HWBench.com

    Radeon HD 6770 vs Radeon HD 8970 OEM

    Radeon HD 6770
    Memory: 1024Mb GDDR5DESKTOP
    Release date: 21 Jan 2011
    Radeon HD 6770
    Radeon HD 8970 OEM
    Memory: 3072Mb GDDR5DESKTOP
    Release date: 8 Jan 2013
    Radeon HD 8970 OEM

    Summary

    Reasons to consider Radeon HD 6770

    142 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 8970 OEM .
    Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

    Reasons to consider Radeon HD 8970 OEM

    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    Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications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 HD 8970 OEM

    HWBench recommends Radeon HD 8970 OEM

    Based on theoretical specifications.

    Specifications

    Core Configuration

    Radeon HD 6770Radeon HD 8970 OEM
    GPU NameJuniper (Juniper XT)vsTahiti (Tahiti XT)
    Fab Process40 nmvs28 nm
    Die Size166 mm²vs352 mm²
    Transistors1,040 millionvs4,313 million
    Shaders800vs2048
    Compute Units10vs32
    Core clock850 MHzvs925 MHz
    ROPs16vs32
    TMUs40vs128

    Memory Configuration

    Radeon HD 6770Radeon HD 8970 OEM
    Memory TypeGDDR5vsGDDR5
    Bus Width128 bitvs384 bit
    Memory Speed1200 MHz
    4800 MHz effective    		vs1375 MHz
    5500 MHz effective
    Memory Size1024 Mbvs3072 Mb

    Additional details

    Radeon HD 6770Radeon HD 8970 OEM
    TDP108 wattsvs250 watts
    Release Date21 Jan 2011vs8 Jan 2013

    Raw Performance comparison

    Pixel Rate

    • Radeon HD 6770
      13.60 GP/s
    • Radeon HD 8970 OEM
      29.60 GP/s

    GigaPixels - higher is better

    Texel Rate

    • Radeon HD 6770
      34.00 GT/s
    • Radeon HD 8970 OEM
      118.00 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • Radeon HD 6770
      76.80 GB/s
    • Radeon HD 8970 OEM
      264.00 GB/s

    GB/s - higher is better

    Single precision performance

    • Radeon HD 6770
      1360.00 GFLOPs
    • Radeon HD 8970 OEM
      3789.00 GFLOPs

    GFLOPs - higher is better

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