Intel Celeron 2957U vs Intel Core i7-4940MX. Specifications, performance, tests

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

• Segment
  Mobile Mobile
• Family
  Intel Celeron Intel Core i7 Extreme Edition
• Generation
  4 4
• CPU group
  Intel Celeron 2000 Intel Core i 4000M/4000H

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
  1.40 GHz 3.10 GHz
• CPU Cores
  2 4
• Turbo (1 Core)
  No turbo 3.90 GHz
• CPU Threads
  2 8
• Hyperthreading
  No 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 (Haswell GT1) Intel HD Graphics 4600
• GPU frequency
  0.20 GHz 0.40 GHz
• GPU (Turbo)
  1.00 GHz 1.35 GHz
• Execution units
  10 20
• Shader
  80 160
• Max. GPU Memory
  -- 2 GB
• Max. displays
  3 3
• Generation
  7.5 7.5
• DirectX Version
  11.1 11.1
• Technology
  22 nm 22 nm
• Release date
  Q4/2012 Q2/2013

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 Decode

Types, channel quantity of RAM supported by Intel Core i7-4940MX and Intel Celeron 2957U. Depending on the motherboards, higher or lower memory frequencies may be supported.

• Memory type
  DDR3L-1600 SO-DIMM DDR3L-1600 SO-DIMM
• ECC
  No No
• Memory channels
  2 4
• PCIe version
  2.0 3.0
• PCIe lanes
  10 16

• AES-NI
  Yes Yes

Compare the TDP requirements of TDP Intel Celeron 2957U and Intel Core i7-4940MX to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

• TDP (PL1)
  15 W 57 W

Architecture, interfaces, additional instructions supported by Intel Celeron 2957U and Intel Celeron 2957U, 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, VT-d
• ISA extensions
  SSE4.1, SSE4.2 SSE4.1, SSE4.2, AVX2
• L3-Cache
  2.00 MB 8.00 MB
• Architecture
  Haswell U Haswell H
• Technology
  22 nm 22 nm
• Socket
  BGA 1168 PGA 946
• Release date
  Q4/2013 Q4/2013