AMD Ryzen 7 7800X3D vs AMD Ryzen 9 7900. Specifications, performance, tests

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

• Family
  AMD Ryzen 7 AMD Ryzen 9
• CPU group
  AMD Ryzen 7000 AMD Ryzen 7000
• Segment
  Desktop / Server Desktop / Server
• Generation
  6 6
• Predecessor
  AMD Ryzen 7 5800X3D AMD Ryzen 9 5900

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
  8 / 16 12 / 24
• Core architecture
  normal normal
• Cores
  8x 12x
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes Yes
• Frequency
  4.70 GHz 3.80 GHz
• Turbo Frequency (1 Core)
  5.60 GHz 5.40 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
  AMD Radeon Graphics (Raphael) AMD Radeon Graphics (Raphael)
• GPU frequency
  0.40 GHz 0.40 GHz
• GPU (Turbo)
  2.20 GHz 2.20 GHz
• Execution units
  2 2
• Shader
  128 128
• Max. GPU Memory
  8 GB 8 GB
• Max. displays
  3 3
• Generation
  9 9
• Direct X
  12 12
• Technology
  5 nm 5 nm
• Release date
  Q3/2022 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 / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode
• AV1
  No No
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode / Encode Decode / Encode

Types, channel quantity of RAM supported by AMD Ryzen 9 7900 and AMD Ryzen 7 7800X3D. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR5-5200 DDR5-5200
• Max. Memory
  128 GB 128 GB
• Memory channels
  2 (Dual Channel) 2 (Dual Channel)
• Bandwidth
  83.2 GB/s 83.2 GB/s
• ECC
  Yes Yes
• PCIe
  5.0 x 24 5.0 x 24
• AES-NI
  Yes Yes

Compare the TDP requirements of TDP AMD Ryzen 7 7800X3D and AMD Ryzen 9 7900 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  170 W 65 W
• TDP (PL2)
  230 W --
• Tjunction max.
  95 °C 95 °C

Architecture, interfaces, additional instructions supported by AMD Ryzen 7 7800X3D and AMD Ryzen 7 7800X3D, virtual machine technologies and process technology.

• Technology
  5 nm 5 nm
• Chip design
  Chiplet Chiplet
• Socket
  AM5 (LGA 1718) AM5 (LGA 1718)
• L2-Cache
  8.00 MB 12.00 MB
• L3-Cache
  96.00 MB 64.00 MB
• Architecture
  Raphael (Zen 4) Raphael (Zen 4)
• Operating systems
  Windows 10, Windows 11, Linux Windows 10, Windows 11, Linux
• Virtualization
  AMD-V, SVM AMD-V, SVM
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
• Release date
  Q1/2023 Q1/2023
• Release price
  -- 429 $