AMD Athlon II X4 651 vs Intel Core i7-8665U

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD Athlon II X4 651 or AMD Athlon II X4 651 – 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 651 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 651, you'll need a motherboard with a FM1 socket.
The Intel Core i7-8665U features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2019 and belongs to the 8 generation of the Intel Core i7 series.
To use the Intel Core i7-8665U, you'll need a motherboard with a BGA 1356 socket.
AMD Athlon II Family Intel Core i7
Desktop / Server Segment Mobile
AMD Athlon II X4 (Llano) Group Intel Core i 8000U
2 Generation 8
AMD Athlon II X4 651 Name Intel Core i7-8665U
 
 

CPU Cores and Base Frequency

The AMD Athlon II X4 651 has 4 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the AMD Athlon II X4 651 is 3.0 GHz
The Intel Core i7-8665U has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i7-8665U is 1.9 GHz
and turbo frequency for one core is 4.8 GHz.
None None 2.8 GHz
4 Threads 8
4x Cores 4x
3.0 GHz Frequency 1.9 GHz
No Overclocking No
normal Core architecture normal
No Hyperthreading Yes
4 CPU Cores 4
None None 4.8 GHz
 
 

Internal Graphics

The AMD Athlon II X4 651 does not have integrated graphics.
The Intel Core i7-8665U has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-8665U uses the Intel UHD Graphics 620, which has 192 texture shaders
and 24 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- Execution units 24
-- Technology 14 nm
-- Direct X 12
-- Release date Q3/2016
-- Shaders 192
-- GPU frequency 0.3 GHz
-- Max. displays --
GPU name Intel UHD Graphics 620
-- Generation 9.5
-- GPU (Turbo) 1.15 GHz
0 bytes Max. GPU Memory 16.0 GB
 
 

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 / Encode
-- h265 / HEVC (8 bit) Decode / Encode
-- h265 / HEVC (10 bit) Decode / Encode
-- VP9 Decode / Encode
-- AV1 No
-- JPEG Decode / Encode
-- h264 Decode / Encode
-- VP8 Decode / Encode
-- VC-1 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.
The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 38.4 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
No ECC No
pci PCIe pci
2 Memory channels 2
21.3 GB/s Bandwidth 38.4 GB/s
DDR3-1333 Memory type DDR4-2400
No AES-NI Yes
16.0 GB Max. Memory 64.0 GB
 
 

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.
The processor has a thermal design power (TDP) of 15 W watts.
None TDP up 25 W
100 W TDP (PL1 / PBP) 15 W
None TDP down 10 W
-- Tjunction max 100 °C
 
 

Technical details

The AMD Athlon II X4 651 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 Intel Core i7-8665U is manufactured using a 14 nm process.
In total, this processor boasts a generous 8.0 MB cache.
Windows 10, Linux Operating systems Windows 10, Linux, Windows 11
32 nm Technology 14 nm
-- Chip design Monolithic
SSE3, SSE4a, MMX, 3DNow! ISA extensions SSE4.1, SSE4.2, AVX2
-- Part Number --
Q4/2011 Release date Q2/2019
Llano Architecture Whiskey Lake U
Technical data sheet Documents Technical data sheet
AMD-V Virtualization VT-x, VT-x EPT, VT-d
FM1 Socket BGA 1356
4.0 MB L2-Cache 0 bytes
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
0 bytes L3-Cache 8.0 MB
-- Release price 409 $