Intel Core i5-1155G7 vs Intel Core i5-8400. Specifications, performance, tests

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

• Segment
  Mobile Desktop / Server
• Family
  Intel Core i5 Intel Core i5
• Generation
  11 8
• CPU group
  Intel Core i 1100G/11000U Intel Core i 8000
• Predecessor
  -- Intel Core i5-7400
• Successor
  -- Intel Core i5-9400

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
  2.50 GHz 2.80 GHz
• CPU Cores
  4 6
• Turbo (1 Core)
  4.40 GHz 4.00 GHz
• CPU Threads
  8 6
• Hyperthreading
  Yes No
• 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 Iris Xe Graphics 80 (Tiger Lake G7) Intel UHD Graphics 630
• GPU frequency
  0.40 GHz 0.35 GHz
• GPU (Turbo)
  1.35 GHz 1.15 GHz
• Execution units
  80 24
• Shader
  640 192
• Max. GPU Memory
  16 GB 64 GB
• Max. displays
  4 3
• Generation
  12 9.5
• DirectX Version
  12 12
• Technology
  10 nm 14 nm
• Release date
  Q3/2020 Q4/2017

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

Types, channel quantity of RAM supported by Intel Core i5-8400 and Intel Core i5-1155G7. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-3200LPDDR4X-4266 DDR4-2666
• Max. Memory
  64 GB 128 GB
• ECC
  No No
• Memory channels
  2 2
• PCIe version
  4.0 3.0
• PCIe lanes
  4 16

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i5-1155G7 and Intel Core i5-8400 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  15 W 65 W
• TDP up
  28 W --
• TDP down
  12 W --
• Tjunction max.
  100 °C --

Architecture, interfaces, additional instructions supported by Intel Core i5-1155G7 and Intel Core i5-1155G7, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT, VT-d
• ISA extensions
  SSE4.1, SSE4.2, AVX2, AVX-512 SSE4.1, SSE4.2, AVX2
• L3-Cache
  8.00 MB 9.00 MB
• Architecture
  Tiger Lake U Coffee Lake S
• Technology
  10 nm 14 nm
• Socket
  BGA 1526 LGA 1151-2
• Release date
  Q2/2021 Q4/2017