AMD Ryzen 9 3950X vs Intel Xeon 638
CPU · Specs Compare
General Parameters
Release Date
Nov 2019
Feb 2026
Manufacturer
AMD
Intel
Type
Desktop
Server
Instruction Set
x86-64
—
Core Architecture
Zen 2
Granite Rapids
Integrated Graphics
N/A
N/A
Generation
—
Xeon 600 (Granite Rapids-WS)
Package
Transistor Count
3.8 billions
—
Manufacturing Process
7 nm
5 nm
Socket
AM4
Intel Socket 4710
Power Consumption
105 W
180 W
Peak Operating Temperature
—
100°C
Foundry
—
Intel
Die Size
—
598 mm²
I/O Process Size
—
10 nm
I/O Die Size
—
2x 241
Package
—
FC-LGA18N
CPU Performance
Performance Cores
16
—
Performance Core Threads
32
—
Performance Core Base Frequency
3.5 GHz
3.2 GHz
Performance Core Turbo Frequency
4.7 GHz
4.8 GHz
Total Core Count
16
16
Total Thread Count
32
32
Bus Frequency
100 MHz
100 MHz
Multiplier
35x
32.0
L1 Cache
64 K per core
112 KB per core
L2 Cache
512 K per core
2 MB per core
L3 Cache
64 MB shared
72 MB shared
Unlocked Multiplier
Yes
Yes
SMP
—
1
Memory Parameters
Memory Types
DDR4-3200
DDR5-6400
Max Memory Size
128 GB
—
Max Memory Channels
2
4
Max Memory Bandwidth
47.68 GB/s
—
ECC Memory Support
Yes
Yes
Miscellaneous
PCIe Version
4.0
5
PCIe Lanes
16
80
Benchmark
Cinebench R23
1,349
—
Cinebench R23
24,396
—
Geekbench 6
1,709
—
Geekbench 6
11,656
—
Cinebench 2024
72
—
Cinebench 2024
1,325
—
Passmark CPU
2,692
—
Passmark CPU
38,953
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.