Intel Core i7-3960X vs Intel Xeon E3-1275 v3. Specifications, performance, tests

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

• CPU group
  Intel Core i 3000X Intel Xeon E3 v3
• Family
  Intel Core i7 Extreme Edition Intel Xeon E3
• Generation
  3 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 3.5 GHz
• Core architecture
  normal normal
• CPU Cores
  6 4
• CPU Threads
  12 8
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes No
• Turbo Frequency (1 Core)
  3.9 GHz 3.9 GHz
• Turbo Frequency (6 Cores)
  3.9 GHz -
• Turbo Frequency (4 Cores)
  - 3.9 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.

• DirectX Version
  - 11.1
• Execution units
  - 20
• Generation
  - 7.5
• GPU Frequency
  - 350 MHz
• GPU name
  no iGPU Intel HD Graphics P4600
• GPU Turbo
  No turbo 1250 MHz
• Max. displays
  - 3
• Max. GPU Memory
  - 2 GB
• Release date
  - Q2/2013
• Shader
  - 160
• Technology
  - 22 nm

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

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

Types, channel quantity of RAM supported by Intel Xeon E3-1275 v3 and Intel Core i7-3960X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No Yes
• Memory channels
  4 2
• Memory type
  DDR3-1600 DDR3-1600
• PCIe lanes
  - 16
• PCIe version
  - 3.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i7-3960X and Intel Xeon E3-1275 v3 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)
  130 W 84 W

Architecture, interfaces, additional instructions supported by Intel Core i7-3960X and Intel Xeon E3-1275 v3, virtual machine technologies and process technology.

• Architecture
  Sandy Bridge E Haswell S
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4.1, SSE4.2, AVX SSE4.1, SSE4.2, AVX2
• L3-Cache
  15 MB 8 MB
• Release date
  Q4/2011 Q2/2013
• Socket
  LGA 2011 LGA 1150
• Technology
  32 nm 22 nm
• Virtualization
  VT-x, VT-x EPT, VT-d (C2 Stepping) VT-x, VT-x EPT, VT-d