HWBench.com

    GeForce GTX 660M vs GeForce GT 755M

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    GeForce GT 755M
    Memory: 2048Mb GDDR5MOBILE
    Release date: 25 Jun 2013
    GeForce GT 755M

    Summary

    Synthetic performance index

    • GeForce GTX 660M
      100%
    • GeForce GT 755M
      108%

    Relative performance

    Reasons to consider GeForce GTX 660M

    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 GT 755M

    This is a much newer product, it might have better long term support.
    Around 8% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 GT 755M

    HWBench recommends GeForce GT 755M

    The GeForce GT 755M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GTX 660MGeForce GT 755M
    GPU NameGK107 (N13E-GE-A2)vsGK107 (GT 755M)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs118 mm²
    Transistors1,270 millionvs1,270 million
    Shaders384vs384
    Compute Units2vs2
    Core clock835 MHzvs980 MHz
    ROPs16vs16
    TMUs32vs32

    Memory Configuration

    GeForce GTX 660MGeForce GT 755M
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs128 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs1350 MHz
    5400 MHz effective
    Memory Size1024 Mbvs2048 Mb

    Additional details

    GeForce GTX 660MGeForce GT 755M
    TDP50 wattsvs50 watts
    Release Date22 Mar 2012vs25 Jun 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • GeForce GT 755M
      7.84 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • GeForce GT 755M
      31.36 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • GeForce GT 755M
      86.40 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • GeForce GT 755M
      752.60 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 660M
      2570
    • GeForce GT 755M
      2800

    Points (higher is better)

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