HWBench.com

    GeForce GTX 660M vs GeForce GTX 780M

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    GeForce GTX 780M
    Memory: 4096Mb GDDR5MOBILE
    Release date: 11 May 2013
    GeForce GTX 780M

    Summary

    Synthetic performance index

    • GeForce GTX 660M
      100%
    • GeForce GTX 780M
      295%

    Relative performance

    Reasons to consider GeForce GTX 660M

    72 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 780M .
    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

    Reasons to consider GeForce GTX 780M

    This is a much newer product, it might have better long term support.
    Around 195% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications
    GeForce GTX 780M

    HWBench recommends GeForce GTX 780M

    The GeForce GTX 780M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GTX 660MGeForce GTX 780M
    GPU NameGK107 (N13E-GE-A2)vsGK104 (N14E-GTX-A2)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs294 mm²
    Transistors1,270 millionvs3,540 million
    Shaders384vs1536
    Compute Units2vs8
    Core clock835 MHzvs771 MHz
    ROPs16vs32
    TMUs32vs128

    Memory Configuration

    GeForce GTX 660MGeForce GTX 780M
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs256 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs1250 MHz
    5000 MHz effective
    Memory Size1024 Mbvs4096 Mb

    Additional details

    GeForce GTX 660MGeForce GTX 780M
    TDP50 wattsvs122 watts
    Release Date22 Mar 2012vs11 May 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • GeForce GTX 780M
      24.67 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • GeForce GTX 780M
      98.70 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • GeForce GTX 780M
      160.00 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • GeForce GTX 780M
      2368.50 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 660M
      2570
    • GeForce GTX 780M
      7600

    Points (higher is better)

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