AMD Athlon II X4 651K vs AMD A8-3870K

Last updated:

CPU comparison with benchmarks

-VS-

CPU lineage

AMD Athlon II X4 651K or AMD Athlon II X4 651K – 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 Athlon II X4 651K features 4 processor cores and has the capability to manage 4 threads concurrently.
It was released in Q4/2011 and belongs to the 2 generation of the AMD Athlon II series.
To use the AMD Athlon II X4 651K, you'll need a motherboard with a FM1 socket.
The AMD A8-3870K features 4 processor cores and has the capability to manage 4 threads concurrently.
It was released in Q4/2011 and belongs to the 1 generation of the AMD A series.
To use the AMD A8-3870K, you'll need a motherboard with a FM1 socket.
AMD Athlon II X4 651K Name AMD A8-3870K
Desktop / Server Segment Desktop / Server
AMD Athlon II Family AMD A
AMD Athlon II X4 (Llano) Group AMD A8-3000
2 Generation 1
 
 

CPU Cores and Base Frequency

The AMD Athlon II X4 651K has 4 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the AMD Athlon II X4 651K is 3.0 GHz
The AMD A8-3870K has 4 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the AMD A8-3870K is 3.1 GHz
3.0 GHz Frequency 3.1 GHz
4x Cores 4x
4 Threads 4
No Hyperthreading No
Yes Overclocking Yes
normal Core architecture normal
4 CPU Cores 4
 
 

Internal Graphics

The AMD Athlon II X4 651K does not have integrated graphics.
The AMD A8-3870K has integrated graphics, called iGPU for short.
Specifically, the AMD A8-3870K uses the AMD Radeon HD 6550D, which has 400 texture shaders
and 5 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- Technology 32 nm
-- Shaders 400
-- GPU (Turbo) --
-- GPU frequency 0.6 GHz
-- Execution units 5
0 bytes Max. GPU Memory 1.0 GB
-- Max. displays --
-- Release date Q2/2011
-- Direct X 11
GPU name AMD Radeon HD 6550D
-- Generation 3
 
 

Artificial Intelligence and Machine Learning

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

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

Memory & PCIe

The processor supports a maximum memory capacity of 16.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 21.3 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
16.0 GB Max. Memory 0 bytes
2 Memory channels 2
No ECC No
No AES-NI No
pci PCIe pci
21.3 GB/s Bandwidth --
DDR3-1333 Memory type DDR3-1600
 
 

Thermal Management

The processor has a thermal design power (TDP) of 100 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.
-- Tjunction max --
100 W TDP (PL1 / PBP) 100 W
 
 

Technical details

The AMD Athlon II X4 651K is manufactured using a 32 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD A8-3870K is manufactured using a 32 nm process.
In total, this processor boasts a generous 4.0 MB cache.
32 nm Technology 32 nm
-- Chip design --
FM1 Socket FM1
0 bytes L3-Cache 4.0 MB
AMD-V Virtualization AMD-V
SSE3, SSE4a, MMX, 3DNow! ISA extensions SSE3, SSE4a
Windows 10, Linux Operating systems Windows 10, Linux
-- Release price 80 $
4.0 MB L2-Cache 0 bytes
Q4/2011 Release date Q4/2011
-- Part Number --
Llano Architecture Llano (K10)
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
Technical data sheet Documents Technical data sheet