AMD Athlon II X4 638 vs AMD Athlon II X4 620 Benchmark, comparison and differences


AMD Athlon II X4 638		AMD Athlon II X4 620
CPU comparison AMD Athlon II X4 638 or AMD Athlon II X4 620 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results. The AMD Athlon II X4 638 has 4 cores with 4 threads and clocks with a maximum frequency of 2.70 GHz. Up to 16 GB of memory is supported in 2 memory channels. The AMD Athlon II X4 638 was released in Q1/2012. The AMD Athlon II X4 620 has 4 cores with 4 threads and clocks with a maximum frequency of 2.60 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The AMD Athlon II X4 620 was released in Q3/2009.

AMD Athlon II (52)	Family	AMD Athlon II (52)
AMD Athlon II X4 (Llano) (5)	CPU group	AMD Athlon II X4 (Propus) (10)
2	Generation	1
Llano	Architecture	Propus
Desktop / Server	Segment	Desktop / Server
--	Predecessor	--
--	Successor	--

CPU Cores and Base Frequency The AMD Athlon II X4 638 is a 4 core processor with a clock frequency of 2.70 GHz. The AMD Athlon II X4 620 has 4 CPU cores with a clock frequency of 2.60 GHz.
AMD Athlon II X4 638	Characteristic	AMD Athlon II X4 620
4	Cores	4
4	Threads	4
normal	Core architecture	normal
No	Hyperthreading	No
No	Overclocking ?	No
2.70 GHz	Frequency	2.60 GHz
--	Turbo Frequency (1 Core)	--
--	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 Athlon II X4 638	Characteristic	AMD Athlon II X4 620
--	AI hardware	--
--	AI specifications	--

Internal Graphics The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
no iGPU	GPU	no iGPU
	GPU frequency	--
--	GPU (Turbo)	--
--	GPU Generation	--
	Technology
	Max. displays
--	Compute units	--
--	Shader	--
No	Hardware Raytracing	No
No	Frame Generation	No
--	Max. GPU Memory	--
--	DirectX Version	--

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.
no iGPU	GPU	no iGPU
No	Codec h265 / HEVC (8 bit)	No
No	Codec h265 / HEVC (10 bit)	No
No	Codec h264	No
No	Codec VP9	No
No	Codec VP8	No
No	Codec AV1	No
No	Codec AVC	No
No	Codec VC-1	No
No	Codec JPEG	No

AMD Athlon II X4 638 or AMD Athlon II X4 620 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD Athlon II X4 638 has 4 cores with 4 threads and clocks with a maximum frequency of 2.70 GHz. Up to 16 GB of memory is supported in 2 memory channels. The AMD Athlon II X4 638 was released in Q1/2012.

The AMD Athlon II X4 620 has 4 cores with 4 threads and clocks with a maximum frequency of 2.60 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The AMD Athlon II X4 620 was released in Q3/2009.

Memory & PCIe The AMD Athlon II X4 638 supports a maximum of 16 GB of memory in 2 memory channels. The AMD Athlon II X4 620 can connect up to 16 GB of memory in 2 memory channels.
AMD Athlon II X4 638	Characteristic	AMD Athlon II X4 620
DDR3-1333	Memory	DDR3-1333
16 GB	Max. Memory	16 GB
2 (Dual Channel)	Memory channels	2 (Dual Channel)
21.3 GB/s	Max. Bandwidth	21.3 GB/s
No	ECC	No
4.00 MB	L2 Cache	2.00 MB
--	L3 Cache	--
2.0	PCIe version	2.0
--	PCIe lanes	--
--	PCIe Bandwidth	--
Thermal Management The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Athlon II X4 638 has a TDP of 65 W, that of the AMD Athlon II X4 620 is 95 W.
AMD Athlon II X4 638	Characteristic	AMD Athlon II X4 620
65 W	TDP (PL1 / PBP)	95 W
--	TDP (PL2)	--
--	TDP up	--
--	TDP down	--
--	Tjunction max.	--
Technical details The AMD Athlon II X4 638 has a 4.00 MB cache, while the AMD Athlon II X4 620 cache has a total of 2.00 MB.
AMD Athlon II X4 638	Characteristic	AMD Athlon II X4 620
32 nm	Technology	45 nm
Unknown	Chip design	Unknown
x86-64 (64 bit)	Instruction set (ISA)	x86-64 (64 bit)
MMX, 3DNow!, SSE3, SSE4a	ISA extensions	MMX, 3DNow!, SSE3, SSE4a
FM1	Socket	AM3
AMD-V	Virtualization	AMD-V
No	AES-NI	No
Windows 10, Linux	Operating systems	Windows 10, Linux
Q1/2012	Release date	Q3/2009
--	Release price	--

show more data		show more data

AMD Athlon II X4 638 4C 4T @ 2.70 GHz buy now on Amazon and save! AMD Athlon II X4 620 4C 4T @ 2.60 GHz buy now on Amazon and save!

AMD Athlon II X4 638
4C 4T @ 2.70 GHz

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AMD Athlon II X4 620
4C 4T @ 2.60 GHz

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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks

AMD Athlon II X4 638 (100%)

AMD Athlon II X4 620 (89%)

⌀ Multi core performance in 2 CPU benchmarks

AMD Athlon II X4 638 (100%)

AMD Athlon II X4 620 (86%)

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 Athlon II X4 638 4C 4T @ 2.70 GHz	374 (100%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	334 (89%)

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 Athlon II X4 638 4C 4T @ 2.70 GHz	1326 (100%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	1155 (87%)

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 Athlon II X4 638 4C 4T @ 2.70 GHz	2248 (100%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	1916 (85%)

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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	337 (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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	1275 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	132 (100%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	505 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	62 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Athlon II X4 638 4C 4T @ 2.70 GHz	0 (0%)
	AMD Athlon II X4 620 4C 4T @ 2.60 GHz	238 (100%)


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AMD Athlon II X4 638 vs AMD Athlon II X4 620

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