HWBench.com

    Radeon HD 6990M vs Radeon HD 8570M

    Radeon HD 6990M
    Memory: 2048Mb GDDR5MOBILE
    Release date: 12 Jul 2011
    Radeon HD 6990M
    Radeon HD 8570M
    Memory: 1024Mb DDR3MOBILE
    Release date: 1 Mar 2013
    Radeon HD 8570M

    Summary

    Synthetic performance index

    • Radeon HD 6990M
      249%
    • Radeon HD 8570M
      100%

    Relative performance

    Reasons to consider Radeon HD 6990M

    Around 149% higher average synthetic performance.
    Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

    Reasons to consider Radeon HD 8570M

    This is a much newer product, it might have better long term support.
    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    Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications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 HD 6990M

    HWBench recommends Radeon HD 6990M

    The Radeon HD 6990M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    Radeon HD 6990MRadeon HD 8570M
    GPU NameBlackcomb (Blackcomb XTX)vsSun (Sun PRO)
    Fab Process40 nmvs28 nm
    Die Size212 mm²vs77 mm²
    Transistors1,700 millionvs1,040 million
    Shaders1120vs320
    Compute Units14vs5
    Core clock715 MHzvs750 MHz
    ROPs32vs8
    TMUs56vs20

    Memory Configuration

    Radeon HD 6990MRadeon HD 8570M
    Memory TypeGDDR5vsDDR3
    Bus Width256 bitvs64 bit
    Memory Speed900 MHz
    3600 MHz effective    		vs1000 MHz
    2000 MHz effective
    Memory Size2048 Mbvs1024 Mb

    Additional details

    Radeon HD 6990MRadeon HD 8570M
    TDP100 wattsvs0 watts
    Release Date12 Jul 2011vs1 Mar 2013

    Raw Performance comparison

    Pixel Rate

    • Radeon HD 6990M
      22.88 GP/s
    • Radeon HD 8570M
      6.60 GP/s

    GigaPixels - higher is better

    Texel Rate

    • Radeon HD 6990M
      40.00 GT/s
    • Radeon HD 8570M
      16.50 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • Radeon HD 6990M
      115.20 GB/s
    • Radeon HD 8570M
      16.00 GB/s

    GB/s - higher is better

    Single precision performance

    • Radeon HD 6990M
      1601.60 GFLOPs
    • Radeon HD 8570M
      528.00 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • Radeon HD 6990M
      3190
    • Radeon HD 8570M
      1280

    Points (higher is better)

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