Intel Xeon 638 vs Intel Xeon 6377P
CPU Specs Compare
General Parameters
Release Date
Feb 2026
May 2026
Manufacturer
Intel
Intel
Type
Server
Server
Core Architecture
Granite Rapids
Raptor Lake-R
Integrated Graphics
N/A
N/A
Generation
Xeon 600 (Granite Rapids-WS)
Xeon 6 (Raptor Lake Refresh)
Package
Manufacturing Process
5 nm
10 nm
Socket
Intel Socket 4710
Intel Socket 1700
Power Consumption
180 W
95 W
Peak Operating Temperature
100°C
100°C
Foundry
Intel
Intel
Die Size
598 mm²
257 mm²
I/O Process Size
10 nm
-
I/O Die Size
2x 241
-
Package
FC-LGA18N
FC-LGA16A
CPU Performance
Performance Core Base Frequency
3.2 GHz
3.1 GHz
Performance Core Turbo Frequency
4.8 GHz
5.7 GHz
Total Core Count
16
12
Total Thread Count
32
24
Bus Frequency
100 MHz
100 MHz
Multiplier
32.0
31.0
L1 Cache
112 KB per core
80 KB per core
L2 Cache
2 MB per core
2 MB per core
L3 Cache
72 MB shared
36 MB shared
Unlocked Multiplier
Yes
No
SMP
1
1
Memory Parameters
Memory Types
DDR5-6400
DDR5-4800
Max Memory Channels
4
2
ECC Memory Support
Yes
Yes
Max Memory Bandwidth
-
76.8 GB/s
Miscellaneous
PCIe Version
5
5
PCIe Lanes
80
16