Intel Core i7-6660U
Intel Core i7-6700
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Intel Core i7-6660U vs Intel Core i7-6700. Specifications, performance, tests

Overall score
star star star star star
Released
Q1/2016
Intel Core i7-6660U
Intel Core i7-6660U
Released
Q3/2015
Overall score
star star star star star
Intel Core i7-6700
Intel Core i7-6700

What's the best choice Intel Core i7-6660U or Intel Core i7-6700? Which processor is faster?

We have prepared a comparison to help you choose the best processor. Compare their specifications and benchmarks.

Intel Core i7-6660U has a maximum frequency of 2.40 GHz. 2 Cores. Power consumption of 15 W. Released in Q1/2016.

Intel Core i7-6700 has a maximum frequency of 3.40 GHz. 4 Cores. Power consumption of 65 W. Released in Q3/2015.

Differences

  • Performance per watt

    times less performance per watt

    15 W left arrow 65 W

Positions in all rankings

Common positions Intel Core i7-6660U CPU in popular benchmarks, for comparison with other models.

  • iGPU - FP32 Performance (Single-precision GFLOPS)
    409 place
  • Place in the overall ranking

    (based on several benchmarks)

    548 left arrow score
  • Higher clock speed

    Around 29% better clock speed

    3.40 GHz left arrow 2.40 GHz
  • More number of cores

    About 2 times more cores

    4 left arrow 2
  • Higher turbo clock speed

    Around 15 % better overclocked clock speed

    4.00 GHz left arrow 3.40 GHz

Positions in all rankings

Common positions Intel Core i7-6700 CPU in popular benchmarks, for comparison with other models.

  • Cinebench R23 (Single-Core)
    274 place
  • Cinebench R23 (Multi-Core)
    265 place
  • Cinebench R20 (Single-Core)
    308 place
  • Cinebench R20 (Multi-Core)
    303 place
  • Cinebench R15 (Single-Core)
    274 place
  • Cinebench R15 (Multi-Core)
    361 place
  • Geekbench 5, 64bit (Single-Core)
    552 place
  • Geekbench 5, 64bit (Multi-Core)
    638 place
  • iGPU - FP32 Performance (Single-precision GFLOPS)
    778 place
  • Blender 2.81 (bmw27)
    85 place
  • Geekbench 3, 64bit (Single-Core)
    54 place
  • Geekbench 3, 64bit (Multi-Core)
    219 place
  • Cinebench R11.5, 64bit (Single-Core)
    48 place
  • Cinebench R11.5, 64bit (Multi-Core)
    172 place
  • Cinebench R11.5, 64bit (iGPU, OpenGL)
    41 place
  • Estimated results for PassMark CPU Mark
    531 place

Specifications

Technical data
Intel Core i7-6660U Intel Core i7-6660U
Intel Core i7-6700 Intel Core i7-6700
CPU family and group

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

  • Segment
    Mobile left arrow Desktop / Server
  • Family
    Intel Core i7 left arrow Intel Core i7
  • Generation
    6 left arrow 6
  • CPU group
    Intel Core i 6000U left arrow Intel Core i 6000
  • Successor
    -- left arrow Intel Core i7-7700
CPU Technical specs

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
    2.40 GHz left arrow 3.40 GHz
  • CPU Cores
    2 left arrow 4
  • Turbo (1 Core)
    3.40 GHz left arrow 4.00 GHz
  • CPU Threads
    4 left arrow 8
  • Hyperthreading
    Yes left arrow Yes
  • Overclocking
    No left arrow No
  • Core architecture
    normal left arrow normal
IGPU

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 Iris Graphics 540 left arrow Intel HD Graphics 530
  • GPU frequency
    0.30 GHz left arrow 0.35 GHz
  • GPU (Turbo)
    1.05 GHz left arrow 1.15 GHz
  • Execution units
    48 left arrow 24
  • Shader
    384 left arrow 192
  • Max. GPU Memory
    32 GB left arrow 64 GB
  • Max. displays
    3 left arrow 3
  • Generation
    9 left arrow 9
  • DirectX Version
    12 left arrow 12
  • Technology
    14 nm left arrow 14 nm
  • Release date
    Q3/2015 left arrow Q3/2015
Hardware codec support

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

  • h265 / HEVC (8 bit)
    Decode / Encode left arrow Decode / Encode
  • h265 / HEVC (10 bit)
    No left arrow Decode
  • h264
    Decode / Encode left arrow Decode / Encode
  • VP9
    No left arrow Decode
  • VP8
    Decode / Encode left arrow Decode / Encode
  • AV1
    No left arrow No
  • AVC
    Decode / Encode left arrow Decode / Encode
  • VC-1
    Decode left arrow Decode
  • JPEG
    Decode / Encode left arrow Decode / Encode
Memory specs & PCI

Types, channel quantity of RAM supported by Intel Core i7-6700 and Intel Core i7-6660U. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR3L-1600 SO-DIMMDDR4-2133 SO-DIMMLPDDR3-1866 left arrow
  • Max. Memory
    32 GB left arrow 64 GB
  • ECC
    No left arrow No
  • Memory channels
    2 left arrow 2
  • PCIe version
    3.0 left arrow 3.0
  • PCIe lanes
    12 left arrow 16
Encryption
  • AES-NI
    Yes left arrow Yes
Thermal Management

Compare the TDP requirements of TDP Intel Core i7-6660U and Intel Core i7-6700 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP (PL1)
    15 W left arrow 65 W
  • TDP down
    9.5 W left arrow --
  • Tjunction max.
    100 °C left arrow --
Technologies and extensions

Architecture, interfaces, additional instructions supported by Intel Core i7-6660U and Intel Core i7-6660U, virtual machine technologies and process technology.

  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • Virtualization
    VT-x, VT-x EPT, VT-d left arrow VT-x, VT-x EPT, VT-d
  • ISA extensions
    SSE4.1, SSE4.2, AVX2 left arrow SSE4.1, SSE4.2, AVX2
  • L3-Cache
    4.00 MB left arrow 8.00 MB
  • Architecture
    Skylake U left arrow Skylake S
  • Technology
    14 nm left arrow 14 nm
  • Socket
    BGA 1356 left arrow LGA 1151
  • Release date
    Q1/2016 left arrow Q3/2015

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between Intel Core i7-6660U and Intel Core i7-6700.

Compare the synthetic test values and choose the best processor!

iGPU - FP32 Performance (Single-precision GFLOPS)
The performance of the iGPU - the internal GPU in games
806
Intel Core i7-6660U
442
Intel Core i7-6700

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