Intel Atom x5-Z8500 vs Intel Core i5-4258U. Specifications, performance, tests

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

• Segment
  Mobile Mobile
• Family
  Intel Atom Intel Core i5
• Generation
  1 4
• CPU group
  Intel Atom x3/x5/x7 Intel Core i 4000U

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
  1.44 GHz 2.40 GHz
• CPU Cores
  4 2
• Turbo (1 Core)
  2.24 GHz 2.90 GHz
• CPU Threads
  4 4
• Hyperthreading
  No Yes
• Overclocking
  No No
• Core architecture
  normal normal

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 400 Intel Iris Graphics 5100
• GPU frequency
  0.20 GHz 0.20 GHz
• GPU (Turbo)
  0.60 GHz 1.10 GHz
• Execution units
  12 40
• Shader
  96 320
• Max. GPU Memory
  8 GB 2 GB
• Max. displays
  3 3
• Generation
  8 7.5
• DirectX Version
  12 11.1
• Technology
  14 nm 22 nm
• Release date
  Q1/2015 Q2/2013

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 No
• AV1
  No No
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode Decode

Types, channel quantity of RAM supported by Intel Core i5-4258U and Intel Atom x5-Z8500. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR3L-1600 SO-DIMM DDR3L-1600 SO-DIMM
• ECC
  No No
• Memory channels
  2 2
• PCIe version
  2.0 2.0
• PCIe lanes
  2 12

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Atom x5-Z8500 and Intel Core i5-4258U to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  2 W 28 W

Architecture, interfaces, additional instructions supported by Intel Atom x5-Z8500 and Intel Atom x5-Z8500, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  VT-x, VT-x EPT VT-x, VT-x EPT, VT-d
• ISA extensions
  SSE4.1, SSE4.2 SSE4.1, SSE4.2, AVX2
• L3-Cache
  2.00 MB 3.00 MB
• Architecture
  Cherry Trail Haswell U
• Technology
  14 nm 22 nm
• Socket
  BGA 138 BGA 1168
• Release date
  Q2/2015 Q3/2013