AMD Phenom II X4 B99 vs AMD Phenom II X4 955. Specifications, performance, tests

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

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

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

• Base Frequency
  3.3 GHz 3.2 GHz
• Core architecture
  normal normal
• CPU Cores
  4 4
• CPU Threads
  4 4
• Hyperthreading / SMT
  No No
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  No turbo No turbo
• Turbo Frequency (4 Cores)
  No turbo No turbo

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.

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

Types, channel quantity of RAM supported by AMD Phenom II X4 955 and AMD Phenom II X4 B99. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Memory channels
  2 2
• Memory type
  DDR2-1066 DDR2-1066

• AES-NI
  No No

Compare the TDP requirements of TDP AMD Phenom II X4 B99 and AMD Phenom II X4 955 Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• TDP (PL1, legacy label)
  95 W 125 W

Architecture, interfaces, additional instructions supported by AMD Phenom II X4 B99 and AMD Phenom II X4 955, virtual machine technologies and process technology.

• Architecture
  Deneb (K10) Deneb (K10)
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE3, SSE4a SSE3, SSE4a
• L3-Cache
  6.00 MB 6.00 MB
• Release date
  Q2/2010 Q2/2009
• Socket
  AM3 AM3
• Technology
  45 nm 45 nm
• Virtualization
  AMD-V AMD-V