Intel Core i5-6400T vs AMD Phenom II X2 555

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CPU comparison with benchmarks


Intel Core i5-6400T CPU1 vs CPU2 AMD Phenom II X2 555
Intel Core i5-6400T AMD Phenom II X2 555

CPU comparison

Intel Core i5-6400T or AMD Phenom II X2 555 - 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 i5-6400T has 4 cores with 4 threads and clocks with a maximum frequency of 2.80 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i5-6400T was released in Q3/2015.

The AMD Phenom II X2 555 has 2 cores with 2 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Phenom II X2 555 was released in Q2/2010.
Intel Core i5 (331) Family AMD Phenom II (52)
Intel Core i 6000 (24) CPU group AMD Phenom II - 545 (9)
6 Generation 2
Skylake S Architecture Callisto (K10)
Desktop / Server Segment Desktop / Server
-- Predecessor --
Intel Core i5-7400T Successor --

CPU Cores and Base Frequency

The Intel Core i5-6400T has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Intel Core i5-6400T is 2.20 GHz (2.80 GHz) while the AMD Phenom II X2 555 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the AMD Phenom II X2 555 is at 3.20 GHz.

Intel Core i5-6400T Characteristic AMD Phenom II X2 555
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? Yes
2.20 GHz Frequency 3.20 GHz
2.80 GHz Turbo Frequency (1 Core) --
2.50 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 i5-6400T Characteristic AMD Phenom II X2 555
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i5-6400T or AMD Phenom II X2 555 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.

Intel HD Graphics 530 GPU no iGPU
0.35 GHz GPU frequency --
1.15 GHz GPU (Turbo) --
9 GPU Generation --
14 nm Technology
3 Max. displays
24 Compute units --
192 Shader --
No Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory --
12 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 HD Graphics 530 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode Codec VP9 No
Decode / Encode Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Core i5-6400T can use up to 64 GB of memory in 2 memory channels. The maximum memory bandwidth is 34.1 GB/s. The AMD Phenom II X2 555 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s.

Intel Core i5-6400T Characteristic AMD Phenom II X2 555
DDR4-2133, DDR3-1600 Memory DDR3-1333, DDR2-1066
64 GB Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
34.1 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
-- L2 Cache --
6.00 MB L3 Cache 6.00 MB
3.0 PCIe version --
16 PCIe lanes --
15.8 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Intel Core i5-6400T is 35 W, while the AMD Phenom II X2 555 has a TDP of 80 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i5-6400T Characteristic AMD Phenom II X2 555
35 W TDP (PL1 / PBP) 80 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core i5-6400T is manufactured in 14 nm and has 6.00 MB cache. The AMD Phenom II X2 555 is manufactured in 45 nm and has a 6.00 MB cache.

Intel Core i5-6400T Characteristic AMD Phenom II X2 555
14 nm Technology 45 nm
Monolithic Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE3, SSE4a
LGA 1151 Socket AM3
VT-x, VT-x EPT, VT-d Virtualization AMD-V
Yes AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2015 Release date Q2/2010
-- Release price --
show more data show more data


Rate these processors

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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i5-6400T (100%)
AMD Phenom II X2 555 (65%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core i5-6400T (100%)
AMD Phenom II X2 555 (40%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.80 GHz
711 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
409 (58%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.50 GHz
2257 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
767 (34%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.50 GHz
4312 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
2060 (48%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.80 GHz
119 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
84 (71%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.50 GHz
414 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
162 (39%)

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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.80 GHz
967 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.50 GHz
2732 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 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 i5-6400T Intel Core i5-6400T
Intel HD Graphics 530 @ 1.15 GHz
442 (100%)
AMD Phenom II X2 555 AMD Phenom II X2 555
@ 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 i5-6400T Intel Core i5-6400T
4C 4T @ 2.20 GHz
0 (0%)
AMD Phenom II X2 555 AMD Phenom II X2 555
2C 2T @ 3.20 GHz
290 (100%)

Devices using this processor

Intel Core i5-6400T AMD Phenom II X2 555
Unknown Unknown

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