 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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