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    GeForce 840A vs Radeon R9 M290X

    When comparing GeForce 840A and Radeon R9 M290X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 840A and Radeon R9 M290X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
    GeForce 840A
    Radeon R9 M290X Check Price

    Radeon R9 M290X is a Laptop Graphics Card

    Note: Radeon R9 M290X 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 Radeon R9 M290X here:

    Radeon R9 M290X Laptops

    Main Specs

      GeForce 840A Radeon R9 M290X
    Power consumption (TDP) 33 Watt 100 Watt
    Interface PCIe 3.0 x8 PCIe 3.0 x16
    Supplementary power connectors None
    Memory type DDR3 GDDR5
    Maximum RAM amount 2 GB 4 GB
    Display Connectors No outputs No outputs
      Check Price
    • Radeon R9 M290X has 203% more power consumption, than GeForce 840A.
    • GeForce 840A is connected by PCIe 3.0 x8, and Radeon R9 M290X uses PCIe 3.0 x16 interface.
    • Radeon R9 M290X has 2 GB more memory, than GeForce 840A.
    • GeForce 840A is used in Desktops, and Radeon R9 M290X - in Laptops.
    • GeForce 840A is build with Maxwell architecture, and Radeon R9 M290X - with GCN.
    • Core clock speed of GeForce 840A is 179 MHz higher, than Radeon R9 M290X.
    • GeForce 840A and Radeon R9 M290X are manufactured by 28 nm process technology.
    • Memory clock speed of GeForce 840A is 802 MHz higher, than Radeon R9 M290X.

    Game benchmarks

    high / 1080p 3−4 16−18
    ultra / 1080p 2−3 10−11
    QHD / 1440p 0−1 4−5
    4K / 2160p − 4−5
    low / 720p 14−16 30−35
    medium / 1080p 5−6 20−22
    The average gaming FPS of Radeon R9 M290X in Assassin's Creed Odyssey is 233% more, than GeForce 840A.

    Full Specs

      GeForce 840A Radeon R9 M290X
    Architecture Maxwell GCN
    Code name GM108 Neptune
    Type Desktop Laptop
    Release date 17 March 2014 7 January 2014
    Pipelines 384 1280
    Core clock speed 1029 MHz 850 MHz
    Boost Clock 1124 MHz 900 MHz
    Transistor count 2,800 million
    Manufacturing process technology 28 nm 28 nm
    Texture fill rate 17.98 72.00
    Floating-point performance 863.2 gflops 2,304 gflops
    Memory bus width 64 Bit 256 Bit
    Memory clock speed 2002 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 4.6 4.4
    OpenCL 1.2 Not Listed
    Vulkan 1.1.126
    CUDA 5.0
    FreeSync +
    Bus support PCIe 3.0 x16
    Bitcoin / BTC (SHA256) 300 Mh/s
    Laptop size large
    Eyefinity +
    HD3D +
    PowerTune +
    DualGraphics +
    ZeroCore +
    Switchable graphics +
    Mantle +
    Compute units 20
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