Intel Xeon E3-1275 v3 vs Intel Core i7-2600K. Specifications, performance, tests

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

• Segment
  Desktop / Server Desktop / Server
• Family
  Intel Xeon E3 Intel Core i7
• Generation
  4 2
• CPU group
  Intel Xeon E3 v3 Intel Core i 2000

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
  3.50 GHz 3.40 GHz
• CPU Cores
  4 4
• Turbo (1 Core)
  3.90 GHz 3.80 GHz
• CPU Threads
  8 8
• Turbo (4 Cores)
  3.90 GHz 3.80 GHz
• Hyperthreading
  Yes Yes
• Overclocking
  No 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
  Intel HD Graphics P4600 Intel HD Graphics 3000
• GPU frequency
  0.35 GHz 0.85 GHz
• GPU (Turbo)
  1.25 GHz 1.35 GHz
• Execution units
  20 12
• Shader
  160 96
• Max. GPU Memory
  2 GB --
• Max. displays
  3 2
• Generation
  7.5 6
• DirectX Version
  11.1 10.1
• Technology
  22 nm 32 nm
• Release date
  Q2/2013 Q1/2011

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
  Decode / Encode Decode / Encode
• VP9
  No No
• VP8
  No No
• AV1
  No No
• AVC
  Decode / Encode Decode / Encode
• VC-1
  Decode Decode
• JPEG
  Decode No

Types, channel quantity of RAM supported by Intel Core i7-2600K and Intel Xeon E3-1275 v3. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR3-1600 DDR3-1066DDR3-1333
• Max. Memory
  32 GB
• ECC
  Yes No
• Memory channels
  2 2
• PCIe version
  3.0 2.0
• PCIe lanes
  16 16

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Xeon E3-1275 v3 and Intel Core i7-2600K to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  84 W 95 W

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

• Instruction set (ISA)
  x86-64 (64 bit) x86-64 (64 bit)
• Virtualization
  VT-x, VT-x EPT, VT-d VT-x, VT-x EPT
• ISA extensions
  SSE4.1, SSE4.2, AVX2 SSE4.1, SSE4.2, AVX
• L3-Cache
  8.00 MB 8.00 MB
• Architecture
  Haswell S Sandy Bridge S
• Technology
  22 nm 32 nm
• Socket
  LGA 1150 LGA 1155
• Release date
  Q2/2013 Q1/2011