HWBench.com

    GeForce 840A vs GeForce 940M

    GeForce 840A
    Memory: 1024Mb DDR3MOBILE
    Release date: 17 Mar 2014
    GeForce 840A
    GeForce 940M
    Memory: 2048Mb DDR3MOBILE
    Release date: 13 Mar 2015
    GeForce 940M
    You are comparing OEM or variant versions of at least one VGA. Did you mean GeForce 840A vs GeForce 940M instead?

    Summary

    Synthetic performance index

    • GeForce 840A
      100%
    • GeForce 940M
      100%

    Relative performance

    Reasons to consider GeForce 840A

    42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce 940M .
    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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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 940M

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    Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications

    No clear winner declared

    We have no data to declare a winner at this time.

    Specifications

    Core Configuration

    GeForce 840AGeForce 940M
    GPU NameGM108 ()vsGM107 (N16S-GT1-KB-B)
    Fab Process28 nmvs28 nm
    Die Size0 mm²vs148 mm²
    Transistorsunknownvs1,870 million
    Shaders384vs512
    Compute Units3vs4
    Core clock1029 MHzvs1029 MHz
    ROPs8vs16
    TMUs16vs32

    Memory Configuration

    GeForce 840AGeForce 940M
    Memory TypeDDR3vsDDR3
    Bus Width64 bitvs128 bit
    Memory Speed1001 MHz
    2002 MHz effective    		vs900 MHz
    1800 MHz effective
    Memory Size1024 Mbvs2048 Mb

    Additional details

    GeForce 840AGeForce 940M
    TDP33 wattsvs75 watts
    Release Date17 Mar 2014vs13 Mar 2015

    Raw Performance comparison

    Pixel Rate

    • GeForce 840A
      8.23 GP/s
    • GeForce 940M
      16.46 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce 840A
      16.46 GT/s
    • GeForce 940M
      32.90 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce 840A
      16.02 GB/s
    • GeForce 940M
      28.80 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce 840A
      790.30 GFLOPs
    • GeForce 940M
      1053.70 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce 840A
      2430
    • GeForce 940M
      2450

    Points (higher is better)

    Similar comparisons