HWBench.com

    GeForce GT 640M vs GeForce GT 740M

    GeForce GT 640M
    Memory: 2048Mb DDR3MOBILE
    Release date: 22 Mar 2012
    GeForce GT 640M
    GeForce GT 740M
    Memory: 2048Mb DDR3MOBILE
    Release date: 20 Jun 2013
    GeForce GT 740M

    Summary

    Synthetic performance index

    • GeForce GT 640M
      100%
    • GeForce GT 740M
      105%

    Relative performance

    Reasons to consider GeForce GT 640M

    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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.
    Around 5% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 740M

    HWBench recommends GeForce GT 740M

    The GeForce GT 740M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GT 640MGeForce GT 740M
    GPU NameGK107 (N13P-GS)vsGK208 (GT 740M)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs87 mm²
    Transistors1,270 millionvsunknown
    Shaders384vs384
    Compute Units2vs2
    Core clock625 MHzvs980 MHz
    ROPs16vs8
    TMUs32vs16

    Memory Configuration

    GeForce GT 640MGeForce GT 740M
    Memory TypeDDR3vsDDR3
    Bus Width128 bitvs64 bit
    Memory Speed900 MHz
    1800 MHz effective    		vs900 MHz
    1800 MHz effective
    Memory Size2048 Mbvs2048 Mb

    Additional details

    GeForce GT 640MGeForce GT 740M
    TDP32 wattsvs33 watts
    Release Date22 Mar 2012vs20 Jun 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GT 640M
      5.00 GP/s
    • GeForce GT 740M
      7.84 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GT 640M
      20.00 GT/s
    • GeForce GT 740M
      15.68 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GT 640M
      28.80 GB/s
    • GeForce GT 740M
      14.40 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GT 640M
      480.00 GFLOPs
    • GeForce GT 740M
      752.60 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GT 640M
      1770
    • GeForce GT 740M
      1860

    Points (higher is better)

    Similar comparisons