CPUs

Intel Xeon w7-3555 vs Apple M3 Ultra (32C80G) Full Specs

28 Cores
56 Threads
2.7GHz
32 Cores(24P+8E)
32 Threads(24P+8E)
4.05GHz
TDP
325W
TDP
300W
Bandwidth
307.2GB/s
DDR5
Bandwidth
819.2GB/s
LPDDR5
iGPU
0
iGPU
··
-
··
28.26 TFLOPSFP16
Socket
Socket
-

Xeon w7-3555Xeon w7-35552,300
x1
M3 Ultra (32C80G)M3 Ultra (32C80G)3,221
x1.40

28 Cores
28P
-
32 Cores
24P
8E
56 Threads
56P
-
32 Threads
24P
8E

Base Clock
2.7GHz
Base Clock
4.05GHz
Boost Clock
4.8GHz
Boost Clock
-
Overclocking
Locked
Overclocking
Locked

L1i
32KB P
-
L1i
192KB P
128KB E
L1d
48KB P
-
L1d
128KB P
64KB E
L2
2MB P
-
-
L2
64MB P shared
4MB E shared
L3
75MB
L3
-
SLC Cache
-
SLC Cache
96MB

Type
DDR5
Type
LPDDR5
Max Memory
4.1TB
Max Memory
128GB
ECC
Yes
ECC
No
Channels
8
Channels
8
Bus Width
512-bit
Bus Width
1024-bit
Speed
4800MT/s
Speed
6400MT/s
Bandwidth
307.2GB/s
Bandwidth
819.2GB/s
Bandwidth Calculator
Channels
Transfer Rate
Calculated Bandwidth
307.2GB/s
Bandwidth Calculator
Channels
Transfer Rate
Calculated Bandwidth
819.2GB/s

TDP
325W
TDP
300W
Peak Power
390W
Peak Power
-
Max Operating Temp
102°C Max
Max Operating Temp
100°C Max
T-Case
78°C Max
T-Case
-
Included Cooler
0
Included Cooler
-

Bus Type
DMI
Bus Type
-
Bus Config
8 lanes
Bus Config
-
Bus Speed
8GT/s
Bus Speed
-
Bus Bandwidth
8GB/s
Bus Bandwidth
-

PCIe
PCIe 5.0 x112
441.1GB/sBandwidth
PCIe
PCIe 4.0 x32
63GB/sBandwidth

iGPU
0
iGPU
Shaders
-
Shaders
10240
Boost Clock
-
Boost Clock
1.38GHz
··
-
··
28.26 TFLOPSFP16

NPU Model
DL Boost
NPU Model
H15 Erebus
NPU Cores
-
NPU Cores
32
NPU Clock
-
NPU Clock
2.36GHz
Performance
-
Performance
36 TOPSFP16

Manufacturer
Manufacturer
ISA
x86-64
ISA
AArch64
Architecture
Architecture
Family
Family
Branding
Xeon w7 2023 branding
Branding
M3 Ultra  branding
Codename
Sapphire Rapids-HBM
Sapphire Rapids-XCCVariant
Golden CoveP-Core
-
Codename
Palma-D
M3 UltraVariant
EverestP-Core
Sawtooth E-Core
Market Segment
Workstation
Market Segment
Workstation
Release Date
Jul 1, 2024
Release Date
Mar 5, 2025

Foundry
Intel
Foundry
TSMC
Fabrication Node
Intel 7
Fabrication Node
N3B
Die Size
1576mm²
Die Size
954mm²
Transistor Count
112 Billion
Transistor Count
184 Billion
Transistor Density
71 MTr/mm²
Transistor Density
193 MTr/mm²

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