Apple M1 Ultra (20C48G) vs Apple M3 Ultra (32C80G) Full Specs

Summary

20 Cores(16P+4E) 20 Threads(16P+4E) 3.23GHz	32 Cores(24P+8E) 32 Threads(24P+8E) 4.05GHz
TDP 220W	TDP 300W
Bandwidth 819.2GB/s LPDDR5	Bandwidth 819.2GB/s LPDDR5
iGPU 48-Core M1 Ultra	iGPU 80-Core M3 Ultra
Peak·FP32·FP16 15.93 TFLOPSFP16	Peak·FP32·FP16 28.26 TFLOPSFP16

Highlights

Geekbench 6 Single

Geekbench 6 Single Geekbench 6 Multi Max Bandwidth iGPU Peak iGPU FP32 iGPU FP16 NPU TOPS TDP

M1 Ultra (20C48G)2,400

x1

M3 Ultra (32C80G)3,221

x1.34

Show Top Score

Core Config

20 Cores 16P 4E	32 Cores 24P 8E
20 Threads 16P 4E	32 Threads 24P 8E

Clocks

Base Clock 3.23GHz	Base Clock 4.05GHz
Overclocking Locked	Overclocking Locked

Cache

L1i 192KB P 128KB E	L1i 192KB P 128KB E
L1d 128KB P 64KB E	L1d 128KB P 64KB E
L2 48MB P shared 4MB E shared	L2 64MB P shared 4MB E shared
SLC Cache 96MB	SLC Cache 96MB

Memory

Type LPDDR5	Type LPDDR5
Max Memory 128GB	Max Memory 128GB
ECC No	ECC No
Channels 8	Channels 8
Bus Width 1024-bit	Bus Width 1024-bit
Speed 6400MT/s	Speed 6400MT/s
Bandwidth 819.2GB/s	Bandwidth 819.2GB/s
Bandwidth Calculator Channels Transfer Rate6400MT/s Calculated Bandwidth 819.2GB/s	Bandwidth Calculator Channels Transfer Rate6400MT/s Calculated Bandwidth 819.2GB/s

Power & Thermals

TDP 220W	TDP 300W
Max Operating Temp 100°C Max	Max Operating Temp 100°C Max

Expansion

PCIe PCIe 4.0 x28 55.1GB/sBandwidth

PCIe PCIe 4.0 x32 63GB/sBandwidth

iGPU

iGPU 48-Core M1 Ultra	iGPU 80-Core M3 Ultra
Shaders 6144	Shaders 10240
Boost Clock 1.3GHz	Boost Clock 1.38GHz
Peak·FP32·FP16 15.93 TFLOPSFP16	Peak·FP32·FP16 28.26 TFLOPSFP16

NPU

NPU Model H13 Eos	NPU Model H15 Erebus
NPU Cores 32	NPU Cores 32
NPU Clock 1.5GHz	NPU Clock 2.36GHz
Performance 22 TOPSFP16	Performance 36 TOPSFP16

Chip

Manufacturer Apple	Manufacturer Apple
ISA AArch64	ISA AArch64
Architecture Apple Silicon 10ARMv8.5-A	Architecture Apple Silicon 13ARMv8.6-A
Family M Series	Family M Series
Branding	Branding
Codename Jade-2C M1 UltraVariant FirestormP-Core IcestormE-Core	Codename Palma-D M3 UltraVariant EverestP-Core Sawtooth E-Core
Market Segment Workstation	Market Segment Workstation
Release Date Mar 8, 2022	Release Date Mar 5, 2025

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node N5	Fabrication Node N3B
Die Size 865mm²	Die Size 954mm²
Transistor Count 114 Billion	Transistor Count 184 Billion
Transistor Density 132 MTr/mm²	Transistor Density 193 MTr/mm²

Images

No images available

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Used In

Desktops Mac Studio(M1 Ultra, Early 2022)

Desktops Mac Studio(M3 Ultra, Early 2025)

Competitors

AppleM1 Ultra (20C48G) vs CPU IntelXeon 654 AppleM1 Ultra (20C48G) vs CPU IntelXeon 656 AppleM1 Ultra (20C48G) vs CPU IntelXeon w5-2565X Show 12 more

AppleM3 Ultra (32C80G) vs CPU AppleM3 Ultra (28C60G) AppleM3 Ultra (32C80G) vs CPU IntelXeon 676X AppleM3 Ultra (32C80G) vs CPU IntelXeon w7-3555 Show 12 more