HWBench.com

    GeForce GTX 660M vs GeForce GTX 870M

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    GeForce GTX 870M
    Memory: 3072Mb GDDR5MOBILE
    Release date: 12 Mar 2014
    GeForce GTX 870M

    Summary

    Synthetic performance index

    • GeForce GTX 660M
      100%
    • GeForce GTX 870M
      280%

    Relative performance

    Reasons to consider GeForce GTX 660M

    50 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 870M .
    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 870M

    This is a much newer product, it might have better long term support.
    Around 180% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 870M

    HWBench recommends GeForce GTX 870M

    The GeForce GTX 870M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GTX 660MGeForce GTX 870M
    GPU NameGK107 (N13E-GE-A2)vsGK104 (N15E-GT-A2)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs294 mm²
    Transistors1,270 millionvs3,540 million
    Shaders384vs1344
    Compute Units2vs7
    Core clock835 MHzvs941 MHz
    ROPs16vs24
    TMUs32vs112

    Memory Configuration

    GeForce GTX 660MGeForce GTX 870M
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs192 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs1250 MHz
    5000 MHz effective
    Memory Size1024 Mbvs3072 Mb

    Additional details

    GeForce GTX 660MGeForce GTX 870M
    TDP50 wattsvs100 watts
    Release Date22 Mar 2012vs12 Mar 2014

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • GeForce GTX 870M
      26.35 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • GeForce GTX 870M
      105.40 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • GeForce GTX 870M
      120.00 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • GeForce GTX 870M
      2529.40 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 660M
      2570
    • GeForce GTX 870M
      7200

    Points (higher is better)

    Similar comparisons