AMD A4-4020 vs AMD Ryzen 5 7645HX Benchmark, comparison and differences


AMD A4-4020		AMD Ryzen 5 7645HX
CPU comparison In this CPU comparison, we compare the AMD A4-4020 and the AMD Ryzen 5 7645HX and use benchmarks to check which processor is faster. We compare the AMD A4-4020 2 core processor released in Q1/2014 with the AMD Ryzen 5 7645HX which has 6 CPU cores and was introduced in Q1/2023.

AMD A (112)	Family	AMD Ryzen 5 (86)
AMD A4-4000 (2)	CPU group	AMD Ryzen 7045 (6)
2	Generation	6
Richland (Piledriver)	Architecture	Dragon Range (Zen 4)
Desktop / Server	Segment	Mobile
--	Predecessor	--
--	Successor	--

CPU Cores and Base Frequency The AMD A4-4020 is a 2 core processor with a clock frequency of 3.20 GHz (3.40 GHz). The processor can compute 2 threads at the same time. The AMD Ryzen 5 7645HX clocks with 4.00 GHz (5.00 GHz), has 6 CPU cores and can calculate 12 threads in parallel.
AMD A4-4020	Characteristic	AMD Ryzen 5 7645HX
2	Cores	6
2	Threads	12
normal	Core architecture	normal
No	Hyperthreading	Yes
Yes	Overclocking ?	Yes
3.20 GHz	Frequency	4.00 GHz
3.40 GHz	Turbo Frequency (1 Core)	5.00 GHz
3.40 GHz	Turbo Frequency (All Cores)	--

Artificial Intelligence and Machine Learning Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.
AMD A4-4020	Characteristic	AMD Ryzen 5 7645HX
--	AI hardware	--
--	AI specifications	--

Internal Graphics Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.
AMD Radeon HD 7480D	GPU	AMD Radeon 610M
0.72 GHz	GPU frequency	0.40 GHz
--	GPU (Turbo)	2.20 GHz
4	GPU Generation	9
32 nm	Technology	6 nm
2	Max. displays	3
2	Compute units	2
128	Shader	128
No	Hardware Raytracing	Yes
No	Frame Generation	No
2 GB	Max. GPU Memory	8 GB
11	DirectX Version	12

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.
AMD Radeon HD 7480D	GPU	AMD Radeon 610M
No	Codec h265 / HEVC (8 bit)	Decode / Encode
No	Codec h265 / HEVC (10 bit)	Decode / Encode
Decode	Codec h264	Decode / Encode
No	Codec VP9	Decode / Encode
No	Codec VP8	Decode / Encode
No	Codec AV1	Decode
Decode	Codec AVC	Decode / Encode
Decode	Codec VC-1	Decode
Decode / Encode	Codec JPEG	Decode / Encode

Memory & PCIe Up to GB of memory in a maximum of 2 memory channels is supported by the AMD A4-4020, while the AMD Ryzen 5 7645HX supports a maximum of 128 GB of memory with a maximum memory bandwidth of 83.2 GB/s enabled.
AMD A4-4020	Characteristic	AMD Ryzen 5 7645HX
DDR3-1333	Memory	DDR5-5200
	Max. Memory	128 GB
2 (Dual Channel)	Memory channels	2 (Dual Channel)
21.3 GB/s	Max. Bandwidth	83.2 GB/s
No	ECC	Yes
--	L2 Cache	6.00 MB
1.00 MB	L3 Cache	32.00 MB
--	PCIe version	5.0
--	PCIe lanes	28
--	PCIe Bandwidth	110.3 GB/s
Thermal Management The AMD A4-4020 has a TDP of 65 W. The TDP of the AMD Ryzen 5 7645HX is 55 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.
AMD A4-4020	Characteristic	AMD Ryzen 5 7645HX
65 W	TDP (PL1 / PBP)	55 W
--	TDP (PL2)	--
--	TDP up	75 W
--	TDP down	45 W
--	Tjunction max.	100 °C
Technical details The AMD A4-4020 has 1.00 MB cache and is manufactured in 32 nm. The cache of AMD Ryzen 5 7645HX is at 38.00 MB. The processor is manufactured in 5 nm.
AMD A4-4020	Characteristic	AMD Ryzen 5 7645HX
32 nm	Technology	5 nm
Unknown	Chip design	Chiplet
x86-64 (64 bit)	Instruction set (ISA)	x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4	ISA extensions	SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
FM2	Socket	FL1
AMD-V	Virtualization	AMD-V, SVM
Yes	AES-NI	Yes
Windows 10, Linux	Operating systems	Windows 10, Windows 11, Linux
Q1/2014	Release date	Q1/2023
32 $	Release price	--

show more data		show more data

AMD A4-4020 2C 2T @ 3.20 GHz (3.40 GHz) buy now on Amazon and save! AMD Ryzen 5 7645HX 6C 12T @ 4.00 GHz (5.00 GHz) buy now on Amazon and save!

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iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.


	AMD A4-4020 AMD Radeon HD 7480D @ 0.72 GHz	184 (42%)
	AMD Ryzen 5 7645HX AMD Radeon 610M @ 2.20 GHz	443 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	AMD A4-4020 2C 2T @ 3.40 GHz	0 (0%)
	AMD Ryzen 5 7645HX 6C 12T @ 5.00 GHz	1802 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	AMD A4-4020 2C 2T @ 3.40 GHz	0 (0%)
	AMD Ryzen 5 7645HX 6C 12T @ 4.00 GHz	13824 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.


	AMD A4-4020 2C 2T @ 3.40 GHz	379 (100%)
	AMD Ryzen 5 7645HX 6C 12T @ 5.00 GHz	0 (0%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.


	AMD A4-4020 2C 2T @ 3.40 GHz	560 (100%)
	AMD Ryzen 5 7645HX 6C 12T @ 4.00 GHz	0 (0%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.


	AMD A4-4020 2C 2T @ 3.40 GHz	1740 (100%)
	AMD Ryzen 5 7645HX 6C 12T @ 4.00 GHz	0 (0%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.


	AMD A4-4020 3.20 GHz	0 (0%)
	AMD Ryzen 5 7645HX 13,824 CB R23 MC @ 51 W	270 (100%)


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AMD A4-4020 vs AMD Ryzen 5 7645HX

CPU comparison with benchmarks

CPU comparison

CPU Cores and Base Frequency

Artificial Intelligence and Machine Learning

Internal Graphics

Hardware codec support

Memory & PCIe

Thermal Management

Technical details