HWBench.com

    GeForce GTX 660M vs Radeon R9 M290X

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    Radeon R9 M290X
    Memory: 4096Mb GDDR5MOBILE
    Release date: 9 Jan 2014
    Radeon R9 M290X

    Summary

    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 Radeon R9 M290X .
    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 Radeon R9 M290X

    This is a much newer product, it might have better long term support.
    Higher theoretical gaming performance, based on specifications.
    Supports Direct3D 12 Async Compute
    Supports ReLive (allows game streaming/recording with minimum performance penalty)
    Supports Mantle
    Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications
    Radeon R9 M290X

    HWBench recommends Radeon R9 M290X

    Based on theoretical specifications.

    Specifications

    Core Configuration

    GeForce GTX 660MRadeon R9 M290X
    GPU NameGK107 (N13E-GE-A2)vsNeptune (Neptune XT)
    Fab Process28 nmvs28 nm
    Die Size118 mm²vs212 mm²
    Transistors1,270 millionvs2,800 million
    Shaders384vs1280
    Compute Units2vs20
    Core clock835 MHzvs850 MHz
    ROPs16vs32
    TMUs32vs80

    Memory Configuration

    GeForce GTX 660MRadeon R9 M290X
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs256 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs1200 MHz
    4800 MHz effective
    Memory Size1024 Mbvs4096 Mb

    Additional details

    GeForce GTX 660MRadeon R9 M290X
    TDP50 wattsvs100 watts
    Release Date22 Mar 2012vs9 Jan 2014

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • Radeon R9 M290X
      28.80 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • Radeon R9 M290X
      72.00 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • Radeon R9 M290X
      153.60 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • Radeon R9 M290X
      2304.00 GFLOPs

    GFLOPs - higher is better

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