Intel Xeon 638 vs Intel Xeon 676X
CPU · Specs Compare
General Parameters
Release Date
Feb 2026
Feb 2026
Manufacturer
Intel
Intel
Type
Server
Server
Core Architecture
Granite Rapids
Granite Rapids
Integrated Graphics
N/A
N/A
Generation
Xeon 600 (Granite Rapids-WS)
Xeon 600 (Granite Rapids-WS)
Series
—
Intel Xeon 6 processors
Package
Manufacturing Process
5 nm
5 nm
Socket
Intel Socket 4710
Intel Socket 4710
Power Consumption
180 W
275 W
Peak Operating Temperature
100°C
99°C
Foundry
Intel
Intel
Die Size
598 mm²
2x598 mm²
I/O Process Size
10 nm
10 nm
I/O Die Size
2x 241
2x 241
Package
FC-LGA18N
FC-LGA18N
CPU Performance
Performance Core Base Frequency
3.2 GHz
2.8 GHz
Performance Core Turbo Frequency
4.8 GHz
4.9 GHz
Total Core Count
16
32
Total Thread Count
32
64
Bus Frequency
100 MHz
100 MHz
Multiplier
32.0
28.0
L1 Cache
112 KB per core
112 KB per core
L2 Cache
2 MB per core
2 MB per core
L3 Cache
72 MB shared
144 MB shared
Unlocked Multiplier
Yes
Yes
SMP
1
1
Performance Cores
—
32
Performance Core Threads
—
64
Memory Parameters
Memory Types
DDR5-6400
DDR5-6400
Max Memory Channels
4
8
ECC Memory Support
Yes
Yes
Max Memory Size
—
4 TB
Max Memory Bandwidth
—
409.6 GB/s
Miscellaneous
PCIe Version
5
5
PCIe Lanes
80
128
▲ Specs Compare
Data sourced from official specifications and benchmark tests.