HWBench.com

    GeForce GTX 1080 vs GeForce GTX 660

    GeForce GTX 1080
    Memory: 8192Mb GDDR5XDESKTOP
    Release date: 27 May 2016
    GeForce GTX 1080
    GeForce GTX 660
    Memory: 2048Mb GDDR5DESKTOP
    Release date: 6 Sep 2012
    GeForce GTX 660

    Summary

    Synthetic performance index

    • GeForce GTX 1080
      443%
    • GeForce GTX 660
      100%

    Relative performance

    Gaming performance index

    • GeForce GTX 1080
      442%
    • GeForce GTX 660
      100%

    Relative performance

    Reasons to consider GeForce GTX 1080

    342% higher gaming performance.
    This is a much newer product, it might have better long term support.
    Supports PhysX
    Supports G-Sync
    Supports ShadowPlay (allows game streaming/recording with minimum performance penalty)
    Supports Direct3D 12 Async Compute
    Based on an outdated architecture (Nvidia Pascal), there may be no performance optimizations for current games and applications

    Reasons to consider GeForce GTX 660

    40 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 1080 .
    Supports PhysX
    Supports G-Sync
    Supports ShadowPlay (allows game streaming/recording with minimum performance penalty)
    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications
    GeForce GTX 1080

    HWBench recommends GeForce GTX 1080

    The GeForce GTX 1080 is the better performing card based on the game benchmark suite used (2 combinations of games and resolutions).

    Specifications

    Core Configuration

    GeForce GTX 1080GeForce GTX 660
    GPU NameGP104 (GP104-400-A1)vsGK106 (GK106-400-A1)
    Fab Process16 nmvs28 nm
    Die Size314 mm²vs221 mm²
    Transistors7,200 millionvs2,540 million
    Shaders2560vs960
    Compute Units20vs5
    Core clock1607 MHzvs980 MHz
    ROPs64vs24
    TMUs160vs80

    Memory Configuration

    GeForce GTX 1080GeForce GTX 660
    Memory TypeGDDR5XvsGDDR5
    Bus Width256 bitvs192 bit
    Memory Speed1251 MHz
    10008 MHz effective    		vs1502 MHz
    6008 MHz effective
    Memory Size8192 Mbvs2048 Mb

    Additional details

    GeForce GTX 1080GeForce GTX 660
    TDP180 wattsvs140 watts
    Release Date27 May 2016vs6 Sep 2012

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 1080
      102.80 GP/s
    • GeForce GTX 660
      19.60 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 1080
      257.10 GT/s
    • GeForce GTX 660
      78.40 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 1080
      320.00 GB/s
    • GeForce GTX 660
      144.00 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 1080
      8228.00 GFLOPs
    • GeForce GTX 660
      1882.00 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 1080
      30160
    • GeForce GTX 660
      6800

    Points (higher is better)

    Game benchmarks

    Grand Theft Auto V

    DX11, Max Details, 16:1 AF, 2xMSAA

    • GeForce GTX 1080
      159
    • GeForce GTX 660
      37

    FPS (higher is better)

    Grand Theft Auto V

    DX11, Max Details, 16:1 AF, 2xMSAA

    • GeForce GTX 1080
      114
    • GeForce GTX 660
      25

    FPS (higher is better)

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