AMD EPYC 7643 vs AMD A4-3400

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD EPYC 7643 or AMD EPYC 7643 – 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 EPYC 7643 features 48 processor cores and has the capability to manage 96 threads concurrently.
It was released in Q1/2021 and belongs to the 3 generation of the AMD EPYC series.
To use the AMD EPYC 7643, you'll need a motherboard with a SP3 socket.
The AMD A4-3400 features 2 processor cores and has the capability to manage 2 threads concurrently.
It was released in Q3/2011 and belongs to the 1 generation of the AMD A series.
To use the AMD A4-3400, you'll need a motherboard with a FM1 socket.
Desktop / Server Segment Desktop / Server
AMD EPYC 7643 Name AMD A4-3400
AMD EPYC Family AMD A
3 Generation 1
AMD EPYC 7003 Group AMD A4-3000
 
 

CPU Cores and Base Frequency

The AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel.
The clock frequency of the AMD EPYC 7643 is 2.3 GHz
and turbo frequency for one core is 3.6 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The AMD A4-3400 has 2 CPU cores and can calculate 2 threads in parallel.
The clock frequency of the AMD A4-3400 is 2.7 GHz
3.6 GHz Turbo Frequency (1 core) None
No Overclocking Yes
normal Core architecture normal
2.3 GHz Frequency 2.7 GHz
96 Threads 2
Yes Hyperthreading No
48 CPU Cores 2
48x Zen 3 Cores 2x
 
 

Internal Graphics

The AMD EPYC 7643 does not have integrated graphics.
The AMD A4-3400 has integrated graphics, called iGPU for short.
Specifically, the AMD A4-3400 uses the AMD Radeon HD 6410D, which has 160 texture shaders
and 2 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- GPU frequency 0.6 GHz
-- Release date Q4/2010
-- Direct X 11
GPU name AMD Radeon HD 6410D
-- Technology 32 nm
-- Max. displays --
-- Shaders 160
0 bytes Max. GPU Memory 1.0 GB
-- Execution units 2
-- Generation 3
-- 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.
-- AVC Decode
-- VC-1 Decode
-- VP9 No
-- h265 / HEVC (10 bit) No
-- h264 Decode
-- VP8 No
-- h265 / HEVC (8 bit) No
-- JPEG Decode / Encode
-- AV1 No
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 4.0 TB distributed across 8 memory channels. It offers a peak memory bandwidth of 204.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
8 Memory channels 2
4.0 TB Max. Memory 0 bytes
pci PCIe pci
Yes AES-NI No
Yes ECC No
204.8 GB/s Bandwidth --
DDR4-3200 Memory type DDR3-1600
 
 

Thermal Management

The processor has a thermal design power (TDP) of 240 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 65 W watts.
-- Tjunction max --
240 W TDP (PL1 / PBP) 65 W
225 W TDP down None
 
 

Technical details

The AMD EPYC 7643 is manufactured using a 7 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 256.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD A4-3400 is manufactured using a 32 nm process.
In total, this processor boasts a generous 1.0 MB cache.
Q1/2021 Release date Q3/2011
-- Part Number --
0 bytes L2-Cache 0 bytes
AMD-V, SVM Virtualization AMD-V
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2 ISA extensions SSE3, SSE4a
Chiplet Chip design --
Milan (Zen 3) Architecture Llano (K10)
7 nm Technology 32 nm
SP3 Socket FM1
Windows 10, Linux Operating systems Windows 10, Linux
4995 $ Release price 28 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
256.0 MB L3-Cache 1.0 MB