Intel Core i9-12900KS vs Intel Core i5-12400T. Specifications, performance, tests

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

• Family
  Intel Core i9 Intel Core i5
• CPU group
  Intel Core i 12000 Intel Core i 12000
• Segment
  Desktop / Server Desktop / Server
• Generation
  12 12
• Predecessor
  -- Intel Core i5-11400T

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.

• CPU Cores / Threads
  16 / 24 6 / 12
• Core architecture
  hybrid (big.LITTLE) normal
• A-Core
  8x Golden Cove 6x Golden Cove
• B-Core
  8x Gracemont --
• Frequency
  3.20 GHz 1.80 GHz
• Turbo (1 Core)
  5.50 GHz 4.20 GHz
• Hyperthreading
  Yes Yes
• Overclocking
  Yes No

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 UHD Graphics 770 Intel UHD Graphics 770
• GPU frequency
  0.30 GHz 0.30 GHz
• GPU (Turbo)
  1.45 GHz 1.45 GHz
• Execution units
  32 32
• Shader
  256 256
• Max. displays
  3 3
• Generation
  11 11
• Direct X
  12 12
• Technology
  10 nm 10 nm
• Release date
  Q4/2021 Q4/2021

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
• VP8
  Decode / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode
• AV1
  Decode Decode
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by Intel Core i5-12400T and Intel Core i9-12900KS. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-3200DDR5-4800 DDR4-3200DDR5-4800
• Max. Memory
  128 GB 128 GB
• Memory channels
  2 2
• ECC
  No No
• PCIe
  5.0 x 20 5.0 x 20
• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i9-12900KS and Intel Core i5-12400T to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  125 W 35 W
• TDP (PL2)
  241 W 74 W
• Tjunction max.
  100 °C 100 °C

Architecture, interfaces, additional instructions supported by Intel Core i9-12900KS and Intel Core i9-12900KS, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4.1, SSE4.2, AVX2, AVX2+ SSE4.1, SSE4.2, AVX2, AVX2+
• L2-Cache
  14.00 MB 7.50 MB
• L3-Cache
  30.00 MB 18.00 MB
• Architecture
  Alder Lake S Alder Lake S
• Technology
  10 nm 10 nm
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT, VT-d
• Socket
  LGA 1700 LGA 1700
• Release date
  Q2/2022 Q1/2022
• Part Number
  BX8071512900K --