Alienware X51 R2 Desktop Computer - Intel Core i7 (4th Gen) i7-4790 3.60 GHz - 16 GB - 1 TB HDD - 256 GB SSD - Windows 8.1 64-bit (English) - Matte Stealth Black, Dark Chrome Accent

With Windows 8.1 - 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.

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.

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.

Victory is yours

The key to any victory is preparation. With the Alienware X51, you can now play any game you want with the high-performance 4th Gen Intel® Core™ processors, powerful graphics up to 175 W, PCI-Express x16, and storage you need to overwhelm your opponents now and into the future.

The optional GeForce® GTX™ 960 delivers incredible performance, power efficiency, and cutting-edge gaming technologies that only NVIDIA Maxwell™ technology can offer. This is the perfect upgrade to advanced gaming, letting you dominate the competition with 60% faster performance and twice the power efficiency than previous-generation cards.

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.

Bring your Alienware X51 to life with AlienFX™ and experience another level of immersion with Alienware's exclusive in-game lighting technology that provides lighting effects to alert gamers of specific in-game events and special effects. 100+ games and apps support AlienFX™ today.

Advance in your journey with confidence when equipped with the Alienware X51 and its perfect balance of high performance and compact size.

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.

First generation vs. New Alienware X51 Gaming Performance

The chart above 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%.

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.