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    GeForce 840M vs Radeon HD 7850

    If you are going to buy a new graphics card and are choosing between GeForce 840M and Radeon HD 7850, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 840M stacks up against Radeon HD 7850, check out specs charts below.
    GeForce 840M Check Price
    Radeon HD 7850 Check Price

    GeForce 840M is a Laptop Graphics Card

    Note: GeForce 840M 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 GeForce 840M here:

    GeForce 840M Laptops

    Main Specs

      GeForce 840M Radeon HD 7850
    Power consumption (TDP) 33 Watt 225 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors 1x 6-pin
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 2 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 7850 has 581% more power consumption, than GeForce 840M.
    • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 7850 uses PCIe 3.0 x16 interface.
    • GeForce 840M has 2 GB more memory, than Radeon HD 7850.
    • GeForce 840M is used in Laptops, and Radeon HD 7850 - in Desktops.
    • GeForce 840M is build with Maxwell architecture, and Radeon HD 7850 - with GCN 1.0.
    • GeForce 840M and Radeon HD 7850 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 840M is 800 MHz higher, than Radeon HD 7850.

    Game benchmarks

    high / 1080p 1−2 18−20
    ultra / 1080p 0−1 10−12
    QHD / 1440p 0−1 5−6
    4K / 2160p − 4−5
    low / 720p 12−14 35−40
    medium / 1080p 3−4 24−27
    The average gaming FPS of Radeon HD 7850 in Assassin's Creed Odyssey is 350% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon HD 7850
    Architecture Maxwell GCN 1.0
    Code name N15S-GT Pitcairn
    Type Laptop Desktop
    Release date 12 March 2014 5 March 2012
    Pipelines 384 1024
    Core clock speed 1029 MHz
    Boost Clock 1124 MHz 1000 MHz
    Transistor count 2,800 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 55.04
    Floating-point performance 863.2 gflops 1,761 gflops
    Length 210 mm
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2000 MHz 1200 MHz
    Memory bandwidth 16.02 GB/s 153.6 GB/s
    Shared memory -
    DirectX 12 (11_0)
    Shader Model 5.1 5.1
    OpenGL 4.5 4.6
    OpenCL 1.2 1.2
    Vulkan 1.1.126
    CUDA +
    FreeSync +
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 2.1 x16
    HDMI +
    Bitcoin / BTC (SHA256) 92 Mh/s 249 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    Design reference
    CrossFire +
    Ethereum / ETH (DaggerHashimoto) 12.5 Mh/s
    GPU Boost 2.0
    GameWorks +
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