HiSilicon Kirin 620 vs Intel Core2 Duo E6400

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CPU comparison with benchmarks


HiSilicon Kirin 620 CPU1 vs CPU2 Intel Core2 Duo E6400
HiSilicon Kirin 620 Intel Core2 Duo E6400

CPU comparison

HiSilicon Kirin 620 or Intel Core2 Duo E6400 - 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 HiSilicon Kirin 620 has 4 cores with 4 threads and clocks with a maximum frequency of 1.20 GHz. Up to GB of memory is supported in 1 memory channels. The HiSilicon Kirin 620 was released in Q1/2015.

The Intel Core2 Duo E6400 has 2 cores with 2 threads and clocks with a maximum frequency of 2.13 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core2 Duo E6400 was released in Q3/2006.
HiSilicon Kirin (29) Family Intel Core2 Duo (29)
HiSilicon Kirin 620 (1) CPU group Intel Core 2 Duo E4000/E6000 (15)
3 Generation 1
Cortex-A53 Architecture Conroe (Core)
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The HiSilicon Kirin 620 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the HiSilicon Kirin 620 is 1.20 GHz while the Intel Core2 Duo E6400 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the Intel Core2 Duo E6400 is at 2.13 GHz.

HiSilicon Kirin 620 Characteristic Intel Core2 Duo E6400
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? Yes
1.20 GHz Frequency 2.13 GHz
-- Turbo Frequency (1 Core) --
-- 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.

HiSilicon Kirin 620 Characteristic Intel Core2 Duo E6400
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The HiSilicon Kirin 620 or Intel Core2 Duo E6400 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

ARM Mali-450 MP4 GPU no iGPU
0.53 GHz GPU frequency --
0.53 GHz GPU (Turbo) --
Utgard GPU Generation --
28nm Technology
1 Max. displays
4 Compute units --
64 Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
0 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.

ARM Mali-450 MP4 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

Memory & PCIe

The HiSilicon Kirin 620 can use up to GB of memory in 1 memory channels. The maximum memory bandwidth is --. The Intel Core2 Duo E6400 supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s.

HiSilicon Kirin 620 Characteristic Intel Core2 Duo E6400
LPDDR3 Memory DDR3-1333, DDR2-1066
Max. Memory 16 GB
1 (Single Channel) Memory channels 2 (Dual Channel)
-- Max. Bandwidth 21.3 GB/s
No ECC No
-- L2 Cache 2.00 MB
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the HiSilicon Kirin 620 is --, while the Intel Core2 Duo E6400 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

HiSilicon Kirin 620 Characteristic Intel Core2 Duo E6400
-- TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The HiSilicon Kirin 620 is manufactured in 28 nm and has 0.00 MB cache. The Intel Core2 Duo E6400 is manufactured in 65 nm and has a 2.00 MB cache.

HiSilicon Kirin 620 Characteristic Intel Core2 Duo E6400
28 nm Technology 65 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions MMX, SSE, SSE2, SSE3
-- Socket LGA 775
None Virtualization VT-x
No AES-NI No
Android Operating systems Windows 10, Linux
Q1/2015 Release date Q3/2006
-- Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
HiSilicon Kirin 620 (35%)
Intel Core2 Duo E6400 (100%)
⌀ Multi core performance in 1 CPU benchmarks
HiSilicon Kirin 620 (95%)
Intel Core2 Duo E6400 (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.
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
102 (35%)
Intel Core2 Duo E6400 Intel Core2 Duo E6400
2C 2T @ 2.13 GHz
295 (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.
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
505 (95%)
Intel Core2 Duo E6400 Intel Core2 Duo E6400
2C 2T @ 2.13 GHz
534 (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.
HiSilicon Kirin 620 HiSilicon Kirin 620
ARM Mali-450 MP4 @ 0.53 GHz
32 (100%)
Intel Core2 Duo E6400 Intel Core2 Duo E6400
@ 0.00 GHz
0 (0%)

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.
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
0 (0%)
Intel Core2 Duo E6400 Intel Core2 Duo E6400
2C 2T @ 2.13 GHz
772 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
0 (0%)
Intel Core2 Duo E6400 Intel Core2 Duo E6400
2C 2T @ 2.13 GHz
337 (100%)

Devices using this processor

HiSilicon Kirin 620 Intel Core2 Duo E6400
Unknown Unknown

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