Close

Loading image...
Alienware X51
9 Images + 43 Videos

Alienware X51 4 Core Intel Core I7-4xxx 3.4GHz 8GB 1TB HDD

PC Mag Editor's Choice Digital Versus 5 Star hothardware.com Editor's Choice tomsguide.com Editor's Choice PC Advisor.co.uk Recommended
4 Intel Core I7-4xxx 3.4GHz 8GB Jun 2014
Processor Core Processor Family Processor Clock Speed Internal Memory Release Date
Easily bring high performance PC gaming into any room in your house. Whether you re connected to a monitor or an HDTV, the versatile Alienware X51 lets you experience big-screen gaming wherever... More
Available from international sellers only
Tell Me When It Becomes Available
You are subscribed to price alerts for this product
Unsubscribe
Searching for international prices ...

Assumed Exchange Rates

Searching for prices in ...
ALIENS IN MY LIVINGROOM! - Alienware X51 Unboxing & Setup! (1080p)
TmarTn's Introduction to PC Gaming!! (Battlefield 3 on Alienware X51)
Alienware X51 Small Form Factor Gaming PC Review
Alienware X51 Review

17 Reasons For

64-Bit Processor Operating Mode

This PC supports a 64-bit processor operating mode, which is the most commonly supported processor operating mode on personal computers of this age and spec.

Chart Edit

Eight USB 3.0 (3.1 Gen 1) Type-A Ports

The Alienware X51 is a eight USB 3.0 (3.1 Gen 1) Type-A port desktop computer.

Chart Edit

Fairly Fast On-Board Graphics Adapter Dynamic Frequency

Desktop computers of this age and type have on-board graphics adapter dynamic frequencies of between 850MHz and 860,000MHz, and the average on-board graphics adapter dynamic frequency is 3,200MHz. At 1,200 megahertz, the Alienware X51 has a quite fast on-board graphics adapter dynamic frequency compared to most of the other desktop computers that have been around for around the same time as the X51.

Chart Edit

11 On-Board Graphics Adapter DirectX Version

This desktop computer supports a 11.1 on-board graphics adapter DirectX version, which is the most frequently supported on-board graphics adapter DirectX version on computers of this type and age.

Chart Edit

Quite Big Hard Drive Capacity

The hard drive capacity of medium processor core personal computers that came out around the same time as the X51 range from 320GB to 3TB, and the average hard drive capacity is 800GB. At 1,000 gigabyte, the Alienware X51 has a quite big hard drive capacity compared to most of the other comparable spec PCs that have been available for around the same time as the X51.

If you would prefer a desktop computer with a bigger hard drive capacity then you might also want to look at the Lenovo E32 (£1,666.80) (2TB), or the Alienware X51 (2TB).

Read more Less Chart Edit

10/100/1000Base-T(X) Cabling Technology

This computer has a 10/100/1000Base-T(X) cabling technology, which is typical of many personal computers of this age and spec.

Chart Edit

3 PCI Express Slots Version

This PC supports a 3 PCI Express slots version, which is the most frequently supported PCI Express slots version on desktop computers of a comparable age and spec to it.

Chart Edit

L3 Processor Cache Level

This personal computer has a L3 processor cache level, which is typical of many comparable spec PCs that have been around for around the same time as it.

Chart Edit

Six USB 3.0 Ports

Most medium processor core personal computers that have been around for around the same time as the X51 have between one and eight USB 3.0 ports, including the Alienware X51 which has six USB 3.0 ports.

Chart Edit

Eight Processor Threads

The Alienware X51 has more processor threads than most of the personal computers of a comparable type and age to the X51. Most of the computers of a similar type and age to the X51 only have between four and seven processor threads, however this computer has eight processor threads.

Chart Edit

Fairly Big L3 Cache

At 8 megabytes, the Alienware X51 has a quite big L3 cache compared to most of the other comparable spec computers that have been around for around the same time as the X51. The smallest L3 cache of medium processor core personal computers that have been on the market for around the same time as the X51 is 2MB, the biggest is 10MB, and the average L3 cache is 6.9MB.

Chart Edit

7.1 Audio Output Channel

The Alienware X51 has a better audio output than most desktop computers of this spec and age. This Alienware PC has a 7.1 audio output channel, whereas most medium processor core personal computers that came out around the same time as it have a 5.1 audio output channel.

A 7.1 audio output channel is actually the best audio output amongst all desktop computers of a comparable spec and age to the X51.

Amongst similar types of desktop computer the worst audio output is 5.1.

Read more Less Chart Edit

Has One Cable Included

The Alienware X51 has a greater number of included cables than most PCs of a similar spec and age to it. This Alienware desktop computer has an AC cable included, which is the most commonly found cable included found on desktop computers of this spec and age.

Chart Edit

DVD Super Multi Optical Drive Type

The optical drive type of this PC is DVD Super Multi DL, which is typical of many similar spec PCs that were released around the same time as it.

Chart Edit

GDDR Discrete Graphics Memory Type

This personal computer supports a GDDR5 discrete graphics memory type, which is typical of many computers of this age and type.

Chart Edit

Light

The weights of PCs of this spec and age range from 250g to 24kg, and the average weight is 8.2kg. With a weight of only 5.5 kilograms, the Alienware X51 is one of the lighter similar spec desktop computers that have been on the market for a comparable time to the X51 amongst medium processor core personal computers of this age.

Chart Edit

Very Narrow

The average width of medium processor core personal computers that came out more than two years ago is 190mm, and the widths range from 33mm to 490mm. At only 95 millimeters, the Alienware X51 is quite narrow compared to most of the other desktop computers that were released more than two years ago.

Chart Edit

4 Reasons Against

Unexceptional Brand

Alienware has good reviews for its medium processor core personal computers, however it has unexceptional average reviews when measured across its entire computer range.

Only HDD Storage Medium

The storage speed of this computer is HDD, which is the most commonly found storage medium on desktop computers that have been available for more than two years. A Hard Disk Drive (HDD) is the traditional storage method for computers. A HDD stores the information on magnetic disks. HDD drives are cheap, but they are slower than Flash and SSD bases storage systems.

Chart Edit

Very Slow Processor Front Side Bus

The average processor front side bus of computers of a similar type and age to the X51 is 1,300MHz, and the processor front side buses range from 530MHz to 1,600MHz. The Alienware X51 has a quite slow processor front side bus (only 533 megahertz) compared to most of the other personal computers that have been around for a similar time to the X51.

Chart Edit

Only Has One Memory Slot

The number of memory slots found on the Alienware X51 is more than most PCs of a comparable spec and age to it. The most frequently found memory slot is 4x DIMM, but this memory slot is not found on this desktop computer. The memory slots 2x DIMM are also found on this personal computer.

Chart Edit

4 Other reasons to consider the Alienware X51

Released Over Two Years Ago

This PC has been on the market for over two years.

Average Processor Clock Speed

With a processor clock speed of 3.4 gigahertz, the Alienware X51 has a pretty typical processor clock speed compared to most of the other medium processor core personal computers that have been on the market for around the same time as the X51.

Chart Edit

Average Total Storage Capacity

The Alienware X51 has a relatively average total storage capacity (1,000 gigabyte) compared to most of the other PCs of a comparable age and type to the X51.

If you are looking for a bigger total storage capacity then you might want to look at the Lenovo E32 (£1,666.80) (2TB).

Read more Less Chart Edit

Average Internal Memory

With an internal memory of 8 gigabytes, the Alienware X51 has a pretty typical internal memory compared to most of the other personal computers of this type and age.

If you want a bigger internal memory then you might want to look at the Apple Mac Pro (12GB).

Read more Less Chart Edit

Specification

Features
Processor
Processor Core
Processor Family
Processor Clock Speed
PCI Express Slots Version
Processor Thread
Processor Cache
Processor Socket
Maximum Turbo Frequency
Processor Model
Memory Channel Supported Processor
Max Memory Bandwidth Supported Processor
Memory Clock Speed Supported by Processor
Memory Type Supported Processor
Max Internal Memory Supported Processor
Conflict Free Processor
Processor Series
Tcase
PCI Express Lane (maximum)
Stepping
QPI Link
Processor Operating Mode
PCI Express Configuration
Processor Codename
Processor Lithography
Thermal Design Power (TDP)
Bus Type
Processor Cache Type
Processor Installed
Ergonomics
Memory
Internal Memory
Non-ECC Memory
Memory Clock Speed
Memory Slot
Maximum Internal Memory
Internal Memory Type
Storage
Total Storage Capacity
Storage Medium
Hard Drive Capacity
Hard Drive Speed
Hard Drive Interface
Hard Drive
Storage Drive Installed
Integrated Card Reader
Optical Drive
Optical Drive
Optical Drive Type
Video
Graphics
On-Board Graphics Adapter Model
Discrete Graphics Adapter
Discrete Graphics Memory Type
Discrete Graphics Adapter Model
Discrete Graphics Adapter Memory
On-Board Graphics Adapter ID
On-Board Graphics Adapter DirectX Version
On-Board Graphics Adapter Dynamic Frequency
On-Board Graphics Adapter Base Frequency
Displayssupported by On-Board Grap
Maximum On-Board Graphics Adapter Memory
Operating System/software
Operating System
Operating System Architecture
Networking
Bluetooth Version
Bluetooth
WiFi Standard
WiFi
Cabling Technology
Ethernet LAN Data Rate
Ethernet LAN Connection
Ports & Interfaces
S/PDIF Out Port
Headphone Out Port
Microphone in Port
Line-Out Port
Line-In Port
Ethernet LAN (RJ-45) Port
HDMI Port
DVI Port
USB 2.0 Port
USB 3.0 (3.1 Gen 1) Type-A Port
Expansion Slots
Design
Chassis Type
Case Placement
Case Colour
Water Cooling System
Performance
Password Protection
Audio Output Channel
Audio System
Motherboard Chipset
Product Type
Processor Special Features
Intel Anti-Theft Technology
Intell Identity Protection Technology
Intel My WiFi Technology
Intel Quick Sync Videotechnology
Intel Hyper-Threading Technology
Intel Smart Connect Technology
Intel Turbo Boost Technology
Intel Smart Response Technology
Intel VPro Technology
Intel Wireless Display (WiDi) Technology
Intel 64
Enhanced Intel SpeedStep Technology
Intel Rapid Start Technology
Intel Small Business Advantage (SBA)
Intel Secure Key
Intel AES New Instructions
Intel FDI Technology
Intel TSX-NI
Idle States
Intel Insider
Intel Clear Video HD Technology
Thermal Monitoring Technology
Execute Disable Bit
Intel InTru 3D Technology
Intel Trusted Execution Technology
Intel VT-X With Extended Page Tables (EPT)
Intel Virtualization Technology (VT-X)
Instruction Set
Intel Enhanced Halt State
Processor Code
Scalability
Intel Small Business Advantage (SBA) Version
Intel Virtualization Technology for Directed I/O
Thermal Solution Specification
Processor Package Size
CPU Configuration (max)
Intel Identity Protection Technology Version
Intel Stable Image Platform Program (SIPP) Version
Graphics & IMC Lithography
Intel Smart Cache
Intel Secure Key Technology Version
Processor ARK ID
Display
Power
Power Supply Input Voltage
Power Supply Input Frequency
Weight & Dimensions
Weight
Height
Depth
Width
Operational Conditions
Storage Temperature Range
Non-Operating Altitude
Operating Altitude
Relative Humidity Operating Range
Operating Temperature Range
Certificates
Packaging Content
Manual
Cable Included
Display Included
AC Adapter
Other Features
Intel Virtualization Technology
Technical Details
Technical Details
Management Features

13 Awards

pcactual.com Recommended Les Numeriques.com 5 Star computershopper.com Editor's Choice hardwareheaven.com Recommended CNET.co.uk Editor's Choice kitguru.net Worth Buying Digitaltrends.com Recommended Product PC Mag Editor's Choice Digital Versus 5 Star 01net.com 5 Star hothardware.com Editor's Choice tomsguide.com Editor's Choice PC Advisor.co.uk Recommended

Expert Reviews

(70)
10 July 2016

What is the Alienware X51? Alienware is one of the strongest global brands of gaming PCs, with a range that now stretches to multiple mobile and desktop form factors. While many gaming PCs come in... Read more…

7 January 2016

Alienware's latest X51 gaming PC would not look out of place in an office. Yes, it still has the brand's distinctive alien head logo on the front, but the company shows uncharacteristic restraint... Read more…

6 January 2016

Alienware's latest X51 gaming PC would not look out of place in an office.Yes, it still has the brand's distinctive alien head logo on the front, but the company shows uncharacteristic restraint... Read more…

Stylis, compact design
Strong graphics performance
Relatively affordable
Useful personalization software
Slick, illuminated design
Doesn't support highest-end graphics cards
Not really suitable for more than 1080p
No SSD
High processor temperature
Relatively expensive
9 September 2015

The last time we looked at Dell's Alienware X51 series of console-sized gaming PCs was back in mid-2013. Back then we were working with Intel's 4th generation Haswell Core Series processors and... Read more…

28 August 2015

With a 6th generation Intel chips in tow, the revamped Alienware X51 has all the makings of a petite powerhouse. It's not without its shortcomings, but smart additions, like a M.2 PCIe slot and...

New Skylake processors
Space for SSD
Alienware Graphics Amplifier expansion
Reasonably priced
Small footprint
Proprietary motherboard
Tough to upgrade
Not the most powerful ITX system
No room for expansion
Does not include keyboard or mouse
« Prev 1 of 14 Next »

User Reviews

(11)
Reviewed 9 November 2011 by Kyle

Ok so 40Gb might not be a huge amount of space this day and age but for use as a boot hard disk it's perfect and my system has never been as quick as this before. Fantastic price, fantastic... Read more…

Very good price
Very easy to setup. Attach stand with thumbscrew , connect power cable, keyboard mouse. .. done
Big 1080p touchscreen, it looks like a TV display
Good way of introducing Windows 8 to users
Space saving design and light
Could become sluggish when pushed to its limits. But for the intended use (kids PC) is more than enough
Lack of USB 3.0
I would have liked an HDMI in
1 MP webcam. An extra megapixel would have help a lot
I would gladly pay not to have McAfee (McRappy) bundled

Alienware... Just buy all the parts on its own and pay someone to build it. save $$$...

Reviewed 27 September 2016 by Greased Lizard

Wouldn't touch this with a bargepole to be honest. It used to be that Alienware were the mutts nuts, not so much these days. The price tag is exceptionally high for a 2gb 960, and what's with only... Read more…

Reviewed 31 August 2016 by N RHODES | 11 Comments
(Verified Purchase)

Nothing wrong with the PC to be fair, however you couldn't upgrade the video card to the latest 1080 models.

Reviewed 26 July 2016 by Amazon Customer

For the people who said the graphics were bad when you were gaming, it could of been your monitor, not the PC. However, that's for you to decide upon.

« Prev 1 of 3 Next »

Brochures and Manuals

+- Manufacturer's Description

Product Identifiers

Manufacturer Part Numbers ax51r25743bk, alienware win10, dell ax51r33011, dell ax51r33011b, alienware win10b, alienware win10bl, dell ax51r33011bl, dell ax51r33011blk, alienware win10bla, alienware win10blac, alienware win10black, alienware ax51r36310, alienware ax51r36310b, alienware ax51r36310bl, alienware ax51r36310blk, alienware alienwarex51r304, alienware alienwarex51r304s, alienware alienwarex51r304sa
Barcodes 00001474426912, 00750253256937, 00750253271572, 00884116132523, 00884116146285, 00884116205920, 00884116217114

Save Money with These Great PC Vouchers & Offers

£25 Off
Voucher
£25 Off all Apple Macs over £350
Valid 20 Apr 16 - 21 Apr 17
£10 Off
Voucher
£10 Off when you spend £100
Valid 23 Sep 16 - 31 Dec 16
8% Off
Voucher
8% Off Computers and Networking
Valid 5 Aug 16 - 30 Dec 16
£25 Off
Voucher
£25 Off Apple Mac orders over £350
Valid 25 Apr 16 - 25 Apr 17

See How Other PCs Compare to the Alienware X51

Apple Mac Pro vs Alienware X51

Apple Mac Pro vs Alienware X51
Apple Mac Pro
4 core Intel Xeon E5 3.7GHz 12GB 512GB Flash
Alienware X51
4 core Intel Core i7-4xxx 3.4GHz 8GB 1TB HDD
£
User Reviews Are Better
Significantly Shallower
Bigger Max Internal Memory Supported Processor
Appreciably Better Review from Computershopper.com
Hugely Worse Review from "Expert Reviews"
Hugely Worse Review from PC Advisor.co.uk

Fujitsu Esprimo P420 vs Alienware X51

Fujitsu Esprimo P420 vs Alienware X51
Fujitsu Esprimo P420
4 core Intel Core i7-4xxx 3.4GHz
Alienware X51
4 core Intel Core i7-4xxx 3.4GHz 8GB 1TB HDD
£ 365.00
Three Months Newer
Display Included
Only Two USB 3.0 (3.1 Gen 1) Type-A Ports
Only One Headphone Out Port
Feedback