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  • NVidia GTX 770 Video Card Review
  • NVidia GTX 770 Video Card Review



    A little over a year ago NVidia launched the all new GTX 680 based on new chip architecture called Kepler.  Not to be confused with the planet searching satellite, the Kepler GPU was a Fermi design extension that brought with it higher performance while drawing significantly less power.  

    In this review we will be looking at the next generation of Kepler based GPUs called the GTX 770.  Earlier this month NVidia released the first in the 700 generation called the GTX 780.  The 780 is based on a cut down version of GTX Titan and still promises to be one of the most powerful video cards you can buy.  GTX 770 is based on an earlier GPU, GK104, which powered both the GTX 680 and popular GTX 670.  We had the opportunity to review the GTX 670 OC from Gigabyte last year and will see how that card stacks up to the next generation.
    Processing Units
    Graphics Processing Clusters 4
    Streaming Multiprocessors 8
    CUDA Cores 1536
    Texture Units 128
    ROP Units 32

    Clock Speeds
    Base Clock 1046 MHz
    Boost Clock 1085MHz
    Memory Clock (Data rate) 7010 MHz
    L2 Cache Size 512KB

    Total Video Memory 2048MB or 4096MB GDDR5
    Memory Interface 256-bit
    Total Memory Bandwidth 224.3 GB/s
    Texture Filtering Rate (Bilinear) 133.9 GigaTexels/sec

    Fabrication Process 28 nm
    Transistor Count 3.54 Billion
    Connectors 2 x Dual-Link DVI 1 x HDMI 1 x DisplayPort
    Form Factor Dual Slot
    Power Connectors One 8-pin and one 6-pin
    Recommended Power Supply 600 Watts
    Thermal Design Power (TDP) 230 Watts
    Thermal Threshold 95° C

    As we mentione before the GTX 770 is based on GK104 and in looking at the specs this GPU is almost identical to GTX 680 with the addition of faster memory and more total memory bandwidth.  Clock and Boost clock speeds are also slightly higher which is why GTX 770 requires a larger power supply and, in turn, generates more heat.