MediaTek Dimensity 800U vs Intel Core i7-5820K

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CPU comparison with benchmarks


MediaTek Dimensity 800U CPU1 vs CPU2 Intel Core i7-5820K
MediaTek Dimensity 800U Intel Core i7-5820K

CPU comparison

In this CPU comparison, we compare the MediaTek Dimensity 800U and the Intel Core i7-5820K and use benchmarks to check which processor is faster.

We compare the MediaTek Dimensity 800U 8 core processor released in Q3/2020 with the Intel Core i7-5820K which has 6 CPU cores and was introduced in Q3/2014.
Mediatek Dimensity (36) Family Intel Core i7 Extreme Edition (24)
MediaTek Dimensity 700/720/800 (4) CPU group Intel Core i 5000X (3)
1 Generation 5
Cortex-A76 / Cortex-A55 Architecture Haswell E
Mobile Segment Desktop / Server
-- Predecessor Intel Core i7-4820K
-- Successor --

CPU Cores and Base Frequency

The MediaTek Dimensity 800U is a 8 core processor with a clock frequency of 2.40 GHz. The processor can compute 8 threads at the same time. The Intel Core i7-5820K clocks with 3.30 GHz (3.60 GHz), has 6 CPU cores and can calculate 12 threads in parallel.

MediaTek Dimensity 800U Characteristic Intel Core i7-5820K
8 Cores 6
8 Threads 12
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.40 GHz
2x Cortex-A76
A-Core 3.30 GHz (3.60 GHz)
2.00 GHz
6x Cortex-A55
B-Core --

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.

MediaTek Dimensity 800U Characteristic Intel Core i7-5820K
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

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.

ARM Mali-G57 MP3 GPU no iGPU
0.95 GHz GPU frequency --
-- GPU (Turbo) --
Vallhall 1 GPU Generation --
7 nm Technology
2 Max. displays
3 Compute units --
48 Shader --
No Hardware Raytracing No
No Frame Generation No
4 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.

ARM Mali-G57 MP3 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode / Encode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

Up to 12 GB of memory in a maximum of 2 memory channels is supported by the MediaTek Dimensity 800U, while the Intel Core i7-5820K supports a maximum of 64 GB of memory with a maximum memory bandwidth of 68.2 GB/s enabled.

MediaTek Dimensity 800U Characteristic Intel Core i7-5820K
LPDDR4X-4266 Memory DDR4-2133
12 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 4 (Quad Channel)
17.1 GB/s Max. Bandwidth 68.2 GB/s
No ECC No
-- L2 Cache --
-- L3 Cache 15.00 MB
-- PCIe version 3.0
-- PCIe lanes 28
-- PCIe Bandwidth 27.6 GB/s

Thermal Management

The MediaTek Dimensity 800U has a TDP of --. The TDP of the Intel Core i7-5820K is 140 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

MediaTek Dimensity 800U Characteristic Intel Core i7-5820K
-- TDP (PL1 / PBP) 140 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The MediaTek Dimensity 800U has 0.00 MB cache and is manufactured in 7 nm. The cache of Intel Core i7-5820K is at 15.00 MB. The processor is manufactured in 22 nm.

MediaTek Dimensity 800U Characteristic Intel Core i7-5820K
7 nm Technology 22 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4.1, SSE4.2, AVX2
-- Socket LGA 2011-3
None Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Android Operating systems Windows 10, Linux
Q3/2020 Release date Q3/2014
-- Release price 499 $
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
MediaTek Dimensity 800U (67%)
Intel Core i7-5820K (100%)
⌀ Multi core performance in 3 CPU benchmarks
MediaTek Dimensity 800U (34%)
Intel Core i7-5820K (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
593 (64%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.60 GHz
923 (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
1783 (32%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
5537 (100%)

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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
753 (69%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.60 GHz
1086 (100%)

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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
1882 (33%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
5763 (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
3621 (37%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
9854 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.60 GHz
795 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
5700 (100%)

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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.60 GHz
329 (100%)

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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
2301 (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
ARM Mali-G57 MP3 @ 0.95 GHz
365 (100%)
Intel Core i7-5820K Intel Core i7-5820K
@ 0.00 GHz
0 (0%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
368465 (100%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.30 GHz
0 (0%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
334689 (100%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.30 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
88 (100%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
331.7 (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.30 GHz
2849 (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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.60 GHz
139 (100%)

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.
MediaTek Dimensity 800U MediaTek Dimensity 800U
8C 8T @ 2.40 GHz
0 (0%)
Intel Core i7-5820K Intel Core i7-5820K
6C 12T @ 3.40 GHz
1085 (100%)

Devices using this processor

MediaTek Dimensity 800U Intel Core i7-5820K
Unknown Unknown

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