AMD Ryzen 9 3900X vs Intel Core i9-12900T. Specifications, performance, tests

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

• CPU group
  AMD Ryzen 3000 Intel Core i 12000
• Family
  Ryzen Intel Core i9
• Form Factor
  Desktops / Boxed Processor -
• Generation
  3 12
• Predecessor
  - Intel Core i9-11900KF
• Segment
  Desktop / Server Desktop / Server
• Series
  Ryzen 3000 Series -
• Successor
  AMD Ryzen 9 5900X -

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

• Base Frequency
  3.8 GHz 2.4 GHz
• Core architecture
  normal hybrid (big.LITTLE)
• Core Configuration
  12x -
• CPU Cores
  12 16
• CPU Threads
  24 24
• Hyperthreading / SMT
  Yes Yes
• Max. Boost Clock
  4.6 GHz -
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  4.6 GHz 5.3 GHz
• Turbo Frequency (12 Cores)
  4.2 GHz -
• A-Core
  - 8x Golden Cove
• B-Core
  - 8x Gracemont
• Turbo Frequency (16 Cores)
  - 3.4 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 UHD Graphics 770
• DirectX Version
  - 12
• Execution units
  - 32
• Generation
  - 11
• GPU Frequency
  - 350 MHz
• GPU Turbo
  - 1450 MHz
• Max. displays
  - 3
• Release date
  - Q4/2021
• Shader
  - 256
• 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 / Encode
• VP9
  No Decode / Encode

Types, channel quantity of RAM supported by Intel Core i9-12900T and AMD Ryzen 9 3900X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  Yes No
• Max. Memory
  128 GB 256 GB
• Memory Bandwidth
  51.2 GB/s -
• Memory channels
  2 2
• Memory type
  DDR4 DDR4-3200DDR5-4800
• PCIe
  PCIe 4.0 x16 -
• System Memory Specification
  3200 -
• PCIe lanes
  - 20
• PCIe version
  - 5.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 9 3900X and Intel Core i9-12900T Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Default TDP
  105 W -
• Maximum Operating Temperature
  95 °C 100 °C
• TDP (PL1, legacy label)
  105 W 35 W
• TDP (PL2)
  142 W -

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 3900X and Intel Core i9-12900T, virtual machine technologies and process technology.

• Architecture
  Matisse (Zen 2) Alder Lake S
• Codename
  Matisse -
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 SSE4.1, SSE4.2, AVX2, AVX2+
• L1-Cache
  0.75 MB -
• L2-Cache
  6 MB 3.75 MB
• L3-Cache
  64 MB 30 MB
• Manufacturer product ID (boxed)
  100-100000023BOX -
• Manufacturer product ID (MPK)
  100-100000023MPK -
• Manufacturer product ID (tray)
  100-000000023 -
• Operating systems
  Windows 10 - 64-Bit Edition / RHEL x86 64-Bit / Ubuntu x86 64-Bit -
• Part Number
  - BX8071512900KF
• Release date
  2019-07-07 Q4/2021
• Socket
  AM4 LGA 1700
• Technology
  TSMC 7nm FinFET 10 nm
• Virtualization
  AMD-V, SVM VT-x, VT-x EPT, VT-d