HWBench.com

    GeForce 840M vs GeForce GTX 960M

    GeForce 840M
    Memory: 1024Mb DDR3MOBILE
    Release date: 12 Mar 2014
    GeForce 840M
    GeForce GTX 960M
    Memory: 2048Mb GDDR5MOBILE
    Release date: 13 Mar 2015
    GeForce GTX 960M

    Summary

    Synthetic performance index

    • GeForce 840M
      100%
    • GeForce GTX 960M
      218%

    Relative performance

    Reasons to consider GeForce 840M

    42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 960M .
    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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications

    Reasons to consider GeForce GTX 960M

    This is a much newer product, it might have better long term support.
    Around 118% higher average synthetic performance.
    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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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 960M

    HWBench recommends GeForce GTX 960M

    The GeForce GTX 960M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce 840MGeForce GTX 960M
    GPU NameGM108 (N15S-GT)vsGM107 (N16P-GX-A1)
    Fab Process28 nmvs28 nm
    Die Size0 mm²vs148 mm²
    Transistorsunknownvs1,870 million
    Shaders384vs640
    Compute Units3vs5
    Core clock1029 MHzvs1097 MHz
    ROPs8vs16
    TMUs16vs40

    Memory Configuration

    GeForce 840MGeForce GTX 960M
    Memory TypeDDR3vsGDDR5
    Bus Width64 bitvs128 bit
    Memory Speed1001 MHz
    2002 MHz effective    		vs1253 MHz
    5012 MHz effective
    Memory Size1024 Mbvs2048 Mb

    Additional details

    GeForce 840MGeForce GTX 960M
    TDP33 wattsvs75 watts
    Release Date12 Mar 2014vs13 Mar 2015

    Raw Performance comparison

    Pixel Rate

    • GeForce 840M
      8.23 GP/s
    • GeForce GTX 960M
      17.55 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce 840M
      16.46 GT/s
    • GeForce GTX 960M
      43.90 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce 840M
      16.02 GB/s
    • GeForce GTX 960M
      80.20 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce 840M
      790.30 GFLOPs
    • GeForce GTX 960M
      1404.20 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce 840M
      2430
    • GeForce GTX 960M
      5320

    Points (higher is better)

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