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Windows 10
 
intel® core™ processors

Alienware X51 Gaming Desktop

Undefeated awaits.

Reengineered gaming desktop with Intel® processors, amplified graphics and optional liquid cooling to enable overclocking for powerful, but quiet performance.
Starting at $69999

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“A more powerful, more capable small form factor gaming PC.” — HotHardware.com ​
“The build quality is great and system performs very well at 1080p.” — Wolf's Gaming Blog
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Alienware X51
 

Alienware X51
$699.99


6th Generation Intel® Core™ i3 processor
6th Generation Intel® Core™ i3 processor
Windows 10 Home
Windows 10 Home
8GB Memory
8GB Memory
NVIDIA® GeForce® GTX 745 with 4GB DDR3
NVIDIA® GeForce® GTX 745 with 4GB DDR3

Build the X51 you’ve always wanted! Enjoy 1080p HD Gaming spec'd the way you want it in a chassis size you can fit just about anywhere.
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Dell Price$699.99
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Processor
Intel® Core™ i3-6100 (3MB Cache, 3.7GHz)
Operating System
Windows 10 Home 64bit English
Dell Monitors | #1 Worldwide*
-- Select --
Video Card*
NVIDIA® GeForce® GTX 745 with 4GB DDR3
Alienware Graphics Amplifier
-- Select --
Memory*
8GB Dual Channel DDR4 at 2133Mhz; up to 32GB (additional memory sold separately)
Hard Drive
1TB (64MB Cache) 7200 RPM SATA 6Gb/s
Game Controller
-- Select --
Optical Drive
Slot-Loading Dual Layer DVD Burner (9.5mm)
Wireless
Intel® 3165 1x1 802.11ac Wi-Fi Wireless LAN and Bluetooth
Keyboard
No Keyboard
Mouse
No Mouse
Premium Gaming Keyboard & Mouse
-- Select --
Alienware Gear & Apparel
-- Select --
Office 365
-- Select --
Microsoft Office
Microsoft Office 30 Day Trial
Security Software
No Anti-virus Requested
Add an Alpha for $399
-- Select --
Support*
1 Year Limited Hardware Warranty with Onsite Service after Remote Diagnosis
Accidental Damage Service
-- Select --
Slots
2x DDR4 SDRAM Slots
Ports
Front
2 SuperSpeed USB

Rear
On-board HDMI 1.4 Output
RJ-45 Gigabit Ethernet
2 Hi-Speed USB
2 SuperSpeed USB
2 SuperSpeed USB 10 Gbps
Alienware Graphics Amplifier Port
Dimensions
Height-Front: 13.504" (343mm)
Height-Rear: 12.54" (318.5mm)
Depth: 12.52" (318mm)
Width: 3.74" (95mm)
Starting Weight: 12.1lbs (5.49Kg)*
Regulatory Compliance
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Dell Price$699.99
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Alienware X51
 

Alienware X51
$949.99


6th Generation Intel® Core™ i5 processor
6th Generation Intel® Core™ i5 processor
Windows 10 Home
Windows 10 Home
1TB Hard Drive
1TB Hard Drive
AMD Radeon™ R9 370 with 4GB GDDR5
AMD Radeon™ R9 370 with 4GB GDDR5

Stay on the cutting edge with the new 6th Gen Intel® Core™ i5 processor, Windows 10 Home and the AMD Radeon™ R9 370.​
Market Value*$1,024.99
Total Savings$75.00
ShippingFREE
Dell Price$949.99
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Intel® Core™ i5-6400 (6MB Cache, up to 3.3GHz with Turbo Boost Technology) Includes Hyper-Threading
 
Windows 10 Home 64bit English
 
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AMD Radeon™ R9 370 with 4GB GDDR5
 
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8GB Dual Channel DDR4 at 2133Mhz; up to 32GB (additional memory sold separately)
 
1TB (64MB Cache) 7200 RPM SATA 6Gb/s
 
-- Select --
 
Slot-Loading Dual Layer DVD Burner (9.5mm)
 
Intel® 3165 1x1 802.11ac Wi-Fi Wireless LAN and Bluetooth
 
No Keyboard
 
No Mouse
 
-- Select --
 
-- Select --
 
-- Select --
 
Microsoft Office 30 Day Trial
 
No Anti-virus Requested
 
-- Select --
 
1 Year Limited Hardware Warranty with Onsite Service after Remote Diagnosis
 
-- Select --
 
2x DDR4 SDRAM Slots
 
Front
2 SuperSpeed USB

Rear
On-board HDMI 1.4 Output
RJ-45 Gigabit Ethernet
2 Hi-Speed USB
2 SuperSpeed USB
2 SuperSpeed USB 10 Gbps
Alienware Graphics Amplifier Port
 
Height-Front: 13.504" (343mm)
Height-Rear: 12.54" (318.5mm)
Depth: 12.52" (318mm)
Width: 3.74" (95mm)
Starting Weight: 12.1lbs (5.49Kg)*
 
Market Value*$1,024.99
Total Savings$75.00
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Dell Price$949.99
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Alienware X51
 

Alienware X51
$1,099.99


6th Generation Intel® Core™ i7 processor
6th Generation Intel® Core™ i7 processor
Windows 10 Home
Windows 10 Home
1TB Hard Drive
1TB Hard Drive
NVIDIA® GeForce® GTX 960 with 2GB GDDR5
NVIDIA® GeForce® GTX 960 with 2GB GDDR5

Now with 6th Gen Intel® i7 processing technology and the NVIDIA GeForce® GTX 960 graphics card.
Market Value*$1,249.99
Total Savings$150.00
ShippingFREE
Dell Price$1,099.99
Financing
DFS as low as $33 / mo^ | Apply

Up to $110 backin rewards
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Intel® Core™ i7-6700 (8MB Cache, up to 4.0GHz with Turbo Boost Technology) Includes Hyper-Threading
 
Windows 10 Home 64bit English
 
-- Select --
 
NVIDIA® GeForce® GTX 960 with 2GB GDDR5
 
-- Select --
 
8GB Dual Channel DDR4 at 2133Mhz; up to 32GB (additional memory sold separately)
 
1TB (64MB Cache) 7200 RPM SATA 6Gb/s
 
-- Select --
 
Optical Drive Not included
 
Intel® 3165 1x1 802.11ac Wi-Fi Wireless LAN and Bluetooth
 
No Keyboard
 
No Mouse
 
-- Select --
 
-- Select --
 
-- Select --
 
Microsoft Office 30 Day Trial
 
No Anti-virus Requested
 
-- Select --
 
1 Year Limited Hardware Warranty with Onsite Service after Remote Diagnosis
 
-- Select --
 
2x DDR4 SDRAM Slots
 
Front
2 SuperSpeed USB

Rear
On-board HDMI 1.4 Output
RJ-45 Gigabit Ethernet
2 Hi-Speed USB
2 SuperSpeed USB
2 SuperSpeed USB 10 Gbps
Alienware Graphics Amplifier Port
 
Height-Front: 13.504" (343mm)
Height-Rear: 12.54" (318.5mm)
Depth: 12.52" (318mm)
Width: 3.74" (95mm)
Starting Weight: 12.1lbs (5.49Kg)*
 
Market Value*$1,249.99
Total Savings$150.00
ShippingFREE
Dell Price$1,099.99
Financing
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Alienware X51
 Overclocked Intel® Core™ i5 K-Series Quad-Core

Alienware X51
$1,499.99


6th Generation Intel® Core™ i5 processor
6th Generation Intel® Core™ i5 processor
Windows 10 Home
Windows 10 Home
16GB Memory
16GB Memory
NVIDIA® GeForce® GTX 960 with 2GB GDDR5
NVIDIA® GeForce® GTX 960 with 2GB GDDR5

Includes an upgraded and unlocked Intel® Core™ i5 K-Series processor, Windows 10 and the NVIDIA GeForce® GTX 960 graphics card. Also includes Liquid Cooling to keep you cool under pressure.
Market Value*$1,788.99
Total Savings$289.00
ShippingFREE
Dell Price$1,499.99
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DFS as low as $45 / mo^ | Apply

Up to $150 backin rewards
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Intel® Core™ i5-6600K (6MB Cache, Overclocked up to 4.3GHz)
Windows 10 Home 64bit English
-- Select --
NVIDIA® GeForce® GTX 960 with 2GB GDDR5
-- Select --
16GB Dual Channel DDR4 at 2133MHz; up to 32GB (additional memory sold separately)
256GB PCIe SSD (Boot) + 2TB (64MB Cache) 7200RPM SATA 6Gb/s
-- Select --
Optical Drive Not included
Intel® 3165 1x1 802.11ac Wi-Fi Wireless LAN and Bluetooth
No Keyboard
No Mouse
-- Select --
-- Select --
-- Select --
Microsoft Office 30 Day Trial
No Anti-virus Requested
-- Select --
1 Year Premium Support
-- Select --
2x DDR4 SDRAM Slots
Front
2 SuperSpeed USB

Rear
On-board HDMI 1.4 Output
RJ-45 Gigabit Ethernet
2 Hi-Speed USB
2 SuperSpeed USB
2 SuperSpeed USB 10 Gbps
Alienware Graphics Amplifier Port
Height-Front: 13.504" (343mm)
Height-Rear: 12.54" (318.5mm)
Depth: 12.52" (318mm)
Width: 3.74" (95mm)
Starting Weight: 12.1lbs (5.49Kg)*
Market Value*$1,788.99
Total Savings$289.00
ShippingFREE
Dell Price$1,499.99
Financing
DFS as low as $45 / mo^ | Apply

Up to $150 backin rewards
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Features & Design

Alienware recommends Windows 10 Pro.
alienware
Leading the way in immersive gaming.
Alienware’s X51 comes VR ready so you can experience the power and immersion of virtual reality gaming. Leading the way in innovation, these award winning systems use the latest technology, meeting the recommended spec for the Oculus Rift Headset and driving high performance gaming in both VR and traditional PC gaming. With an Alienware VR capable PC, you can be among the first to experience the future of gaming with a system ready to take you to the next level.
Pro-level gaming
Pro-level gaming
You know X51. You’ve seen it at eSports tournaments and events. The stakes are high and the new X51 will make you better equipped to compete. But you don’t have to be front and center at a tournament to experience the size and performance of X51. Now you can play like the pros – straight from your home base.
Choose cutting-edge liquid cooling
Choose cutting-edge liquid cooling
Add some edge to your game with optional Alienware SFF Advanced Liquid Cooling to enable CPU overclocking, a first for X51. Expect incredibly quiet, but powerful performance when you need it most. A low profile and compact blower design pushes heat outside the rear of the chassis, and a copper cold plate ensures efficient heat transfer. Plus, all units are 100% leak and weight tested to meet quality requirements.
Get into 4k gaming
Get into 4k gaming
Turbocharge your gaming with the optional Alienware Graphics Amplifier. With advanced NVIDIA® or AMD-enabled graphics, you can enable support for Ultra HD 4K gaming for immersive 3840x2160 resolution. That’s four times the resolution of 1080p.

When you add the graphics amplifier to the compact X51, you’ll have more options when it comes to arranging your desk. You don’t need much space, so you can place this duo where you want it.

Even without the amplifier, X51 delivers exceptional gaming performance at 1080p and supports up to an NVIDIA® GeForce® GTX 960 graphics card. The amp is also compatible with Alienware laptops.
Overclocked performance
Overclocked performance
The new X51 is outfitted with quad-core 6th Gen Intel® Core™ processors and features unlocked K-series processors that enable additional overclocking features so they can be tweaked to boost performance. Our highest-end processor will deliver an overclock of up to 4.4GHz.

With Turbo Boost Technology, your processor runs faster when you need it to and saves battery when you don’t. And Hyper-Threading Technology increases performance on multi-threaded tasks so you can run various programs more smoothly. The X51’s entire engine has been overhauled since the last generation, now built on a foundation that’s based on the Intel Z170 Chipset and the latest DDR4 memory.
Fast PCIe SSDs and substantial storage
Fast PCIe SSDs and substantial storage.
We’ve added more storage options without sacrificing performance or increasing X51’s size so there’s plenty of room to archive games, tunes and more. The new X51 supports M.2 PCIe SSDs with a connector positioned alongside the frame that holds the graphics card. Though the drive is positioned on the assembly holding the GPU, it has its own dedicated data connection, eliminating performance sharing or loss. And you never have to worry about electrical interference.

And with PCIe SSDs, all those games, tunes and other media you love will load way faster with up to 4GB/s of total bandwidth
Quick connections
Quick connections
Alienware wants to ensure that you win, and with 802.11ac2x2 WiFi, you can connect quickly to download faster, stream easily, and enjoy smoother overall gaming. X51 also includes a Gigabit Ethernet port for maximum networking performance.
Ports for all your peripherals
Ports for all your peripherals
Manage all your peripherals with more freedom thanks to a built-in USB hub, where everything’s connected to one, main unit. X51 has 8 total USB ports: 2x SuperSpeed USB in the front, 2x each on the back, a Hi-Speed USB, SuperSpeed USB, and SuperSpeed USB 10 Gbps.

1. HDMI 1.4 Output | 2. SuperSpeed USB | 3. Hi-Speed USB | 4. RJ-45 Gigabit Ethernet | 5. Alienware Graphics Amplifier Port | 6. SuperSpeed USB 10 Gbps | 7. Front Speaker Input | 8. Side Speaker Input | 9. AC Power Input | 10. Center/Subwoofer Speaker Input | 11. SuperSpeed USB | 12. Microphone In | 13. Headphone Out
Versatile design
Versatile design
Key components – including the GPU, CPU, memory and hard drive – are easy to access on the Alienware X51, so you can upgrade your arsenal easily. Besides the chassis, your processors, graphics card, memory, wireless controller and hard drives are all upgradeable to support future expansion. Plus, you can maximize your space with dual orientation for vertical or horizontal configuration.

Front-Height: 13.504" - (343mm) | Rear-Height: 12.54" - (318.5mm) | Depth: 12.52" - (318mm) | Width: 3.74" - (95mm) | Starting Weight: 12.1 lbs - (5.49 Kg.)
Win with Windows 10
Win with Windows 10
DirectX 12: Break down boundaries and step into your game with graphics more stunning than ever before with the new DirectX 12 technology. Windows 10’s API is armed with new features that will provide quicker processing in real time to generate higher FPS and richer graphics as well as reduced power consumption to play longer.

Expand your community: Xbox app lets you see what your friends are playing now, chat with your community, and track your scores and achievements. Plus, Game DVR* lets you record your best hero moves for sharing with friends.

Play more games: The greatest Xbox games are now at your fingertips, and you will get built-in support for the Xbox controller and even stream Xbox One games to a Windows 10 PC, laptop, or tablet anywhere in your home. Even the cross-device barriers are down – start a game on your PC and move to your Xbox to continue playing.

Start menu – back and improved: You will game like an expert from the get-go since your Windows Start menu is back in an expanded form. Plus, all your pinned applications will carry over so your experience is familiar, productive and better than ever.

The speed you need: Windows 10 starts up and resumes fast so there’s no buffer between you and your game. Even your updates reach you as soon as they are available so you always have the latest and greatest features.
Command Center 4.0
Control your Alienware PC and Graphics Amplifier’s performance with fine-tuned adjustability.
  • AlienFX  
    AlienFX
    Alienware X51 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 movie in real time. Set triggers. Make your system glow and blink. Morph your lights from one color to the next. The choice is yours.
  • AlienAdrenaline  
    AlienAdrenaline
    Automatically load your pre-chosen display settings, alter video card performance options, and adjust GPU and memory clocks to get optimum performance from your PC and Graphics Amplifier. Now you can also monitor your optional Alienware Graphics Amplifier’s connected status as well as your overclocked settings via AlienAdrenaline.
  • AlienFusion  
    AlienFusion
    Manage all of your PC’s power with one easy program. Alter your settings – extend battery life by dimming lights across separate areas, activating hibernation options or shutting down easily. It’s all under your control.
Peace of mind comes standard.
Alien Autopsy comes preinstalled on all new Alienware devices and provides:

 • Advice and alerts to let you know about issues before they happen and tools to fix issues if they arise
 • Flexible, automated backup and recovery through Alienware Respawn to ensure that your important documents, pictures and media files remain safe
 • Easy access to Dell support, warranty information and services, saving time and reducing hassle
 

Accessories & Services

Essential accessories for your Alienware X51
Essential accessories for your Alienware X51
Complete your Alienware purchase with the Alienware Graphics Amplifier, gaming headsets, a wireless touch keyboard and more. Look for these great products and more at checkout.
Alienware Graphics Amplifier
Alienware Graphics Amplifier
Enjoy an ultimate at-home experience with up to 4K graphics and dual-monitor display.

View Details
Dell 27 Monitor - S2716DG
Dell 27 Monitor - S2716DG
Immerse yourself in stunning edge-to-edge gameplay with this 27”monitor for serious gamers.

View Details
Roccat Isku FX Gaming Keyboard
Roccat Isku FX Gaming Keyboard In-Game AlienFX™ Enabled
Hunt for prey not for keys with the Roccat Isku FX and its 3 zones for key duplication via Easy-Shift[+]™ and 36 ideally-placed macro keys + 3 thumbster keys.

View Details
Roccat Kone XTD Mouse
Roccat Kone XTD Mouse
Armed with the 8200 DPI Pro-Aim R3 Laser Sensor, the Easy-Shift[+]™ technology and four easy-to-clip-in, 5-gram weights, you’ll be the master of precision.

View Details
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.
Look for these additional services at checkout
Alienware Product Support
Your Alienware system includes Onsite Service after remote diagnosis*. Better protection for your investment is available when you upgrade your coverage to Dell Premium Support with 24X7 access to dedicated Alienware advanced support technicians for hardware and software assistance, automatic detection and alerts for PC issues*  and, exclusively for Alienware systems, in-game repairs and troubleshooting .

Dell Accidental Damage Service*
Accidents happen – Dell can help. Minimize the unplanned expenses and downtime by protecting against unforeseen mishaps caused by drops, spills, surges and breaks. Accidental Damage Service can provide repair or replacement of your system for accidents up to 3 years, not otherwise covered by the Limited Hardware Warranty*.
 

Ratings & Reviews

Alienware X51 R3: Recommended

“It’s an impressive system that’s been built with all the care and attention I would expect from an experienced company.”                    — Wolf's Gaming Blog

Read Review
Alienware X51 R3: Recommended

“Offering a more powerful, more capable small form factor gaming PC that's every bit as quiet as its predecessor.” — HotHardware.com

Read Review
 

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