MediaTek Dimensity 800 vs AMD EPYC 7643

Last updated:

CPU comparison with benchmarks


MediaTek Dimensity 800 CPU1 vs CPU2 AMD EPYC 7643
MediaTek Dimensity 800 AMD EPYC 7643

CPU comparison

MediaTek Dimensity 800 or AMD EPYC 7643 - 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 MediaTek Dimensity 800 has 8 cores with 8 threads and clocks with a maximum frequency of 2.00 GHz. Up to GB of memory is supported in 2 memory channels. The MediaTek Dimensity 800 was released in Q2/2020.

The AMD EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. The CPU supports up to 4096 GB of memory in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021.
Mediatek Dimensity (36) Family AMD EPYC (129)
MediaTek Dimensity 700/720/800 (4) CPU group AMD EPYC 7003 (29)
1 Generation 3
Cortex-A76 / Cortex-A55 Architecture Milan (Zen 3)
Mobile Segment Desktop / Server
-- Predecessor AMD EPYC 7642
-- Successor --

CPU Cores and Base Frequency

The MediaTek Dimensity 800 has 8 CPU cores and can calculate 8 threads in parallel. The clock frequency of the MediaTek Dimensity 800 is 2.00 GHz while the AMD EPYC 7643 has 48 CPU cores and 96 threads can calculate simultaneously. The clock frequency of the AMD EPYC 7643 is at 2.30 GHz (3.60 GHz).

MediaTek Dimensity 800 Characteristic AMD EPYC 7643
8 Cores 48
8 Threads 96
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.00 GHz
4x Cortex-A76
A-Core 2.30 GHz (3.60 GHz)
48x Zen 3
2.00 GHz
4x Cortex-A55
B-Core --

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.

MediaTek Dimensity 800 Characteristic AMD EPYC 7643
-- AI hardware --
-- AI specifications --

Internal Graphics

The MediaTek Dimensity 800 or AMD EPYC 7643 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-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

The MediaTek Dimensity 800 can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 17.1 GB/s. The AMD EPYC 7643 supports up to 4096 GB of memory in 8 memory channels and achieves a memory bandwidth of up to 204.8 GB/s.

MediaTek Dimensity 800 Characteristic AMD EPYC 7643
LPDDR4X-4266 Memory DDR4-3200
Max. Memory 4096 GB
2 (Dual Channel) Memory channels 8 (Octa Channel)
17.1 GB/s Max. Bandwidth 204.8 GB/s
No ECC Yes
-- L2 Cache --
-- L3 Cache 256.00 MB
-- PCIe version 4.0
-- PCIe lanes 128
-- PCIe Bandwidth 252.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the MediaTek Dimensity 800 is --, while the AMD EPYC 7643 has a TDP of 240 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

MediaTek Dimensity 800 Characteristic AMD EPYC 7643
-- TDP (PL1 / PBP) 240 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 225 W
-- Tjunction max. --

Technical details

The MediaTek Dimensity 800 is manufactured in 7 nm and has 0.00 MB cache. The AMD EPYC 7643 is manufactured in 7 nm and has a 256.00 MB cache.

MediaTek Dimensity 800 Characteristic AMD EPYC 7643
7 nm Technology 7 nm
Chiplet Chip design Chiplet
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
-- Socket SP3
None Virtualization AMD-V, SVM
No AES-NI Yes
Android Operating systems Windows 10, Linux
Q2/2020 Release date Q1/2021
-- Release price 4995 $
show more data show more data


Rate these processors

Here you can rate the MediaTek Dimensity 800 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the AMD EPYC 7643 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
MediaTek Dimensity 800 (39%)
AMD EPYC 7643 (100%)
⌀ Multi core performance in 3 CPU benchmarks
MediaTek Dimensity 800 (9%)
AMD EPYC 7643 (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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
497 (38%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.60 GHz
1319 (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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
2176 (6%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
36850 (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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
675 (40%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.60 GHz
1671 (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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
2280 (15%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
14987 (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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
4051 (5%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
76440 (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 800 MediaTek Dimensity 800
ARM Mali-G57 MP3 @ 0.95 GHz
365 (100%)
AMD EPYC 7643 AMD EPYC 7643
@ 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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
352340 (100%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 2.30 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 800 MediaTek Dimensity 800
8C 8T @ 2.00 GHz
308468 (100%)
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 2.30 GHz
0 (0%)

Devices using this processor

MediaTek Dimensity 800 AMD EPYC 7643
Unknown Unknown

Popular comparisons containing this CPUs

1. AMD EPYC 7642AMD EPYC 7643 AMD EPYC 7642 vs AMD EPYC 7643
2. Qualcomm Snapdragon 480 5GMediaTek Dimensity 800 Qualcomm Snapdragon 480 5G vs MediaTek Dimensity 800
3. MediaTek Dimensity 800MediaTek Helio G96 MediaTek Dimensity 800 vs MediaTek Helio G96
4. MediaTek Helio G95MediaTek Dimensity 800 MediaTek Helio G95 vs MediaTek Dimensity 800
5. MediaTek Dimensity 800MediaTek Dimensity 800U MediaTek Dimensity 800 vs MediaTek Dimensity 800U
6. AMD EPYC 7643Intel Pentium Gold G6605 AMD EPYC 7643 vs Intel Pentium Gold G6605
7. Intel Core i7-6500UAMD EPYC 7643 Intel Core i7-6500U vs AMD EPYC 7643
8. AMD EPYC 7643Apple A11 Bionic AMD EPYC 7643 vs Apple A11 Bionic
9. AMD Ryzen 5 2600AMD EPYC 7643 AMD Ryzen 5 2600 vs AMD EPYC 7643
10. AMD EPYC 7643AMD Ryzen Embedded V2748 AMD EPYC 7643 vs AMD Ryzen Embedded V2748


back to index