Apple M4 Ultra (Mac Studio, 2025)
apple Apple M4 Ultra (UltraFusion, 2x M4 Max) 2025
Fields
id
accelerators/apple-m4-ultraVendor
apple
Architecture
Apple M4 Ultra (UltraFusion, 2x M4 Max)
Release year
2025
Process (nm)
3
Form factors
mac-studio
VRAM (GB)
192
Memory type
LPDDR5X unified
Memory bus (bit)
1,024
Memory bandwidth (GB/s)
819
Bandwidth basis
Apple M4 Ultra spec: 819 GB/s unified memory
Unified memory
yes
Consumer part
yes
notes
Largest M4-generation Apple Silicon part; two M4 Max dies fused. Up to 192 GB unified memory (some SKUs 256 GB). Aggregate siliconscore benchmarks file it as 'M4 Ultra (192 GB)'. Decode scales roughly with 819 GB/s.
Notes
Largest M4-generation Apple Silicon part; two M4 Max dies fused. Up to 192 GB unified memory (some SKUs 256 GB). Aggregate siliconscore benchmarks file it as 'M4 Ultra (192 GB)'. Decode scales roughly with 819 GB/s.
Cross-references
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