Alienware X51 vs. Fujitsu Esprimo D756

Comparison and Differences

Alienware_X51.jpg case front and back pannelFujitsu_Esprimo_D756.jpg case front and back pannel
Model
Form factorSmall GamingSmall
CPU optionsIntel Gen2&3 i3/i5/i7;Intel Gen6 i3/i5/i7; Pentium; Celeron
ChipsetH61Q150
Dedicated GPU *GeForce GTX 1650 SuperRadeon RX 6400 Low Profile
RAMDIMM DDR3-1333UDIMM DDR4-2133
RAM slots24
RAM speed1333 MT/s2133 MT/s
RAM max8 GB64 GB
USB ports(2x) USB 3.0 Type A; (6x) USB-A 2.0;(4x) USB-A 3.0; (6x) USB-A 2.0
Video portsHDMI(2x) DisplayPort 1.2; DVI
Other portsRJ45; Headset; Line-Out; Line-In; S/PDFI optical/analog;RJ45; Headphones; (2x) Mic; Line in; Line out; PS/2; Serial
Optional portsN.A.Serial; Parallel; VGA; eSATA
SATA ports45
PCI slotsPCIe 3.0 x16;PCIe 3.0 x16; (2x) PCIe 2.0 x1; PCIe 2.0 x16 (wired x4)
M.2 slotsN.A.M.2 2280/2230 M-key (PCIe 3.0 x4, SSD)
Drive bays3.25in; 5.25in;(2x) 3.5in; 5.25 inch
PSU240/330 W280 W
Weight5.49 kg (12.10 lbs)8.00 kg (17.64 lb)
Released20112016
Manuallinklink
Price**Check PriceCheck Price

** As an Amazon associate we earn from qualifying purchases.
* Dedicated GPU warning: Check if your particular power supply model has enough power. Additionally some PSUs don't come with an auxiliary PCIe power connector and you may need to buy a SATA to PCIe power adapter.

Differences between Alienware X51 and Fujitsu Esprimo D756

If you are looking for a more modern desktop, then you should go with the Fujitsu Esprimo D756 which was released in 2016. The Alienware X51 is older and entered production in 2011.

Both models have the same form factor, meaning reoughtly they have the same phiysical size and form.

Processor

Usually the newer the generation of the CPU, the better the performance and efficiency is. If your budget allows it, you should go with the Fujitsu Esprimo D756 as it is running a newer generation CPU. This is not to say that Alienware X51 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Fujitsu Esprimo D756 has 4 RAM slots while the Alienware X51 has only 2 slot(s). This is not something to worry about. Just make sure you take it into consideration when planning how much RAM you are going to use.

The Fujitsu Esprimo D756 is using the faster 2133 MT/s RAM. The Alienware X51 is slower by supporting RAM speeds of up to 1333 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Fujitsu Esprimo D756 as it has the ability to run 64 GB of RAM. The Alienware X51 can do a bit less at max 8 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the Fujitsu Esprimo D756 has 10 USB ports. The Alienware X51 is inferior in this regard and packs 8 USB ports. In any case, if you miss USB ports, you can always purchase a USB hub. None of the desktop models has a USB 3.1 port (10Gb/s), so if you need a fast connection to your peripherals, like external Solid State Drive, you will need to look elsewhere.

Unfortunately, only the Fujitsu Esprimo D756 has a DisplayPort. The Alienware X51 does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.

The Alienware X51 comes with an HDMI port, while the Fujitsu Esprimo D756 does not support the interface. Of course missing HDMI port is something that can be easily fixed with a good adapter (e.g. DisplayPort to HDMI).

SATA ports are placed on the system board and it is where you connect your HDD, SSD and Optical Disk Drives. More SATA slots will allow you to have more drives running at the same time. In this regard the Fujitsu Esprimo D756 is better equipped as it comes with 5 SATA slot(s), while the Alienware X51 has 4 slot(s).

If you want the fastest transfer speeds for your SSD, an M.2 interface is crucial. Thus, if the M.2 SSD slot is a mandatory requirement for you, go with the Fujitsu Esprimo D756. Sadly, the Alienware X51 has no such slot, and you will be forced to use the SATA interface instead.

Make sure that the available M.2 slot supports the PCIe (also called NVMe) interface. This is important as there are M.2 slots which support only the inferior SATA III interface. For comparison, the SATA III interface has max speeds of 6Gb/s, while the PCIe 3.0 x4 will support speeds up to 32Gb/s!

Power Supply

Having a Power Supply Unit with high power rating is important, if you are going to use components which require extra power. The Fujitsu Esprimo D756 comes with a decent 280 Watt PSU, but the Alienware X51 has a more powerful one rated at 330 Watts. Choosing either one depends on your specific requirements and use case. Also don't forget that some models might have more than one PSU option - try to always get the most powerful one, especially if you plan to upgrade to a powerful GPU.

Motherboard

Alienware_X51_motherboard.jpg motherboard layoutFujitsu_Esprimo_D756_motherboard.jpg motherboard layout