HWBench.com

    GeForce GTX 550 Ti vs GeForce GTX 645 OEM

    GeForce GTX 550 Ti
    Memory: 1024Mb GDDR5DESKTOP
    Release date: 15 Mar 2011
    GeForce GTX 550 Ti
    GeForce GTX 645 OEM
    Memory: 1024Mb GDDR5DESKTOP
    Release date: 22 Apr 2013
    GeForce GTX 645 OEM

    Summary

    Reasons to consider GeForce GTX 550 Ti

    Supports PhysX
    Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications

    Reasons to consider GeForce GTX 645 OEM

    51 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 550 Ti .
    This is a much newer product, it might have better long term support.
    Higher theoretical gaming performance, based on specifications.
    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications
    GeForce GTX 645 OEM

    HWBench recommends GeForce GTX 645 OEM

    Based on theoretical specifications.

    Specifications

    Core Configuration

    GeForce GTX 550 TiGeForce GTX 645 OEM
    GPU NameGF116 (GF116-400-A1)vsGK106 ()
    Fab Process40 nmvs28 nm
    Die Size238 mm²vs221 mm²
    Transistors1,170 millionvs2,540 million
    Shaders192vs576
    Compute Units4vs3
    Core clock900 MHzvs824 MHz
    ROPs24vs16
    TMUs32vs48

    Memory Configuration

    GeForce GTX 550 TiGeForce GTX 645 OEM
    Memory TypeGDDR5vsGDDR5
    Bus Width192 bitvs128 bit
    Memory Speed1026 MHz
    4104 MHz effective    		vs1000 MHz
    4000 MHz effective
    Memory Size1024 Mbvs1024 Mb

    Additional details

    GeForce GTX 550 TiGeForce GTX 645 OEM
    TDP116 wattsvs65 watts
    Release Date15 Mar 2011vs22 Apr 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GTX 550 Ti
      7.20 GP/s
    • GeForce GTX 645 OEM
      9.89 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GTX 550 Ti
      28.80 GT/s
    • GeForce GTX 645 OEM
      39.60 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GTX 550 Ti
      98.50 GB/s
    • GeForce GTX 645 OEM
      64.00 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GTX 550 Ti
      691.20 GFLOPs
    • GeForce GTX 645 OEM
      949.20 GFLOPs

    GFLOPs - higher is better

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