Intel Core i9-10900KF vs Intel Core i7-1255U. Specifications, performance, tests

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

• CPU group
  Intel Core i 10000 Intel Core i 1200P/1200U
• Family
  Intel Core i9 Intel Core i7
• Generation
  10 12
• Predecessor
  Intel Core i9-9900KF -
• Segment
  Desktop / Server Mobile
• Successor
  Intel Core i9-11900KF -

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

• A-Core
  - 2x Golden Cove
• B-Core
  - 8x Gracemont
• Base Frequency
  3.7 GHz 1.7 GHz
• Core architecture
  normal hybrid (big.LITTLE)
• CPU Cores
  10 10
• CPU Threads
  20 12
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes No
• Turbo Frequency (1 Core)
  5.3 GHz 4.7 GHz
• Turbo Frequency (10 Cores)
  4.9 GHz 2.7 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.

• GPU name
  None Intel Iris Xe Graphics 96 (Alder Lake)
• DirectX Version
  - 12.1
• Execution units
  - 96
• Generation
  - 13
• GPU Frequency
  - 350 MHz
• GPU Turbo
  - 1250 MHz
• Max. displays
  - 4
• Max. GPU Memory
  - 64 GB
• Release date
  - Q1/2022
• Shader
  - 768
• Technology
  - 10 nm

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

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

Types, channel quantity of RAM supported by Intel Core i7-1255U and Intel Core i9-10900KF. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Max. Memory
  128 GB 64 GB
• Memory channels
  2 2
• Memory type
  DDR4-2933 DDR4-3200DDR5-4800LPDDR4X-4266LPDDR5-5200
• PCIe lanes
  16 -
• PCIe version
  3.0 -
• PCIe
  - 4.0 x 28

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i9-10900KF and Intel Core i7-1255U Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Maximum Operating Temperature
  100 °C 100 °C
• TDP (PL1, legacy label)
  125 W 15 W
• TDP (PL2)
  - 55 W
• TDP down
  95 W -

Architecture, interfaces, additional instructions supported by Intel Core i9-10900KF and Intel Core i7-1255U, virtual machine technologies and process technology.

• Architecture
  Comet Lake S Alder 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
• L2-Cache
  - 6.5 MB
• L3-Cache
  20 MB 12 MB
• Release date
  Q2/2020 Q1/2022
• Socket
  LGA 1200 BGA 1744
• Technology
  14 nm 10 nm
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT, VT-d