AMD Athlon II X3 420e vs Intel Core i5-655K

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CPU comparison with benchmarks


AMD Athlon II X3 420e CPU1 vs CPU2 Intel Core i5-655K
AMD Athlon II X3 420e Intel Core i5-655K

CPU comparison

AMD Athlon II X3 420e or Intel Core i5-655K - 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 X3 420e has 3 cores with 3 threads and clocks with a maximum frequency of 2.60 GHz. Up to 16 GB of memory is supported in 2 memory channels. The AMD Athlon II X3 420e was released in Q3/2010.

The Intel Core i5-655K has 2 cores with 4 threads and clocks with a maximum frequency of 3.46 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core i5-655K was released in Q1/2010.
AMD Athlon II (52) Family Intel Core i5 (331)
AMD Athlon II X3 (Rana) (12) CPU group Intel Core i5 600 (6)
1 Generation 1
Rana Architecture Clarkdale
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Athlon II X3 420e is a 3 core processor with a clock frequency of 2.60 GHz. The Intel Core i5-655K has 2 CPU cores with a clock frequency of 3.20 GHz (3.46 GHz).

AMD Athlon II X3 420e Characteristic Intel Core i5-655K
3 Cores 2
3 Threads 4
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.60 GHz Frequency 3.20 GHz
-- Turbo Frequency (1 Core) 3.46 GHz
-- Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

AMD Athlon II X3 420e Characteristic Intel Core i5-655K
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

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 Intel HD Graphics (Westmere)
GPU frequency 0.50 GHz
-- GPU (Turbo) 0.73 GHz
-- GPU Generation 5
Technology 32 nm
Max. displays 2
-- Compute units 12
-- Shader 24
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 10.1

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 (Westmere)
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 No
No Codec JPEG No

Memory & PCIe

The AMD Athlon II X3 420e supports a maximum of 16 GB of memory in 2 memory channels. The Intel Core i5-655K can connect up to 16 GB of memory in 2 memory channels.

AMD Athlon II X3 420e Characteristic Intel Core i5-655K
DDR3-1333 Memory DDR3-1066, 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
1.50 MB L2 Cache 0.50 MB
-- L3 Cache 4.00 MB
2.0 PCIe version 2.0
-- PCIe lanes 16
-- PCIe Bandwidth 8.0 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Athlon II X3 420e has a TDP of 45 W, that of the Intel Core i5-655K is 73 W.

AMD Athlon II X3 420e Characteristic Intel Core i5-655K
45 W TDP (PL1 / PBP) 73 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD Athlon II X3 420e has a 1.50 MB cache, while the Intel Core i5-655K cache has a total of 4.50 MB.

AMD Athlon II X3 420e Characteristic Intel Core i5-655K
45 nm Technology 32 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
AM3 Socket LGA 1156
AMD-V Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2010 Release date Q1/2010
-- Release price 177 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
AMD Athlon II X3 420e (56%)
Intel Core i5-655K (100%)
⌀ Multi core performance in 2 CPU benchmarks
AMD Athlon II X3 420e (70%)
Intel Core i5-655K (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 X3 420e AMD Athlon II X3 420e
3C 3T @ 2.60 GHz
314 (56%)
Intel Core i5-655K Intel Core i5-655K
2C 4T @ 3.46 GHz
564 (100%)

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 X3 420e AMD Athlon II X3 420e
3C 3T @ 2.60 GHz
880 (70%)
Intel Core i5-655K Intel Core i5-655K
2C 4T @ 3.20 GHz
1252 (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 X3 420e AMD Athlon II X3 420e
3C 3T @ 2.60 GHz
1555 (70%)
Intel Core i5-655K Intel Core i5-655K
2C 4T @ 3.20 GHz
2221 (100%)

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 X3 420e AMD Athlon II X3 420e
@ 0.00 GHz
0 (0%)
Intel Core i5-655K Intel Core i5-655K
Intel HD Graphics (Westmere) @ 0.73 GHz
35 (100%)

Devices using this processor

AMD Athlon II X3 420e Intel Core i5-655K
Unknown Unknown

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