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    Iris Plus Graphics 645 vs Radeon HD 4870 X2

    Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 645 and Radeon HD 4870 X2. 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 Iris Plus Graphics 645 and Radeon HD 4870 X2. 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.
    Iris Plus Graphics 645 Check Price
    Radeon HD 4870 X2

    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

      Iris Plus Graphics 645 Radeon HD 4870 X2
    Power consumption (TDP) 15 Watt 286 Watt
    Interface PCIe 3.0 x1 PCIe 2.0 x16
    Supplementary power connectors 1x 6-pin + 1x 8-pin
    Memory type DDR3/DDR4 GDDR5
    Maximum RAM amount 1 GB
    Display Connectors No outputs 2x DVI, 1x S-Video
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    • Radeon HD 4870 X2 has 1806% more power consumption, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
    • Iris Plus Graphics 645 is used in Laptops, and Radeon HD 4870 X2 - in Desktops.
    • Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 4870 X2 - with TeraScale.
    • Core clock speed of Radeon HD 4870 X2 is 400 MHz higher, than Iris Plus Graphics 645.
    • Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 4870 X2 - by 55 nm process technology.

    Game benchmarks

    high / 1080p 4−5 3−4
    ultra / 1080p 2−3 1−2
    QHD / 1440p 0−1 0−1
    low / 720p 12−14 14−16
    medium / 1080p 5−6 6−7
    Iris Plus Graphics 645 and Radeon HD 4870 X2 have the same average FPS in Assassin's Creed Odyssey.

    Full Specs

      Iris Plus Graphics 645 Radeon HD 4870 X2
    Architecture Gen. 9.5 Coffee Lake TeraScale
    Code name Kaby Lake GT3e R700
    Type Laptop Desktop
    Release date 10 July 2019 12 August 2008
    Pipelines 48 800
    Core clock speed 300 MHz 700 MHz
    Boost Clock 1150 MHz
    Transistor count 956 million
    Manufacturing process technology 14 nm 55 nm
    Texture fill rate 50.40 28.00
    Floating-point performance 2x 1,120.0 gflops
    Length 267 mm
    Memory bus width 256 Bit
    Memory clock speed 3600 MHz
    Memory bandwidth 115.2 GB/s
    Shared memory +
    DirectX 12 (12_1) 10.1 (10_1)
    Shader Model 6.4 4.1
    OpenGL 4.6 3.3
    OpenCL 2.1 1.1
    Vulkan 1.1.103 N/A
    Quick Sync +
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