HiSilicon Kirin 990 4G vs HiSilicon Kirin 820 5G. Specifications, performance, tests

Background information about the processors being compared, series, generation and market segment.

• Segment
  Mobile Mobile
• Family
  HiSilicon Kirin HiSilicon Kirin
• Generation
  8 6
• CPU group
  HiSilicon Kirin 990 HiSilicon Kirin 810/820

Basic parameters such as number of cores, number of threads, base and turbo frequency, and cache size. These parameters indirectly tell about the speed of the processor, the higher they are the better.

• Frequency
  1.86 GHz 1.84 GHz
• CPU Cores
  8 8
• Turbo (1 Core)
  2.09 GHz 2.36 GHz
• CPU Threads
  8 8
• Turbo (8 Cores)
  2.86 GHz 2.36 GHz
• Hyperthreading
  No No
• Overclocking
  No No
• Core architecture
  hybrid (Prime / big.LITTLE) hybrid (big.LITTLE)
• A core
  2x Cortex-A76 4x Cortex-A76
• B core
  2x Cortex-A76 4x Cortex-A55
• C core
  4x Cortex-A55 --

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

• GPU name
  ARM Mali-G76 MP16 ARM Mali-G57 MP6
• GPU frequency
  0.60 GHz 0.85 GHz
• GPU (Turbo)
  No turbo No turbo
• Execution units
  16 6
• Shader
  256 96
• Max. GPU Memory
  4 GB 4 GB
• Max. displays
  2 2
• Generation
  Bifrost 3 Vallhall 1
• DirectX Version
  12 12
• Technology
  7 nm 7 nm
• Release date
  Q3/2018 Q2/2020

Built-in codecs used to encode and decode content. Significantly speeds up the required operations.

• h265 / HEVC (8 bit)
  Decode / Encode Decode / Encode
• h265 / HEVC (10 bit)
  Decode / Encode Decode / Encode
• h264
  Decode / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode
• VP8
  Decode / Encode Decode / Encode
• AV1
  No Decode
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode / Encode Decode / Encode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by HiSilicon Kirin 820 5G and HiSilicon Kirin 990 4G. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  LPDDR4X-2133 LPDDR4X-2133
• Max. Memory
  8 GB
• ECC
  No No
• Memory channels
  4 4

• AES-NI
  No No

Compare the TDP requirements of TDP HiSilicon Kirin 990 4G and HiSilicon Kirin 820 5G to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  6 W 6 W

Architecture, interfaces, additional instructions supported by HiSilicon Kirin 990 4G and HiSilicon Kirin 990 4G, virtual machine technologies and process technology.

• Instruction set (ISA)
  ARMv8-A64 (64 bit) ARMv8-A64 (64 bit)
• Virtualization
  None None
• L3-Cache
  2.00 MB 2.00 MB
• Architecture
  Cortex-A76 / Cortex-A55 Cortex-A76 / Cortex-A55
• Technology
  7 nm 7 nm
• Socket
  N/A N/A
• Release date
  Q3/2019 Q2/2019