Apple M5 Ultra
- Boost/Base Clock:
- 4.6 GHz / 3.0 GHz
- Core/Thread Count:
- 32 Core / 32 Thread (24 Performance + 8 Efficiency)
- Cache:
- 80MB L2 + 8MB L1
- TDP:
- 100 Watts
- CPU Process Node:
- 3 Nanometers (Enhanced)
- CPU Series:
- Apple Silicon
- Form Factor:
- Desktop
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Manufacturer: Apple Last updated:
Apple M5 Ultra Review
The Apple M5 Ultra is a 32-core System-on-Chip (24 performance cores plus 8 efficiency cores) built on an enhanced next-generation 3nm process within a 100 Watt TDP, found exclusively in the top-spec Mac Studio.
The M5 Ultra fuses two complete M5 Max dies via UltraFusion, doubling the M5 Max's CPU cores, GPU cores, and memory bandwidth. The result, covered on the GPU side elsewhere in this catalog, is an 80-core GPU with up to 512GB of unified memory and up to 1.2TB/s of bandwidth — figures with no real PC integrated-graphics equivalent, positioning the M5 Ultra as Apple's flagship desktop chip for the most demanding local AI, video, and 3D work.
UltraFusion at the M5 Max's Scale
Joining two 16-core M5 Max dies produces a 32-core CPU, continuing Apple's die-fusion approach and matching the pattern set by the M1 Ultra and M2 Ultra before it.
A Genuinely Different Memory Class
At up to 512GB of unified memory and 1.2TB/s of bandwidth, the M5 Ultra's memory system rivals genuine multi-GPU professional workstation setups rather than anything typically called integrated graphics.
Benchmarks
Geekbench 6 multi-core scores around 34,000 make the M5 Ultra Apple's fastest CPU to date, genuinely competitive with high-end workstation CPUs on the most heavily threaded professional workloads.
Specifications
Identity
| Brand | Apple |
|---|---|
| Product Line | Apple Silicon |
| Model Number | M5 Ultra |
Segment and platform
| Microarchitecture | Apple Silicon, Fifth Generation |
|---|---|
| Process Node | 3 nm |
| Form Factor | Desktop |
|---|---|
| Core/Thread Count | 32 Core / 32 Thread (24 Performance + 8 Efficiency) |
| TDP | 100 W |
| Cache | 80MB L2 + 8MB L1 |
| Boost/Base Clock | 4.6 GHz / 3.0 GHz |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Mac Studio buyers running the most demanding local AI, video, or 3D professional workloads that can use 32 CPU cores and up to 512GB of unified memory.
Not for
- Anyone needing a portable chip — this is desktop-only silicon.
- Typical everyday or light creative use, where the cost premium is entirely unjustified.
FAQs
What are the key specifications of the Apple M5 Ultra?
The Apple M5 Ultra is a processor from Apple. Key specs: Boost/Base Clock 4.6 GHz / 3.0 GHz, Core/Thread Count 32 Core / 32 Thread (24 Performance + 8 Efficiency), Cache 80MB L2 + 8MB L1, TDP 100 Watts, CPU Process Node 3 Nanometers (Enhanced).
Who is the Apple M5 Ultra best suited to?
It suits mac studio buyers running the most demanding local ai, video, or 3d professional workloads that can use 32 cpu cores and up to 512gb of unified memory..
What are the drawbacks of the Apple M5 Ultra?
It is a poor fit for anyone needing a portable chip — this is desktop-only silicon., typical everyday or light creative use, where the cost premium is entirely unjustified..