Intel Core i7-8557U vs Intel Core i7-8559U. Specifications, performance, tests

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

• CPU group
  Intel Core i 8000U Intel Core i 8000U
• Family
  Intel Core i7 Intel Core i7
• Generation
  8 8
• Segment
  Mobile Mobile

Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.

• Base Frequency
  1.7 GHz 2.7 GHz
• Core architecture
  normal normal
• CPU Cores
  4 4
• CPU Threads
  8 8
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  No No
• Turbo Frequency (1 Core)
  4.5 GHz 4.5 GHz
• Turbo Frequency (4 Cores)
  3.4 GHz 3.2 GHz

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

• DirectX Version
  12 12
• Execution units
  48 48
• Generation
  9.5 9.5
• GPU Frequency
  300 MHz 300 MHz
• GPU name
  Intel Iris Plus Graphics 645 Intel Iris Plus Graphics 655
• GPU Turbo
  1150 MHz 1200 MHz
• Max. displays
  3 3
• Max. GPU Memory
  32 GB 32 GB
• Release date
  Q4/2017 Q4/2017
• Shader
  384 384
• Technology
  14 nm 14 nm

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

• AV1
  No No
• H.264 / AVC
  Decode / Encode Decode / Encode
• h265 / HEVC (8 bit)
  Decode / Encode Decode / Encode
• h265 / HEVC (10 bit)
  Decode / Encode Decode / Encode
• JPEG
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• VP8
  Decode / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by Intel Core i7-8559U and Intel Core i7-8557U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Max. Memory
  - 32 GB
• Memory channels
  2 2
• Memory type
  DDR4-2400 SO-DIMMLPDDR3-2133 DDR4-2400 SO-DIMM
• PCIe lanes
  16 16
• PCIe version
  3.0 3.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i7-8557U and Intel Core i7-8559U Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• TDP (PL1, legacy label)
  15 W 28 W

Architecture, interfaces, additional instructions supported by Intel Core i7-8557U and Intel Core i7-8559U, virtual machine technologies and process technology.

• Architecture
  Coffee Lake U Coffee Lake U
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4.1, SSE4.2, AVX2 SSE4.1, SSE4.2, AVX2
• L3-Cache
  8.00 MB 6.00 MB
• Release date
  Q3/2019 Q2/2018
• Socket
  BGA 1528 BGA 1528
• Technology
  14 nm 14 nm
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT, VT-d