AMD A4-9120C vs AMD Ryzen 9 3900X

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD A4-9120C or AMD A4-9120C – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The AMD A4-9120C features 2 processor cores and has the capability to manage 2 threads concurrently.
It was released in Q1/2019 and belongs to the 6 generation of the AMD A series.
To use the AMD A4-9120C, you'll need a motherboard with a FP4 socket.
The AMD Ryzen 9 3900X features 12 processor cores and has the capability to manage 24 threads concurrently.
It was released in Q3/2019 and belongs to the 3 generation of the AMD Ryzen 9 series.
To use the AMD Ryzen 9 3900X, you'll need a motherboard with a AM4 (PGA 1331) socket.
Mobile Segment Desktop / Server
AMD A4-9120C Name AMD Ryzen 9 3900X
AMD A Family AMD Ryzen 9
6 Generation 3
AMD A4-9000 Group AMD Ryzen 3000
 
 

CPU Cores and Base Frequency

The AMD A4-9120C has 2 CPU cores and can calculate 2 threads in parallel.
The clock frequency of the AMD A4-9120C is 1.6 GHz
and turbo frequency for one core is 2.4 GHz.
The AMD Ryzen 9 3900X has 12 CPU cores and can calculate 24 threads in parallel.
The clock frequency of the AMD Ryzen 9 3900X is 3.8 GHz
and turbo frequency for one core is 4.6 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
2.4 GHz Turbo Frequency (1 core) 4.6 GHz
No Overclocking Yes
normal Core architecture normal
1.6 GHz Frequency 3.8 GHz
2 Threads 24
2.0 GHz Turbo Frequency (all cores) None
No Hyperthreading Yes
2 CPU Cores 12
2x Cores 12x
 
 

Internal Graphics

The AMD A4-9120C has integrated graphics, called iGPU for short.
Specifically, the AMD A4-9120C uses the AMD Radeon R4 (Stoney Ridge), which has 192 texture shaders
and 3 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The AMD Ryzen 9 3900X does not have integrated graphics.
0.6 GHz GPU frequency --
Q2/2016 Release date --
12 Direct X --
AMD Radeon R4 (Stoney Ridge) GPU name
28 nm Technology --
-- Max. displays --
192 Shaders --
2.0 GB Max. GPU Memory 0 bytes
3 Execution units --
7 Generation --
-- GPU (Turbo) --
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode / Encode AVC --
Decode VC-1 --
Decode VP9 --
Decode h265 / HEVC (10 bit) --
Decode h264 --
Decode VP8 --
Decode h265 / HEVC (8 bit) --
Decode / Encode JPEG --
No AV1 --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 51.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
1 Memory channels 2
8.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC Yes
-- Bandwidth 51.2 GB/s
DDR4-1866 Memory type DDR4-3200
 
 

Thermal Management

The processor has a thermal design power (TDP) of 6 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 105 W watts.
90 °C Tjunction max 95 °C
None TDP (PL2) 142 W
6 W TDP (PL1 / PBP) 105 W
 
 

Technical details

The AMD A4-9120C is manufactured using a 28 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 2.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD Ryzen 9 3900X is manufactured using a 7 nm process.
In total, this processor boasts a generous 64.0 MB cache.
Q1/2019 Release date Q3/2019
-- Part Number --
0 bytes L2-Cache 6.0 MB
AMD-V Virtualization AMD-V, SVM
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
-- Chip design Chiplet
Stoney Ridge (Excavator) Architecture Matisse (Zen 2)
28 nm Technology 7 nm
FP4 Socket AM4 (PGA 1331)
Operating systems Windows 10, Linux, Windows 11
-- Release price 485 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
2.0 MB L3-Cache 64.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

AMD Ryzen 9 3900X
12C 24T @ 3.8 GHz
32755
32755
AMD A4-9120C
2C 2T @ 1.6 GHz
1545
1545

AMD A4-9120C and AMD Ryzen 9 3900X in leaderboards