Orders placed after 4pm on weekdays will not ship until the next business day. Orders placed after 12pm Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
Designed for gamers, the Dell Alienware X51 R3 Gaming Desktop Computer features a matte stealth black finish and dark chrome accents. The system features a dedicated NVIDIA GeForce GTX 745 graphics card with 4GB of DDR3 discrete memory, which provides high-res graphics for your PC games.
The system is powered by a 6th-gen Skylake 2.6 GHz Intel Core i7-6700HQ quad-core processor. The processor is supported with 8GB of 2133 MHz DDR4 RAM to streamline multitasking. The SuperMulti DVD burner makes it easy to install PC games while the 1TB 7200 rpm hard drive ensures you have enough space for all your media files.
For online multiplayer games, you'll need a stable connection to the Internet. This Alienware desktop computer provides a 10/100/1000 Mbps Gigabit Ethernet LAN jack for a fast wired connection. However, you can also go wireless with 802.11ac Wi-Fi. Bluetooth technology allows you to connect all your favorite peripherals, such as a gaming mouse or joystick.
The Alienware X51 houses a 6th-generation Skylake Intel Core i7-6700HQ processor. Its quad cores can reach a stock speed of 2.6 GHz. The processor can also be boosted up to 3.5 GHz, thanks to Intel Turbo Boost 2.0 technology. Additionally, it features 6MB of L3 cache as well as Hyper-Threading technology, which enhances the cores.
NVIDIA GeForce GTX 745 Graphics
The dedicated NVIDIA GeForce GTX 745 graphics card provides two anti-aliasing modes, NVIDIA FXXA and TXAA. Anti-aliasing smoothes out jagged edges, but can be demanding on frame rates. Fast Approximate Anti-Aliasing (FXAA) produces smooth lines with minimal performance impact. The second mode, Temporal Anti-Aliasing (TXAA), is an in-game option that combines Multisample Anti-Aliasing (MSAA), temporal filtering, and post processing for even higher visual fidelity. The GTX 745 also supports NVIDIA PhysX technology, NVIDIA Adaptive Vertical Sync, NVIDIA 3D Vision, and NVIDIA G-SYNC technology.
AlienWare Graphics Amplifier Port
The Alienware Graphics Amplifier port can be used to connect the separately-sold Alienware Graphics Amplifier to your Alienware X51 R3. Using the Graphics Amplifier, you will be able to support a full-length, double-wide, desktop graphics card. The Graphics Amplifier connects via a single cable enabling the PCI-Express graphics card connection as well as your four USB 3.0 ports to be connected with less clutter and simple connectivity.
Alienware Command Center 4.0
Alienware X51 R3 offers up to 8,000 possible accent lighting color combinations. Program them yourself or enable one of the many games with the AlienFX API to do it for you. The lighting is designed to react to your every move in real time. Set triggers. Make your system glow and blink. Morph your lights from one color to the next.
SuperMulti DVD Burner
The Dell Alienware X51 R3 can read and write CDs and DVDs.
The Dell Alienware X51 R3 comes with an Alienware multimedia USB keyboard and an optical USB mouse so you can start gaming as soon as set your computer (a monitor is sold separately).
After its hiatus in Windows 8, the Start Menu has returned. Utilizing a combination of the traditional menu system and Windows 8's Live Tiles, the improved Start Menu gives you more information at a glance, showing notification information alongside your applications and other pinned items.
Microsoft's digital personal assistant, Cortana can answer your questions with information gleaned from both your device and the internet at large. You can type or even talk with her, if your system has a microphone. Using her Notebook, Cortana keeps track of your needs and wants, and she learns over time to improve her information gathering skills.
After nearly 20 years, Microsoft has finally replaced its Internet Explorer web browser. With it, users can write directly on web pages and share notes with friends and colleagues. It also improves the online reading experience by adding a distraction-free mode and read-it-later functionality. Edge also has built-in Cortana integration; you can have her help you find a restaurant, make a reservation, and pull up directions without leaving your browser.
For Windows 10, Microsoft has unified the Windows Store. Now, apps for PCs, tablets, and phones will all be accessible from one place. And with support for Universal Apps, one version of an app can work across all your compatible devices automatically.
Windows 10 was designed for a variety of screen sizes and input styles, and with its Continuum feature, it automatically adapts to fit your needs. A Windows 10 tablet on its own requires a touch-centric approach, but attaching a mouse and keyboard will shift everything to a more traditional interface. You can even attach an external monitor to your Windows 10 phone for a near-desktop experience. But it's not just the operating system; Windows Universal Apps take advantage of Continuum as well.
Xbox on Windows 10
Gaming is a big focus of Windows 10. Xbox integration allows for PC players to match up against Xbox One players on supported games, and if you have an Xbox One, you can even stream compatible titles to your PC. Native support for recording with the new Game DVR feature makes it easy to capture and share your gameplay. The new DirectX12 takes better advantage of multi-core processors, giving games a performance boost, even on older hardware. Windows 10 also features native support for virtual reality headsets, such as the Oculus Rift.