AMD Athlon II X4 651K vs Intel Core i5-4402EC

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CPU comparison with benchmarks


AMD Athlon II X4 651K CPU1 vs CPU2 Intel Core i5-4402EC
AMD Athlon II X4 651K Intel Core i5-4402EC

CPU comparison

In this CPU comparison, we compare the AMD Athlon II X4 651K and the Intel Core i5-4402EC and use benchmarks to check which processor is faster.

We compare the AMD Athlon II X4 651K 4 core processor released in Q4/2011 with the Intel Core i5-4402EC which has 2 CPU cores and was introduced in Q1/2014.
AMD Athlon II (52) Family Intel Core i5 (331)
AMD Athlon II X4 (Llano) (5) CPU group Intel Core i 4000 (64)
2 Generation 4
Llano Architecture Haswell S
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Athlon II X4 651K is a 4 core processor with a clock frequency of 3.00 GHz. The processor can compute 4 threads at the same time. The Intel Core i5-4402EC clocks with 2.50 GHz, has 2 CPU cores and can calculate 4 threads in parallel.

AMD Athlon II X4 651K Characteristic Intel Core i5-4402EC
4 Cores 2
4 Threads 4
normal Core architecture normal
No Hyperthreading Yes
Yes Overclocking ? No
3.00 GHz Frequency 2.50 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 651K Characteristic Intel Core i5-4402EC
-- 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 Intel HD Graphics 4600
GPU frequency 0.40 GHz
-- GPU (Turbo) 0.90 GHz
-- GPU Generation 7.5
Technology 22 nm
Max. displays 3
-- Compute units 20
-- Shader 160
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 11.1

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 Intel HD Graphics 4600
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode

Memory & PCIe

Up to 16 GB of memory in a maximum of 2 memory channels is supported by the AMD Athlon II X4 651K, while the Intel Core i5-4402EC supports a maximum of 32 GB of memory with a maximum memory bandwidth of 25.6 GB/s enabled.

AMD Athlon II X4 651K Characteristic Intel Core i5-4402EC
DDR3-1333 Memory DDR3-1600
16 GB Max. Memory 32 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 25.6 GB/s
No ECC Yes
4.00 MB L2 Cache --
-- L3 Cache 4.00 MB
2.0 PCIe version 3.0
-- PCIe lanes 16
-- PCIe Bandwidth 15.8 GB/s

Thermal Management

The AMD Athlon II X4 651K has a TDP of 100 W. The TDP of the Intel Core i5-4402EC is 27 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Athlon II X4 651K Characteristic Intel Core i5-4402EC
100 W TDP (PL1 / PBP) 27 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. 100 °C

Technical details

The AMD Athlon II X4 651K has 4.00 MB cache and is manufactured in 32 nm. The cache of Intel Core i5-4402EC is at 4.00 MB. The processor is manufactured in 22 nm.

AMD Athlon II X4 651K Characteristic Intel Core i5-4402EC
32 nm Technology 22 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, 3DNow!, SSE3, SSE4a ISA extensions SSE4.1, SSE4.2, AVX2
FM1 Socket BGA 1364
AMD-V Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q4/2011 Release date Q1/2014
-- Release price --
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Average performance in benchmarks

⌀ Single core performance in 0 CPU benchmarks
AMD Athlon II X4 651K (0%)
Intel Core i5-4402EC (0%)
⌀ Multi core performance in 1 CPU benchmarks
AMD Athlon II X4 651K (77%)
Intel Core i5-4402EC (100%)

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 651K AMD Athlon II X4 651K
4C 4T @ 3.00 GHz
2349 (77%)
Intel Core i5-4402EC Intel Core i5-4402EC
2C 4T @ 2.50 GHz
3060 (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 Athlon II X4 651K AMD Athlon II X4 651K
4C 4T @ 3.00 GHz
411 (100%)
Intel Core i5-4402EC Intel Core i5-4402EC
2C 4T @ 2.50 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 Athlon II X4 651K AMD Athlon II X4 651K
4C 4T @ 3.00 GHz
1467 (100%)
Intel Core i5-4402EC Intel Core i5-4402EC
2C 4T @ 2.50 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 II X4 651K AMD Athlon II X4 651K
@ 0.00 GHz
0 (0%)
Intel Core i5-4402EC Intel Core i5-4402EC
Intel HD Graphics 4600 @ 0.90 GHz
288 (100%)

Devices using this processor

AMD Athlon II X4 651K Intel Core i5-4402EC
Unknown Unknown

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