Intel Core Ultra 7 251HX vs AMD Ryzen 7 4800H. Specifications, performance, tests

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

• Family
  Intel Core Ultra Series 2 Ryzen
• Segment
  Mobile Mobile
• CPU group
  - AMD Ryzen 4000H
• Form Factor
  - Laptops / Desktops
• Generation
  - 3
• Series
  - Ryzen 4000 Series

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

• CPU Cores
  18 8
• CPU Threads
  18 16
• E-core Base Clock
  2.5 GHz -
• Efficient Cores
  12 -
• Low Power Efficient-cores
  0 -
• Max. Boost Clock
  5.1 GHz 4.2 GHz
• P-core Base Clock
  2.9 GHz -
• Performance Cores
  6 -
• Base Frequency
  - 2.9 GHz
• Core architecture
  - normal
• Hyperthreading / SMT
  - Yes
• Overclocking
  - No
• Turbo Frequency (1 Core)
  - 4.2 GHz
• Turbo Frequency (8 Cores)
  - 3.8 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 Turbo
  1800 MHz No turbo
• DirectX Version
  - 12
• Execution units
  - 7
• Generation
  - 9
• GPU Frequency
  - 1600 MHz
• GPU name
  - AMD Radeon Graphics
• Graphics Cores
  - 7
• Max. displays
  - 3
• Max. GPU Memory
  - 2 GB
• Release date
  - Q1/2020
• Shader
  - 448
• Technology
  - 7 nm

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

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

Types, channel quantity of RAM supported by AMD Ryzen 7 4800H and Intel Core Ultra 7 251HX. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Max. Memory
  256 GB 32 GB
• Memory channels
  2 2
• Memory type
  Up to DDR5 6400 MT/s DDR4 - Up to 3200 / LPDDR4 - Up to 4266
• ECC
  - Yes
• PCIe
  - PCIe 3.0
• PCIe lanes
  - 12
• PCIe version
  - 3.0

• AES-NI
  - Yes

Compare the TDP requirements of TDP Intel Core Ultra 7 251HX and AMD Ryzen 7 4800H Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Maximum Turbo Power
  160 W -
• TDP (PL1 / PBP, legacy combined label)
  55 W -
• Configurable TDP
  - 35-54 W
• Default TDP
  - 45 W
• Maximum Operating Temperature
  - 105 °C
• TDP (PL1, legacy label)
  - 45 W
• TDP down
  - 35 W
• TDP up
  - 54 W

Architecture, interfaces, additional instructions supported by Intel Core Ultra 7 251HX and AMD Ryzen 7 4800H, virtual machine technologies and process technology.

• L3-Cache
  30 MB 8 MB
• Release date
  Q1/2026 2020-01-06
• Socket
  FCBGA2114 FP6
• Architecture
  - Renoir (Zen 2)
• Codename
  - Renoir
• Instruction set (ISA)
  - x86-64 (64 bit)
• ISA extensions
  - SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
• L2-Cache
  - 4 MB
• Manufacturer product ID (tray)
  - 100-000000098
• Operating systems
  - Windows 11 - 64-Bit Edition / Windows 10 - 64-Bit Edition / RHEL x86 64-Bit / Ubuntu x86 64-Bit
• Technology
  - TSMC 7nm FinFET
• Virtualization
  - AMD-V, SVM