Alienware X51 Gaming Desktop

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    Available with Windows 8 — designed for a smooth, versatile PC experience.
    Alienware X51
    Versatile design. Optimal Performance.
    Whether you choose to display your Alienware X51 vertically on your desk as a token of victory or horizontally to optimize your gaming space, you’ll have more than enough performance to satisfy your gaming needs.
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    Mind-blowing performance, visuals, and sound
    Gaming, movies and other images jump off the screen with the optional powerful NVIDIA® GeForce® GTX 960 graphics card, Full HD, 3D and Blu-ray capabilities of the Alienware X51. For those seeking a system that can handle high-performance video and audio content creation, look no further than Alienware X51.
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    Upgrade and customize your machine
    Play your way, now and in the future. With the ability to upgrade standard desktop components, Alienware X51 is engineered to help you boost your gaming and entertainment experience at any time and dominate games well into the future. For your real-time modifications, Alienware X51 is armed with Wi-Fi and ample front and rear I/O ports (including a total of 8 USB ports ) to provide complete peripheral customization to fit your very own winning strategy. 
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    Alienware X51

    Victory is yours

    The key to any victory is preparation. With the Alienware X51 you can have up to the high performance of 4th Gen Intel® Core™ processors, graphics and storage you need to overwhelm your opponents now and into the future.
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    Gaming and more
    The Alienware X51 is a powerful PC ready to not only take on your fiercest gaming challenges, but whatever else comes your way. Email, shopping and social networking are a breeze on the X51.
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    Ultimate control. All from one place.

    Take control of the game. And feel the intensity. The redesigned Alienware Command Center 4.0 lets you choose lighting and special effects, accelerate your gaming performance, monitor in-game results, and more — all in one hub.

    Complete your Alienware X51 experience

    Your Alienware X51 is just the start. When you buy from Dell, you can get much more than just a gaming system. You can customize an experience that's just right for you.


    At, you'll find a vast arsenal of electronics and accessories designed to enhance your gaming and multimedia experience, including headsets, keyboards and mice. Look for these items at checkout.

    Alienware X51Alienware X51Alienware X51Alienware X51

    Alienware TactX keyboard
    The new Alienware TactX keyboard is packed with the ultimate gaming experience — giving you power and performance at your fingertips.

    Alienware TactX headset
    The new Alienware TactX headset is engineered for high-quality audio performance with custom-engineered soundscape and optimized to single out key in-game sounds.

    Alienware TactX mouse
    The Alienware TactX premium gaming mouse allows you to set up, customize and save macros to the mouse’s on-board memory for true plug-and-play performance.

    Dell UltraSharp monitors
    Award-winning Dell UltraSharp monitors boost your play with vivid color and uncompromised
    performance, perfect for graphics-intensive gaming.

    Alienware Gaming Services

    Alienware Gaming Services puts a team of trained technicians in your corner — gamers who can walk you through installation, setup and more. Our techs can also assist you in customizing, personalizing and optimizing your games to enhance your gaming experience.
    ©2013 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries.

    First generation versus new Alienware X51 gaming performance

    The chart below shows how far the performance has evolved on the Alienware X51 from its first generation launch on January 2012 to the current generation. Using 3DMark 2011 Extreme as a benchmark, you can see how the overall gaming performance has increased by up to 467 percent.

    Previous generations 

    First generation 

     New X51 

    New Alienware X51 

     First generation vs. New Alienware X51 gaming performance

    Overall processor and graphics performance

    We've taken some of the key configurations offered and collected the 3DMark Vantage CPU benchmark scores and 3DMark for Windows Fire Strike scores to show a comparison of how performance increases by configuration with a focus on CPUs and GPUs, respectively.

    Scaled 3DMark Vantage CPU score
    Scaled 3DMark Vantage CPU Score
    Scaled 3DMark for Windows Fire Strike graphics test
    Scaled 3DMark for Windows Fire Strike Graphics Test

    Real-time in-game performance

    Using some of the major titles out there today like Bioshock Infinite and Tomb Raider we were able to use their built-in benchmark tools to measure how many frames per second the Alienware X51 can generate using the key configurations. Even with our lowest end configuration, the Alienware X51 can produce up to 41 frames per second at a resolution of 1920 x 1200.

    Bioshock Infinite graphics settings

      Overall quality (Preset)  Medium
      Texture quality  Normal
      Anti-aliasing  On
      Texture filter  High
      Dynamic shadows  High
      Postprocessing  Normal
      Light shafts  On
      Ambient occlusion  Normal
      Object level of detail  Normal
      VSYNC  Off
      Diffusion  None

    Bioshock Infinite performance in frames per second

    Bioshock Infinite performance in frames per second

    Tomb Raider graphics settings

      Overall quality (Preset) High
      Texture quality High
      Texture filter Anistropic 8x
      Hair quality Normal
      Anti-aliasing FXAA
      Shadows Normal
      Shadow resolution High
      Level of detail High
      Reflections High
      Depth of field Normal
      SSAO Normal
      Postprocessing On
      Tesselation Off
      High precision On
      VSYNC Off

    Tomb Raider performance in frames per second

    Tomb Raider Performance in frames per Second

    Awards & Reviews

    Drivers, Manuals & Support

    Dell Support

    From drivers and manuals to diagnostic tools and replacement parts, Dell Product Support has you covered!

    Intel® Core™ Processors


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