Intel Core i7-4960X vs Intel Core i7-3820. Specifications

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

• CPU group
  Intel Core i 4000X Intel Core i 3000X
• Family
  Intel Core i7 Extreme Edition Intel Core i7 Extreme Edition
• Generation
  4 3
• 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
  3.6 GHz 3.6 GHz
• Core architecture
  normal normal
• CPU Cores
  6 4
• CPU Threads
  12 8
• Hyperthreading / SMT
  Yes Yes
• Overclocking
  Yes Yes
• Turbo Frequency (1 Core)
  4 GHz 3.8 GHz
• Turbo Frequency (6 Cores)
  4 GHz -
• Turbo Frequency (4 Cores)
  - 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 Intel Core i7-3820 and Intel Core i7-4960X. Depending on the motherboards, higher or lower memory frequencies may be supported.

• ECC
  No No
• Max. Memory
  - 64 GB
• Memory channels
  4 4
• Memory type
  DDR3-1866 DDR3-1066DDR3-1333DDR3-1600
• PCIe lanes
  40 40
• PCIe version
  3.0 2.0

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Core i7-4960X and Intel Core i7-3820 Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

• Maximum Operating Temperature
  - 105 °C
• TDP (PL1, legacy label)
  130 W 130 W

Architecture, interfaces, additional instructions supported by Intel Core i7-4960X and Intel Core i7-3820, virtual machine technologies and process technology.

• Architecture
  Ivy Bridge E Sandy Bridge E
• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• ISA extensions
  SSE4.1, SSE4.2, AVX SSE4.1, SSE4.2, AVX
• L3-Cache
  15 MB 10 MB
• Release date
  Q3/2013 Q1/2012
• Socket
  LGA 2011 LGA 2011
• Technology
  22 nm 32 nm
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT, VT-d (C2 Stepping)