HWBench.com

    GeForce GTX 1080 Mobile vs GeForce 940M

    GeForce GTX 1080 Mobile
    Memory: 8192Mb GDDR5XMOBILE
    Release date: 15 Aug 2016
    GeForce GTX 1080 Mobile
    GeForce 940M
    Memory: 2048Mb DDR3MOBILE
    Release date: 13 Mar 2015
    GeForce 940M

    Summary

    Reasons to consider GeForce GTX 1080 Mobile

    This is a much newer product, it might have better long term support.
    Higher theoretical gaming performance, based on specifications.
    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    Based on an outdated architecture (Nvidia Pascal), there may be no performance optimizations for current games and applications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 940M

    117 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 1080 Mobile .
    Supports PhysX
    Supports G-Sync
    Supports ShadowPlay (allows game streaming/recording with minimum performance penalty)
    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications
    GeForce GTX 1080 Mobile

    HWBench recommends GeForce GTX 1080 Mobile

    Based on theoretical specifications.

    Specifications

    Core Configuration

    GeForce GTX 1080 MobileGeForce 940M
    GPU NameGP104 ()vsGM108 (N16S-GT-S)
    Fab Process16 nmvs28 nm
    Die Size314 mm²vs0 mm²
    Transistors7,200 millionvsunknown
    Shaders2560vs384
    Compute Units20vs3
    Core clock1556 MHzvs1072 MHz
    ROPs64vs8
    TMUs160vs24

    Memory Configuration

    GeForce GTX 1080 MobileGeForce 940M
    Memory TypeGDDR5XvsDDR3
    Bus Width256 bitvs64 bit
    Memory Speed1251 MHz
    10008 MHz effective    		vs900 MHz
    1800 MHz effective
    Memory Size8192 Mbvs2048 Mb

    Additional details

    GeForce GTX 1080 MobileGeForce 940M
    TDP150 wattsvs33 watts
    Release Date15 Aug 2016vs13 Mar 2015

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 1080 Mobile
      99.60 GP/s
    • GeForce 940M
      8.58 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 1080 Mobile
      249.00 GT/s
    • GeForce 940M
      25.73 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 1080 Mobile
      320.00 GB/s
    • GeForce 940M
      14.40 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 1080 Mobile
      7967.00 GFLOPs
    • GeForce 940M
      823.30 GFLOPs

    GFLOPs - higher is better

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