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    GeForce GTX 660 vs Iris Plus Graphics 645

    Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660 and Iris Plus Graphics 645. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660 and Iris Plus Graphics 645. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
    GeForce GTX 660 Check Price
    Iris Plus Graphics 645 Check Price

    Iris Plus Graphics 645 is a Laptop Graphics Card

    Note: Iris Plus Graphics 645 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Iris Plus Graphics 645 here:

    Iris Plus Graphics 645 Laptops

    Main Specs

      GeForce GTX 660 Iris Plus Graphics 645
    Power consumption (TDP) 140 Watt 15 Watt
    Interface PCIe 3.0 x16 PCIe 3.0 x1
    Supplementary power connectors One 6-pin
    Memory type GDDR5 DDR3/DDR4
    Maximum RAM amount 2 GB
    Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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    • GeForce GTX 660 has 833% more power consumption, than Iris Plus Graphics 645.
    • GeForce GTX 660 is connected by PCIe 3.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
    • GeForce GTX 660 is used in Desktops, and Iris Plus Graphics 645 - in Laptops.
    • GeForce GTX 660 is build with Kepler architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
    • Core clock speed of GeForce GTX 660 is 680 MHz higher, than Iris Plus Graphics 645.
    • GeForce GTX 660 is manufactured by 28 nm process technology, and Iris Plus Graphics 645 - by 14 nm process technology.

    Game benchmarks

    high / 1080p 20−22 4−5
    ultra / 1080p 12−14 2−3
    QHD / 1440p 6−7 0−1
    4K / 2160p 5−6 −
    low / 720p 40−45 12−14
    medium / 1080p 24−27 5−6
    The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 316% more, than Iris Plus Graphics 645.

    Full Specs

      GeForce GTX 660 Iris Plus Graphics 645
    Architecture Kepler Gen. 9.5 Coffee Lake
    Code name GK106 Kaby Lake GT3e
    Type Desktop Laptop
    Release date 6 September 2012 10 July 2019
    Pipelines 960 48
    Core clock speed 980 MHz 300 MHz
    Boost Clock 1033 MHz 1150 MHz
    Transistor count 2,540 million
    Manufacturing process technology 28 nm 14 nm
    Texture fill rate 78.4 billion/sec 50.40
    Floating-point performance 1,981 gflops
    Length 9.5" (24.1 cm)
    Memory bus width 192-bit GDDR5
    Memory clock speed 6.0 GB/s
    Memory bandwidth 144.2 GB/s
    Shared memory +
    DirectX 12 (11_0) 12 (12_1)
    Shader Model 5.1 6.4
    OpenGL 4.3 4.6
    OpenCL 1.2 2.1
    Vulkan 1.1.126 1.1.103
    CUDA +
    CUDA cores 960
    Bus support PCI Express 3.0
    Height 4.376" (11.1 cm)
    SLI options +
    Multi monitor support 4 displays
    HDMI +
    HDCP +
    Maximum VGA resolution 2048x1536
    Audio input for HDMI Internal
    3D Blu-Ray +
    3D Gaming +
    3D Vision +
    Bitcoin / BTC (SHA256) 66 Mh/s
    Quick Sync +
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