Intel Core i9-12900H vs AMD Ryzen 9 7945HX. Specifications, performance, tests

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

• Family
  Intel Core i9 AMD Ryzen 9
• CPU group
  Intel Core i 12000H AMD Ryzen 7045
• Segment
  Mobile Mobile
• Generation
  12 6
• Predecessor
  Intel Core i9-11900H --

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
  14 / 20 16 / 32
• Core architecture
  hybrid (big.LITTLE) normal
• Frequency
  2.50 GHz 2.50 GHz
• Overclocking
  No Yes

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 96 (Alder Lake) AMD Radeon 610M Graphics
• GPU frequency
  0.40 GHz 0.40 GHz
• GPU (Turbo)
  1.45 GHz 2.20 GHz
• Execution units
  96 2
• Shader
  768 128
• Max. GPU Memory
  64 GB 8 GB
• Max. displays
  4 3
• Generation
  13 9
• Direct X
  12.1 12
• Technology
  10 nm 6 nm
• Release date
  Q1/2022 Q3/2022

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 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 AMD Ryzen 9 7945HX and Intel Core i9-12900H. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR4-3200DDR5-4800LPDDR4X-4266LPDDR5-5200 DDR5-5200
• Max. Memory
  64 GB 128 GB
• Memory channels
  2 2 (Dual Channel)
• ECC
  No Yes
• PCIe
  4.0 x 28 5.0 x 28
• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i9-12900H and AMD Ryzen 9 7945HX to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL2)
  115 W --
• TDP up
  -- 75 W
• Tjunction max.
  100 °C 100 °C

Architecture, interfaces, additional instructions supported by Intel Core i9-12900H and Intel Core i9-12900H, 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+ SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
• L2-Cache
  11.50 MB 16.00 MB
• L3-Cache
  24.00 MB 64.00 MB
• Architecture
  Alder Lake H Dragon Range (Zen 4)
• Technology
  10 nm 5 nm
• Virtualization
  VT-x, VT-x EPT, VT-d AMD-V, SVM
• Socket
  BGA 1744 FL1
• Release date
  Q1/2022 Q1/2023
• Part Number
  -- 100-000000870