Apple M5 Ultra: 512 GB, what it runs and what it costs
Specs checked · Aliteq Team · How we compute this
The short answer
The Apple M5 Ultra has 512 GB of VRAM and 1200 GB/s of memory bandwidth (2026). At Q4_K_M quality or better with an 8K context it runs 57 of the open models we track; the largest that fits with room to spare is MiniMax-M3.1-Flash (MoE). We don't see it for rent on the providers we track right now.
- VRAM
- 512 GB
- Bandwidth
- 1200 GB/s
- Board power
- —
- Launched
- 2026
Source: Apple specification · bandwidth not yet confirmed by a second source, so we don't estimate speed from it
Buy it or rent it
Not for rent on the providers we track right now. See every card that is.
Which AI models run on the Apple M5 Ultra
Computed by our VRAM engine for an 8K context: the best quality each model fits at in 512 GB. Speeds are upper-bound estimates from memory bandwidth, not benchmarks.
| Model | Best fit | VRAM used | ~tok/s |
|---|---|---|---|
| DeepSeek V4.1 Flash (MoE) | FP4 + FP8 | 476 GB93% · tight | — |
| GLM-5.3 (MoE) | Q5_K_M | 500 GB98% · tight | — |
| MiniMax-M3.1-Flash (MoE) | NVFP4 | 235 GB46% | — |
| MiniMax-M3 (MoE) | Q8_0 | 424 GB83% | — |
| Qwen3 235B-A22B (MoE) | F16 | 440 GB86% | — |
| MiniMax-M2.5 (MoE) | FP8 | 217 GB42% | — |
| Qwen3.8-Flash-Next (MoE) | F16 | 336 GB66% | — |
| Qwen3.5 122B-A10B (MoE) | F16 | 234 GB46% | — |
| NVIDIA Nemotron 3.5 Super VL 120B-A12B (MoE) | F16 | 233 GB45% | — |
| NVIDIA Nemotron 3 Super 120B-A12B (MoE) | F16 | 231 GB45% | — |
| Mistral Small 4 119B (MoE) | FP8 | 114 GB22% | — |
| gpt-oss 120B (MoE) | MXFP4 | 62 GB12% | — |
Too big for 512 GB (rent a bigger card instead): what it costs to run DeepSeek V4 Pro (MoE), what it costs to run Kimi K3 (MoE).
Check a model and context of your own in the VRAM calculator.
Our guides on the Apple M5 Ultra
Cards to compare it with
- Apple M3 Ultra · 512 GB
- Apple M2 Ultra · 192 GB
- Apple M5 Max (18-core CPU / 40-core GPU) · 128 GB
- Apple M4 Max (16-core CPU / 40-core GPU) · 128 GB
- DGX Spark (GB10 Grace Blackwell) · 128 GB
- AMD Ryzen AI Max+ 395 (Strix Halo,) · 128 GB
Every card by VRAM tier: all GPUs for gaming and local AI.