HWBench.com

    GeForce 840M vs GeForce GTX 970M

    GeForce 840M
    Memory: 1024Mb DDR3MOBILE
    Release date: 12 Mar 2014
    GeForce 840M
    GeForce GTX 970M
    Memory: 6144Mb GDDR5MOBILE
    Release date: 7 Oct 2014
    GeForce GTX 970M

    Summary

    Synthetic performance index

    • GeForce 840M
      100%
    • GeForce GTX 970M
      405%

    Relative performance

    Reasons to consider GeForce 840M

    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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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 970M

    Around 305% 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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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 970M

    HWBench recommends GeForce GTX 970M

    The GeForce GTX 970M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce 840MGeForce GTX 970M
    GPU NameGM108 (N15S-GT)vsGM204 (N16E-GT-A2)
    Fab Process28 nmvs28 nm
    Die Size0 mm²vs398 mm²
    Transistorsunknownvs5,200 million
    Shaders384vs1280
    Compute Units3vs10
    Core clock1029 MHzvs1038 MHz
    ROPs8vs48
    TMUs16vs80

    Memory Configuration

    GeForce 840MGeForce GTX 970M
    Memory TypeDDR3vsGDDR5
    Bus Width64 bitvs192 bit
    Memory Speed1001 MHz
    2002 MHz effective    		vs1253 MHz
    5012 MHz effective
    Memory Size1024 Mbvs6144 Mb

    Additional details

    GeForce 840MGeForce GTX 970M
    TDP33 wattsvs0 watts
    Release Date12 Mar 2014vs7 Oct 2014

    Raw Performance comparison

    Pixel Rate

    • GeForce 840M
      8.23 GP/s
    • GeForce GTX 970M
      49.80 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce 840M
      16.46 GT/s
    • GeForce GTX 970M
      83.00 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce 840M
      16.02 GB/s
    • GeForce GTX 970M
      120.30 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce 840M
      790.30 GFLOPs
    • GeForce GTX 970M
      2657.30 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce 840M
      2430
    • GeForce GTX 970M
      9860

    Points (higher is better)

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