AMD Ryzen 9 3900XT vs AMD EPYC 8635P
CPU · Specs Compare
General Parameters
Release Date
Jul 2020
May 2026
Manufacturer
AMD
AMD
Type
Desktop
Server
Instruction Set
x86-64
—
Core Architecture
Zen 2 (Matisse)
Sorano
Integrated Graphics
No
N/A
Generation
—
EPYC (Zen 5 (Sorano))
Package
Transistor Count
3.8 billions
99.78 billions
Manufacturing Process
7 nm
4 nm
Socket
AM4
AMD Socket SP6
Power Consumption
105 W
225 W
Peak Operating Temperature
95°C
—
Foundry
—
TSMC
Die Size
—
12x70.6 mm²
I/O Process Size
—
6 nm
Package
—
FC-LGA4844
CPU Performance
Performance Cores
12
—
Performance Core Threads
24
—
Performance Core Base Frequency
3.8 GHz
1.6 GHz
Performance Core Turbo Frequency
4.7 GHz
4.5 GHz
Total Core Count
12
84
Total Thread Count
24
168
Bus Frequency
100 MHz
100 MHz
Multiplier
38x
16.0
L1 Cache
64 K per core
80 KB per core
L2 Cache
512 K per core
1 MB per core
L3 Cache
64 MB shared
384 MB
Unlocked Multiplier
Yes
No
SMP
—
1
Memory Parameters
Memory Types
DDR4-3200
DDR5-6400
Max Memory Size
128 GB
—
Max Memory Channels
2
6
Max Memory Bandwidth
47.68 GB/s
307.2 GB/s
ECC Memory Support
Yes
Yes
Miscellaneous
PCIe Version
4.0
5
PCIe Lanes
24
96
Benchmark
Cinebench R23
1,350
—
Cinebench R23
18,437
—
Geekbench 6
1,763
—
Geekbench 5
1,311
—
Geekbench 6
11,025
—
Geekbench 5
12,279
—
Blender
261
—
Passmark CPU
2,769
—
Passmark CPU
32,856
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.