AMD Athlon X4 845 vs AMD A4-4020

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CPU comparison with benchmarks


AMD Athlon X4 845 CPU1 vs CPU2 AMD A4-4020
AMD Athlon X4 845 AMD A4-4020

CPU comparison

In this CPU comparison, we compare the AMD Athlon X4 845 and the AMD A4-4020 and use benchmarks to check which processor is faster.

We compare the AMD Athlon X4 845 4 core processor released in Q1/2016 with the AMD A4-4020 which has 2 CPU cores and was introduced in Q1/2014.
AMD Athlon (29) Family AMD A (112)
AMD Athlon X4 (Carizzo) (2) CPU group AMD A4-4000 (2)
2 Generation 2
Carizzo Architecture Richland (Piledriver)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Athlon X4 845 is a 4 core processor with a clock frequency of 3.50 GHz (3.80 GHz). The processor can compute 4 threads at the same time. The AMD A4-4020 clocks with 3.20 GHz (3.40 GHz), has 2 CPU cores and can calculate 2 threads in parallel.

AMD Athlon X4 845 Characteristic AMD A4-4020
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? Yes
3.50 GHz Frequency 3.20 GHz
3.80 GHz Turbo Frequency (1 Core) 3.40 GHz
3.80 GHz Turbo Frequency (All Cores) 3.40 GHz

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 X4 845 Characteristic AMD A4-4020
-- 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.

no iGPU GPU AMD Radeon HD 7480D
GPU frequency 0.72 GHz
-- GPU (Turbo) --
-- GPU Generation 4
Technology 32 nm
Max. displays 2
-- Compute units 2
-- Shader 128
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 11

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

Memory & PCIe

Up to GB of memory in a maximum of 2 memory channels is supported by the AMD Athlon X4 845, while the AMD A4-4020 supports a maximum of GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled.

AMD Athlon X4 845 Characteristic AMD A4-4020
DDR3-2133 Memory DDR3-1333
Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
34.2 GB/s Max. Bandwidth 21.3 GB/s
Yes ECC No
-- L2 Cache --
2.00 MB L3 Cache 1.00 MB
3.0 PCIe version --
8 PCIe lanes --
7.9 GB/s PCIe Bandwidth --

Thermal Management

The AMD Athlon X4 845 has a TDP of 65 W. The TDP of the AMD A4-4020 is 65 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Athlon X4 845 Characteristic AMD A4-4020
65 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD Athlon X4 845 has 2.00 MB cache and is manufactured in 28 nm. The cache of AMD A4-4020 is at 1.00 MB. The processor is manufactured in 32 nm.

AMD Athlon X4 845 Characteristic AMD A4-4020
28 nm Technology 32 nm
Unknown Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4
FM2+ Socket FM2
None Virtualization AMD-V
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q1/2016 Release date Q1/2014
65 $ Release price 32 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks

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 X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
603 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
379 (63%)

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 X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
1832 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
560 (31%)

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 X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
3794 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
1740 (46%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
AMD Athlon X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
695 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
0 (0%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
AMD Athlon X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
1772 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
0 (0%)

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 Athlon X4 845 AMD Athlon X4 845
@ 0.00 GHz
0 (0%)
AMD A4-4020 AMD A4-4020
AMD Radeon HD 7480D @ 0.72 GHz
184 (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 X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
93 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
0 (0%)

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 X4 845 AMD Athlon X4 845
4C 4T @ 3.80 GHz
316 (100%)
AMD A4-4020 AMD A4-4020
2C 2T @ 3.40 GHz
0 (0%)

Devices using this processor

AMD Athlon X4 845 AMD A4-4020
Unknown Unknown

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