A8-3820 vs Athlon II X4 638

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Aggregate performance score

Athlon II X4 638
2012
4 cores / 4 threads, 65 Watt
1.44
+3.6%
A8-3820
2011
4 cores / 4 threads, 65 Watt
1.39

Athlon II X4 638 outperforms A8-3820 by a minimal 4% based on our aggregate benchmark results.

Primary details

Comparing Athlon II X4 638 and A8-3820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking21912228
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency2.061.99
Architecture codenameLlano (2011−2012)Llano (2011−2012)
Release date6 February 2012 (12 years ago)20 December 2011 (12 years ago)

Detailed specifications

Athlon II X4 638 and A8-3820 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speed2.7 GHz2.5 GHz
Boost clock speed2.7 GHz2.8 GHz
L1 cache128 KB (per core)128 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache0 KB0 KB
Chip lithography32 nm32 nm
Die size228 mm2228 mm2
Number of transistors1,178 million1,178 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Athlon II X4 638 and A8-3820 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketFM1FM1
Power consumption (TDP)65 Watt65 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 638 and A8-3820 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 638 and A8-3820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon HD 6550D

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Athlon II X4 638 1.44
+3.6%
A8-3820 1.39

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Athlon II X4 638 2250
+3.5%
A8-3820 2174

Gaming performance

Pros & cons summary


Performance score 1.44 1.39
Recency 6 February 2012 20 December 2011

Athlon II X4 638 has a 3.6% higher aggregate performance score, and an age advantage of 1 month.

Given the minimal performance differences, no clear winner can be declared between Athlon II X4 638 and A8-3820.


Should you still have questions on choice between Athlon II X4 638 and A8-3820, ask them in Comments section, and we shall answer.

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AMD Athlon II X4 638
Athlon II X4 638
AMD A8-3820
A8-3820

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3.1 34 votes

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3.5 47 votes

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Questions & comments

Here you can ask a question about Athlon II X4 638 or A8-3820, agree or disagree with our judgements, or report an error or mismatch.