HWBench.com

    GeForce GTX 660M vs Radeon HD 6970M

    GeForce GTX 660M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 22 Mar 2012
    GeForce GTX 660M
    Radeon HD 6970M
    Memory: 1024Mb GDDR5MOBILE
    Release date: 4 Jan 2011
    Radeon HD 6970M

    Summary

    Synthetic performance index

    • GeForce GTX 660M
      100%
    • Radeon HD 6970M
      124%

    Relative performance

    Reasons to consider GeForce GTX 660M

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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

    Reasons to consider Radeon HD 6970M

    Around 24% higher average synthetic performance.
    Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications
    Radeon HD 6970M

    HWBench recommends Radeon HD 6970M

    The Radeon HD 6970M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GTX 660MRadeon HD 6970M
    GPU NameGK107 (N13E-GE-A2)vsBlackcomb (Blackcomb XT)
    Fab Process28 nmvs40 nm
    Die Size118 mm²vs212 mm²
    Transistors1,270 millionvs1,700 million
    Shaders384vs960
    Compute Units2vs12
    Core clock835 MHzvs680 MHz
    ROPs16vs32
    TMUs32vs48

    Memory Configuration

    GeForce GTX 660MRadeon HD 6970M
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs256 bit
    Memory Speed1000 MHz
    4000 MHz effective    		vs900 MHz
    3600 MHz effective
    Memory Size1024 Mbvs1024 Mb

    Additional details

    GeForce GTX 660MRadeon HD 6970M
    TDP50 wattsvs75 watts
    Release Date22 Mar 2012vs4 Jan 2011

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 660M
      6.68 GP/s
    • Radeon HD 6970M
      21.76 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 660M
      26.72 GT/s
    • Radeon HD 6970M
      32.60 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 660M
      64.00 GB/s
    • Radeon HD 6970M
      115.20 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 660M
      641.30 GFLOPs
    • Radeon HD 6970M
      1305.60 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GTX 660M
      2570
    • Radeon HD 6970M
      3190

    Points (higher is better)

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