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    GeForce 840M vs Radeon HD 7950

    In this comparison between GeForce 840M and Radeon HD 7950 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 840M will be the best choice, for others Radeon HD 7950 will be their preference. Study the comparison tables below and make your choice.
    GeForce 840M Check Price
    Radeon HD 7950 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 7950
    Power consumption (TDP) 33 Watt 200 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors 2x 6-pin
    Memory type DDR3 GDDR5
    Maximum RAM amount 4 GB 3 GB
    Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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    • Radeon HD 7950 has 506% more power consumption, than GeForce 840M.
    • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 7950 uses PCIe 3.0 x16 interface.
    • GeForce 840M has 1 GB more memory, than Radeon HD 7950.
    • GeForce 840M is used in Laptops, and Radeon HD 7950 - in Desktops.
    • GeForce 840M is build with Maxwell architecture, and Radeon HD 7950 - with GCN 1.0.
    • GeForce 840M and Radeon HD 7950 are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 840M is 750 MHz higher, than Radeon HD 7950.

    Game benchmarks

    high / 1080p 1−2 35−40
    ultra / 1080p 0−1 21−24
    QHD / 1440p 0−1 16−18
    4K / 2160p − 10−11
    low / 720p 12−14 60−65
    medium / 1080p 3−4 40−45
    The average gaming FPS of Radeon HD 7950 in Assassin's Creed Odyssey is 683% more, than GeForce 840M.

    Full Specs

      GeForce 840M Radeon HD 7950
    Architecture Maxwell GCN 1.0
    Code name N15S-GT Tahiti
    Type Laptop Desktop
    Release date 12 March 2014 31 January 2012
    Pipelines 384 1792
    Core clock speed 1029 MHz
    Boost Clock 1124 MHz 1250 MHz
    Transistor count 4,313 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 89.60
    Floating-point performance 863.2 gflops 2,867 gflops
    Length 267 mm
    Memory bus width 64 Bit 384 Bit
    Memory clock speed 2000 MHz 1250 MHz
    Memory bandwidth 16.02 GB/s 240 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 +
    Monero / XMR (CryptoNight) 0.56 kh/s
    FreeSync +
    Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0 x16
    HDMI +
    Bitcoin / BTC (SHA256) 92 Mh/s 381 Mh/s
    Laptop size medium sized
    Optimus +
    Eyefinity +
    PowerTune +
    ZeroCore +
    Design reference
    Number of Eyefinity displays 6
    CrossFire +
    Decred / DCR (Decred) 0.78 Gh/s
    Ethereum / ETH (DaggerHashimoto) 13.86 Mh/s
    Zcash / ZEC (Equihash) 250 Sol/s
    Compute units 28
    GPU Boost 2.0
    GameWorks +
    AppAcceleration +
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