Intel Xeon 638 vs Intel Core Ultra 7 255U
CPU · Specs Compare
General Parameters
Release Date
Feb 2026
Jan 2025
Manufacturer
Intel
Intel
Type
Server
Laptop
Core Architecture
Granite Rapids
Arrow Lake
Integrated Graphics
N/A
Arc Graphics (4-Cores)
Generation
Xeon 600 (Granite Rapids-WS)
—
Instruction Set
—
x86-64
Processor Number
—
255U
Package
Manufacturing Process
5 nm
3 nm
Socket
Intel Socket 4710
FCBGA-2049
Power Consumption
180 W
12-15 W
Peak Operating Temperature
100°C
110 °C
Foundry
Intel
—
Die Size
598 mm²
—
I/O Process Size
10 nm
—
I/O Die Size
2x 241
—
Package
FC-LGA18N
—
Max Turbo Power Consumption
—
57 W
CPU Performance
Performance Core Base Frequency
3.2 GHz
2.0 GHz
Performance Core Turbo Frequency
4.8 GHz
5.2 GHz
Total Core Count
16
12
Total Thread Count
32
14
Bus Frequency
100 MHz
100 MHz
Multiplier
32.0
20
L1 Cache
112 KB per core
112 K per core
L2 Cache
2 MB per core
2 MB per core
L3 Cache
72 MB shared
12 MB shared
Unlocked Multiplier
Yes
No
SMP
1
—
Performance Cores
—
2
Performance Core Threads
—
4
Efficiency Cores
—
10
Efficiency Core Threads
—
10
Efficiency Core Base Frequency
—
1.7 GHz
Efficiency Core Turbo Frequency
—
4.2 GHz
Memory Parameters
Memory Types
DDR5-6400
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Max Memory Channels
4
2
ECC Memory Support
Yes
No
Max Memory Size
—
128 GB
Miscellaneous
PCIe Version
5
4.0
PCIe Lanes
80
20
Graphics Card Parameters
Integrated Graphics
—
true
GPU Max Dynamic Frequency
—
2100 MHz
Benchmark
Cinebench R23
—
1,803
Cinebench R23
—
11,888
Geekbench 6
—
2,582
Geekbench 6
—
10,941
Cinebench 2024
—
101
Cinebench 2024
—
588
▲ Specs Compare
Data sourced from official specifications and benchmark tests.