AMD FX-4300 vs AMD Phenom II X4 955. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  AMD FX AMD Phenom II
• Generation
  2 4
• CPU group
  AMD FX-4300 AMD Phenom II - 800/900

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.

• Frequency
  3.80 GHz 3.20 GHz
• CPU Cores
  4 4
• Turbo (1 Core)
  No turbo No turbo
• CPU Threads
  4 4
• Turbo (4 Cores)
  No turbo No turbo
• Hyperthreading
  No No
• Overclocking
  Yes Yes
• Core architecture
  normal normal

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
  no iGPU no iGPU
• GPU (Turbo)
  No turbo No turbo

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

• h265 / HEVC (8 bit)
  No No
• h265 / HEVC (10 bit)
  No No
• h264
  No No
• VP9
  No No
• VP8
  No No
• AV1
  No No
• AVC
  No No
• VC-1
  No No
• JPEG
  No No

Types, channel quantity of RAM supported by AMD Phenom II X4 955 and AMD FX-4300. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR3-1866 DDR2-1066
• ECC
  Yes No
• Memory channels
  2 2

• AES-NI
  Yes No

Compare the TDP requirements of TDP AMD FX-4300 and AMD Phenom II X4 955 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  95 W 125 W

Architecture, interfaces, additional instructions supported by AMD FX-4300 and AMD FX-4300, virtual machine technologies and process technology.

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  AMD-V AMD-V
• ISA extensions
  SSE4.1, SSE4.2, AVX, FMA3, FMA4 SSE3, SSE4a
• L3-Cache
  4.00 MB 6.00 MB
• Architecture
  Vishera (Bulldozer) Deneb (K10)
• Technology
  32 nm 45 nm
• Socket
  AM3+ AM3
• Release date
  Q4/2012 Q2/2009