Intel Atom x7-Z8700 vs HiSilicon Kirin 925. Specifications, performance, tests

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

• Segment
  Mobile Mobile
• Family
  Intel Atom HiSilicon Kirin
• Generation
  1 2
• CPU group
  Intel Atom x3/x5/x7 HiSilicon Kirin 920

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
  1.60 GHz 1.30 GHz
• CPU Cores
  4 8
• Turbo (1 Core)
  2.40 GHz 1.80 GHz
• CPU Threads
  4 8
• Hyperthreading
  No No
• Overclocking
  No No
• Core architecture
  normal hybrid (big.LITTLE)
• A core
  -- 4x Cortex-A15
• B core
  -- 4x Cortex-A7

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
  Intel HD Graphics 405 (16EU) ARM Mali-T628 MP4
• GPU frequency
  0.20 GHz 0.60 GHz
• GPU (Turbo)
  0.60 GHz 0.60 GHz
• Execution units
  16 4
• Shader
  128 64
• Max. GPU Memory
  8 GB --
• Max. displays
  3 1
• Generation
  8 Midgard 2
• DirectX Version
  12 11
• Technology
  14 nm 32nm
• Release date
  Q2/2015 Q4/2012

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

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

Types, channel quantity of RAM supported by HiSilicon Kirin 925 and Intel Atom x7-Z8700. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  LPDDR3-1600 LPDDR3-1600
• ECC
  No No
• Memory channels
  2 2
• PCIe version
  2.0
• PCIe lanes
  2

• AES-NI
  Yes No

Compare the TDP requirements of TDP Intel Atom x7-Z8700 and HiSilicon Kirin 925 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  2 W

Architecture, interfaces, additional instructions supported by Intel Atom x7-Z8700 and Intel Atom x7-Z8700, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) ARMv7-A32 (32 bit)
• Virtualization
  VT-x, VT-x EPT None
• ISA extensions
  SSE4.1, SSE4.2
• L3-Cache
  2.00 MB --
• Architecture
  Cherry Trail Cortex-A15 / Cortex-A7
• Technology
  14 nm 28 nm
• Socket
  BGA 138 N/A
• Release date
  Q1/2015 Q3/2014