HWBench.com

    GeForce GTX 660M vs GeForce GT 740M

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    GeForce GT 740M
    Memory: 2048Mb DDR3MOBILE
    Release date: 20 Jun 2013
    GeForce GT 740M

    Summary

    Synthetic performance index

    • GeForce GTX 660M
      138%
    • GeForce GT 740M
      100%

    Relative performance

    Reasons to consider GeForce GTX 660M

    Around 38% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

    Reasons to consider GeForce GT 740M

    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications
    GeForce GTX 660M

    HWBench recommends GeForce GTX 660M

    The GeForce GTX 660M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GTX 660MGeForce GT 740M
    GPU NameGK107 (N13E-GE-A2)vsGK208 (GT 740M)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs87 mm²
    Transistors1,270 millionvsunknown
    Shaders384vs384
    Compute Units2vs2
    Core clock835 MHzvs980 MHz
    ROPs16vs8
    TMUs32vs16

    Memory Configuration

    GeForce GTX 660MGeForce GT 740M
    Memory TypeGDDR5vsDDR3
    Bus Width128 bitvs64 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs900 MHz
    1800 MHz effective
    Memory Size1024 Mbvs2048 Mb

    Additional details

    GeForce GTX 660MGeForce GT 740M
    TDP50 wattsvs33 watts
    Release Date22 Mar 2012vs20 Jun 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • GeForce GT 740M
      7.84 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • GeForce GT 740M
      15.68 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • GeForce GT 740M
      14.40 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • GeForce GT 740M
      752.60 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 660M
      2570
    • GeForce GT 740M
      1860

    Points (higher is better)

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