HWBench.com

    Radeon HD 8670M vs Radeon HD 8790M

    Radeon HD 8670M
    Memory: 1024Mb DDR3MOBILE
    Release date: 1 Mar 2013
    Radeon HD 8670M
    Radeon HD 8790M
    Memory: 2048Mb GDDR5MOBILE
    Release date: 1 Apr 2013
    Radeon HD 8790M

    Summary

    Synthetic performance index

    • Radeon HD 8670M
      100%
    • Radeon HD 8790M
      139%

    Relative performance

    Reasons to consider Radeon HD 8670M

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    Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

    Reasons to consider Radeon HD 8790M

    Around 39% higher average synthetic performance.
    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    Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications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 8790M

    HWBench recommends Radeon HD 8790M

    The Radeon HD 8790M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    Radeon HD 8670MRadeon HD 8790M
    GPU NameSun (Sun XT)vsMars (Mars XTX)
    Fab Process28 nmvs28 nm
    Die Size77 mm²vs77 mm²
    Transistors1,040 millionvs1,040 million
    Shaders320vs384
    Compute Units5vs6
    Core clock925 MHzvs850 MHz
    ROPs8vs8
    TMUs20vs24

    Memory Configuration

    Radeon HD 8670MRadeon HD 8790M
    Memory TypeDDR3vsGDDR5
    Bus Width64 bitvs128 bit
    Memory Speed1000 MHz
    2000 MHz effective    		vs1000 MHz
    4000 MHz effective
    Memory Size1024 Mbvs2048 Mb

    Additional details

    Radeon HD 8670MRadeon HD 8790M
    TDP0 wattsvs0 watts
    Release Date1 Mar 2013vs1 Apr 2013

    Raw Performance comparison

    Pixel Rate

    • Radeon HD 8670M
      7.80 GP/s
    • Radeon HD 8790M
      7.20 GP/s

    GigaPixels - higher is better

    Texel Rate

    • Radeon HD 8670M
      19.50 GT/s
    • Radeon HD 8790M
      21.60 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • Radeon HD 8670M
      16.00 GB/s
    • Radeon HD 8790M
      64.00 GB/s

    GB/s - higher is better

    Single precision performance

    • Radeon HD 8670M
      624.00 GFLOPs
    • Radeon HD 8790M
      691.20 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • Radeon HD 8670M
      1530
    • Radeon HD 8790M
      2130

    Points (higher is better)

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