AMD Ryzen 9 3900
VS
AMD Ryzen 9 7900
AMD Ryzen 9 3900
VS
AMD Ryzen 9 7900

Which to select

What to choose and what is the difference between AMD Ryzen 9 3900 and AMD Ryzen 9 7900? Which processor is more powerful and faster to accomplish your task? The processor with the best specifications and a winner in benchmarks is your choice!

CPU generation and family

Processor nomenclature, family, group and segment.

Name
AMD Ryzen 9 7900
Segment
Desktop / Server
CPU group
AMD Ryzen 7000
Family
AMD Ryzen 9
Generation
6
Predecessor
AMD Ryzen 9 5900
Successor
--

CPU Cores and Base Frequency

What to choose AMD Ryzen 9 3900 or AMD Ryzen 9 7900? The greater the value of the characteristic (highlighted in green), the better.

3.10 GHz
Frequency
3.70 GHz
12
CPU Cores
no data
4.30 GHz
Turbo (1 Core)
no data
24
CPU Threads
no data
Yes
Hyperthreading
no data
Yes
Overclocking
Yes
No turbo
Turbo (12 Cores)
no data
Core architecture
normal
no data
CPU Cores / Threads
12 / 24
no data
Hyperthreading / SMT
Yes
no data
Cores
12x Zen 4
no data
Turbo Frequency (1 Core)
5.40 GHz
no data
Turbo Frequency (12 Cores)
4.70 GHz

Internal Graphics

The graphics chip allows the processor to perform complex calculation and display tasks. The more memory and the higher the clock frequency, the better. Determine the winner, who has the better chip? AMD Ryzen 9 3900 or AMD Ryzen 9 7900. 

GPU name
AMD Radeon Graphics (Raphael)
GPU frequency
0.40 GHz
No turbo
GPU (Turbo)
2.20 GHz
Generation
9
Execution units
2
Shader
128
--
Max. Memory
no data
Max. displays
3
Technology
5 nm
Release date
Q3/2022
Max. GPU Memory
8 GB
no data
Direct X
12

Hardware codec support

Technical information that will be of interest to specialists and does not affect the performance of the processor. It can be skipped in the comparison.

No
h264
Decode / Encode
No
JPEG
Decode / Encode
No
h265 8bit
no data
No
h265 10bit
no data
No
VP8
Decode / Encode
No
VP9
Decode / Encode
No
VC-1
Decode
No
AVC
Decode / Encode
h265 / HEVC (8 bit)
Decode / Encode
h265 / HEVC (10 bit)
Decode / Encode
AV1
No

Memory & PCIe

The interfaces and standards of RAM that the processor supports. The more modern the standard and the larger the memory capacity, the better.

DDR4-3200
Memory type
DDR5-5200
128 GB
Max. Memory
128 GB
2
Memory channels
2 (Dual Channel)
No
ECC
Yes
4.0
PCIe version
no data
20
PCIe lanes
no data
no data
Bandwidth
83.2 GB/s
no data
PCIe
5.0 x 24
no data
AES-NI
Yes

Memory & PCIe

Encryption

Data encryption standards supported by CPUs

Yes
AES-NI
no data

Thermal Management

TDP is the maximum amount of heat generated by the processor. It is used when selecting a cooling system. The higher the TDP, the more heat the cooling system will have to dissipate.

65 W
TDP
no data
95 °C
Tjunction max.
95 °C
--
TDP up
170 W
--
TDP down
--
TDP (PL2)
88 W
no data
TDP (PL1 / PBP)
65 W

Technical details

These are key parameters that will help you determine which CPU is better. Pay special attention to the release date, technological aspects of the manufacturing process (measured in nanometers), and the third-level cache (L3).

64.00 MB
L3-Cache
64.00 MB
7 nm
Technology
5 nm
Zen 2
Architecture
Raphael (Zen 4)
AMD-V, AMD-Vi, SEV
Virtualization
AMD-V, SVM
AM4
Socket
AM5 (LGA 1718)
Q3/2019
Release date
Q1/2023
ca. 485 $
Market price
no data
Instruction set (ISA)
x86-64 (64 bit)
L2-Cache
12.00 MB
Part Number
--
ISA extensions
SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
no data
Chip design
Chiplet
no data
Operating systems
Windows 10, Windows 11, Linux
no data
Release price
--
no data
Documents
Technical data sheet

Devices using this processor

Devices that can use this type of processor, desktop or laptop.

Unknown
Used in
no data

User rating

0.0 Out of 0 CpusData Score AMD Ryzen 9 3900
0.0 Out of 0 CpusData Score AMD Ryzen 9 7900