Alienware X51 R2 System Specifications

Alienware X51 R2 System Specifications

Alienware X51 R2 System Specifications

Table of Contents :

  1. System Specifications
  2. Unique Features
  3. Need to Know

This article provides all the technical specifications for the Alienware X51 R1 and X51 R2 systems as well as the supported features and important information

Supported Systems:

Alienware X51 R2

1. System Specifications

4th Generation Intel® Core™ Processors (Haswell)

  • Intel® Core™ i3-4150 (Dual Core, 3MB Cache, 3.5 GHz)
  • Intel® Core™ i5-4430 (Quad Core, 6MB Cache, up to 3.2 GHz w/ Turbo Boost)
  • Intel® Core™ i5-4460 (Quad Core, 6MB Cache, up to 3.4 GHz w/ Turbo Boost)
  • Intel® Core™ i7-4770 (Quad Core, 8MB Cache, up to 3.9 GHz w/ Turbo Boost)
  • Intel® Core™ i7-4790 (Quad Core, 8MB Cache, up to 4.0 GHz w/ Turbo Boost)
  • Intel® Core™ i7-4790K(Quad Core, 8MB Cache, up to 4.4 GHz w/ Turbo Boost)

Intel® H87 Chipset (Intel® DH82H87 PCH)"Shark Bay"

Click here for detailed specifications

NOTE: Some of the features described on the link above have been disabled and are not available on your system due to design and technical limitations.

DDR3 PC3-12800 NON-ECC (1600 MHz)

Minimum: 4Gb
Maximum: 16Gb

2x 240-Pin DDR3 SDRAM Slots for use with the following configurations:

  • 4Gb (2x2 Gb DIMMS)
  • 6Gb (1x2 Gb 1x4GB DIMMS)
  • 8Gb (2x4 Gb DIMMS)
  • 16Gb (2x8 Gb DIMMS)

2x SATA III 6Gb/s Ports

Following configurations can be used:

  • 1x 3.5" SATA I/II/III Hard Drive
  • 2x 2.5" SATA I/II/III Solid State or Regular Drives
NOTE:Single and Dual drive configuration using 2.5" drives requires a special cradle and cable that is not included with the system.

Internal Drive Bay for SATA II Slot-Loading Slim Type (9.5mm) Optical Drive

  • 8x DVD+/-RW drive - Can read/write CD and DVD. Can't read/write Blu-ray Disks
  • 6x DVDRW/BD-ROM drive - Can read/write CD and DVD but can only read Blu-ray Disks.

Realtek Integrated 10/100/1000 Gigabit Network Card

Half mini-PCIe Slot for use with:

  • DW 1506 802.11 b/g/n Wi-Fi Wireless LAN
  • DW 1550 802.11 b/g/n/ac Wi-Fi + Bluetooth Wireless Combo
  • Killer NIC 1420 Wireless LAN (Retired)
  • Killer NIC 1202 Wireless LAN (Retired)
NOTE:Other half mini-PCIe cards can be used in the system. Dell will not support any issues resulting from the use of non-Dell approved hardware.
For more information on your warranty go to

Integrated Realtek ALC892 Codec

  • 5.1/7.1 Support
  • Digital S/PDIF

X51 Audio Ports

1 Rear Left/Right Speakers 2 Center Speaker
3 Line-in 4 Front Left/Right Speakers
5 Microphone port 6 Side Left/Right Speakers

The Alienware X51 R2 supports nVidia Optimus graphics switching technology. This allows the driver to automatically select between your nVIDIA graphics card and the Intel HD Integrated graphics to give you the best performance

Integrated Graphics

Intel HD Integrated Graphics model varies depending on your processor model:

Intel HD 4400

  • Intel® Core™ i3-4150

Intel HD 4600

  • Intel® Core™ i5-4430
  • Intel® Core™ i5-4460
  • Intel® Core™ i7-4770
  • Intel® Core™ i7-4790
  • Intel® Core™ i7-4790K
Important: For the integrated graphics to work you must connect a display to the integrated HMDI port located on the top back part of your system

Discrete Graphics (High Performance)

Supported discrete graphics cards:



  • AMD Radeon™ R9 270/270X

Maximum Graphics Card Dimensions

  • Height: 4.736 inches
  • Length: 9.5 inches
  • Width: Dual Slot

Power Specifications

  • Maximum Graphics Card Power:

    - 175 Watts (330 Watts AC Adapter)
    - 150 Watts (240 Watts AC Adapter)
  • Video Power Connectors: Two 6-pin

X51 Rear Ports

1 Coaxial S/PDIF 2 Network
3 Kensington Lock 4 Discrete Video Card
5 DC Power In 6 Hard Drive Activity LED
7 Audio Jacks 8 USB 3.0 (2)
9 USB 2.0 (2) 10 USB 3.0 (2)
11 HDMI Out 12 Optical S/PDIF port

Dimensions and Weight

  • Height: Front: 13.504" - (343mm) Rear: 12.54" - (318.5mm)
  • Depth: 12.52" - (318mm)
  • Width: 3.74" - (95mm)
  • Starting Weight: 12.1 lbs - (5.49 Kg.)

Motherboard Form Factor

Mini-ITX Motherboard

  • Alienware™ 240 Watt Power Supply (Standard)
  • Alienware™ 330 Watt Power Supply

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2. Unique Features

AlienFX system lighting

Create custom lighting to suit your unique gaming style. Apply 20 different colors to 3 different zones for 8,000 color combinations.


Alienadrenaline Launch games your way with personalized shortcuts in Game Mode, maximize performance with the new Accelerator feature, and keep an eye on resource consumption with Performance Monitoring..


AlienFusion Access your system’s power-management controls so you can decide when you need maximum performance or when to scale back for more everyday programs.

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3. Need to Know

The Alienware X51 R2 has the following display options:

  • Discrete Video Card (High Performance)
  • Integrated Graphics

You can choose which video card you want to use by doing the following:

  1. Turn your system off and then on
  2. When you see the Alienware logo tap F2 until you get the screen below
  3. Navigate to Primary Display under the Advanced tab
  4. Press enter or click on the Primary Display option to change settings

X51 UEFI Settings

  • Auto: The video card will be automatically selected by the driver
  • IGFX: System will work only using the Integrated Graphics Card and HDMI port.
  • Discrete: System will use the discrete video card and the integrated graphics will be disabled.

The Alienware X51 R2 can be kept vertically or horizontally. The Alienhead can rotate accordingly.

Although the system can be kept horizontally, do notkeep the monitor on top of the system since the surface is uneven and the monitor might damage the Side Lighting Board.

X51 Rotation

The Alienware X51 R2 has 3 Lighting zones:

  • Alien Head
  • Left Side Cover
  • Right Side Cover
These Lighting Zones can be controlled through the Alienware Command Center.

NOTE: The power light does not change color, and morph and pulse effects are not available on the X51.

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Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Код статьи: SLN296934

Дата последнего изменения: 07/20/2018 12:50 PM

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