Intel Core i5-5257U vs Intel Core2 Duo E4400

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CPU comparison with benchmarks


Intel Core i5-5257U CPU1 vs CPU2 Intel Core2 Duo E4400
Intel Core i5-5257U Intel Core2 Duo E4400

CPU comparison

Intel Core i5-5257U or Intel Core2 Duo E4400 - 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 Intel Core i5-5257U has 2 cores with 4 threads and clocks with a maximum frequency of 3.10 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Core i5-5257U was released in Q1/2015.

The Intel Core2 Duo E4400 has 2 cores with 2 threads and clocks with a maximum frequency of 2.00 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core2 Duo E4400 was released in Q3/2007.
Intel Core i5 (328) Family Intel Core2 Duo (29)
Intel Core i 5000U (16) CPU group Intel Core 2 Duo E4000/E6000 (15)
5 Generation 1
Broadwell U Architecture Conroe (Core)
Mobile Segment Desktop / Server
Intel Core i5-4258U Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i5-5257U is a 2 core processor with a clock frequency of 2.70 GHz (3.10 GHz). The Intel Core2 Duo E4400 has 2 CPU cores with a clock frequency of 2.00 GHz.

Intel Core i5-5257U Characteristic Intel Core2 Duo E4400
2 Cores 2
4 Threads 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? Yes
2.70 GHz Frequency 2.00 GHz
3.10 GHz Turbo Frequency (1 Core) --
3.10 GHz 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.

Intel Core i5-5257U Characteristic Intel Core2 Duo E4400
-- AI hardware --
-- AI specifications --

Internal Graphics

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.

Intel Iris Graphics 6100 GPU no iGPU
0.30 GHz GPU frequency --
1.05 GHz GPU (Turbo) --
8 GPU Generation --
14 nm Technology
3 Max. displays
48 Compute units --
384 Shader --
No Hardware Raytracing No
No Frame Generation No
16 GB Max. GPU Memory --
11.2 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.

Intel Iris Graphics 6100 GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
No Codec VP9 No
Decode Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode Codec JPEG No

Memory & PCIe

The Intel Core i5-5257U supports a maximum of 16 GB of memory in 2 memory channels. The Intel Core2 Duo E4400 can connect up to 16 GB of memory in 2 memory channels.

Intel Core i5-5257U Characteristic Intel Core2 Duo E4400
LPDDR3-1866, DDR3-1600 Memory DDR3-1333, DDR2-1066
16 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
-- L2 Cache 2.00 MB
3.00 MB L3 Cache --
2.0 PCIe version --
12 PCIe lanes --
6.0 GB/s PCIe Bandwidth --

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i5-5257U has a TDP of 28 W, that of the Intel Core2 Duo E4400 is 65 W.

Intel Core i5-5257U Characteristic Intel Core2 Duo E4400
28 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
23 W TDP down --
105 °C Tjunction max. --

Technical details

The Intel Core i5-5257U has a 3.00 MB cache, while the Intel Core2 Duo E4400 cache has a total of 2.00 MB.

Intel Core i5-5257U Characteristic Intel Core2 Duo E4400
14 nm Technology 65 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions MMX, SSE, SSE2, SSE3
BGA 1168 Socket LGA 775
VT-x, VT-x EPT, VT-d Virtualization VT-x
Yes AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q1/2015 Release date Q3/2007
-- Release price --
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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
760 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
292 (38%)

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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
1649 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
532 (32%)

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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
3034 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
632 (21%)

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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
971 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
1964 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
277 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
706 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 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.
Intel Core i5-5257U Intel Core i5-5257U
Intel Iris Graphics 6100 @ 1.05 GHz
806 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
@ 0.00 GHz
0 (0%)

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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 2.70 GHz
0 (0%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
312 (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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
126 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 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.
Intel Core i5-5257U Intel Core i5-5257U
2C 4T @ 3.10 GHz
327 (100%)
Intel Core2 Duo E4400 Intel Core2 Duo E4400
2C 2T @ 2.00 GHz
0 (0%)

Devices using this processor

Intel Core i5-5257U Intel Core2 Duo E4400
Unknown Unknown

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