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Available with Windows 8 — designed for a smooth, versatile PC experience.
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. Find Out More
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. Find Out More
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. Find Out More
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. Find Out More
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. Find Out More
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 Dell.com, 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 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.
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.
New Alienware X51
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 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)
Object level of detail
Bioshock Infinite performance in frames per second
Tomb Raider graphics settings
Overall quality (Preset)
Level of detail
Depth of field
Tomb Raider performance in frames per second
Editor's Choice – 4/5 Stars
“The Alienware X51 R2 delivers a premium gaming experience in a compact design that's both stylish and well-suited for the living room.” Read Article ›
Awards & Reviews
Alienware X51 R2: Editors´ Choice
“You'd be hard-pressed to find a better balance of convenience, performance and affordability than what the Alienware X51 delivers.” — Tom´s Guide