Alienware X51 vs. HP EliteDesk 800 G4 Tower

Comparison and Differences

Alienware_X51.jpg case front and back pannelHP_EliteDesk_800_G4_Tower.jpg case front and back pannel
Model
Form factorSmall GamingMini Tower
CPU optionsIntel Gen2&3 i3/i5/i7;Intel Gen8 i3/i5/i7; Celeron; Pentium;
ChipsetH61Q370
Dedicated GPU *GeForce GTX 1650 SuperGeForce GTX 1660 Super
RAMDIMM DDR3-1333DIMM DDR4-2666
RAM slots24
RAM speed1333 MT/s2666 MT/s
RAM max8 GB64 GB
USB ports(2x) USB 3.0 Type A; (6x) USB-A 2.0;USB-C 3.1; (4x)USB-A 3.1; (2x)USB-A 3.0; (4x)USB-A 2.0;
Video portsHDMI(2x) DisplayPort;
Other portsRJ45; Headset; Line-Out; Line-In; S/PDFI optical/analog;RJ45; Hdph; Headset; Line-Out; Line-In;
Optional portsN.A.DP/HDMI/VGA/USB-C(DP); Serial; SD card reader;
SATA ports44
PCI slotsPCIe 3.0 x16;PCIe 3.0 x16; (2x) PCIe 3.0 x1; PCIe 3.0 x16 (wired x4);
M.2 slotsN.A.(2x) M.2 2280/2230 M-key (PCIe x4); M.2 2230 (WiFi/BT);
Drive bays3.25in; 5.25in;2.5in; (2x) 3.5in; 5.25in; 5.25in (slim);
PSU240/330 W250/500 W
Weight5.49 kg (12.10 lbs)9.86 kg (21.74 lb)
Released20112018
Manuallinklink
Price**Check PriceCheck Price

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* 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 HP EliteDesk 800 G4 Tower

If you are looking for a more modern desktop, then you should go with the HP EliteDesk 800 G4 Tower which was released in 2018. The Alienware X51 is older and entered production in 2011.

If you are looking for the smaller form factor the Alienware X51 is the right one for you. It is smaller than the HP EliteDesk 800 G4 Tower and will fit more easily under your desk.

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 HP EliteDesk 800 G4 Tower 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 HP EliteDesk 800 G4 Tower 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 HP EliteDesk 800 G4 Tower is using the faster 2666 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 HP EliteDesk 800 G4 Tower 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 HP EliteDesk 800 G4 Tower has 11 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. What is nice about the HP EliteDesk 800 G4 Tower, is that it has 5 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the Alienware X51 has no such port, thus restricting your transfer speeds significantly. For people who want to use external drives on regular basis, this might be an issue.

Unfortunately, only the HP EliteDesk 800 G4 Tower 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 HP EliteDesk 800 G4 Tower 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 slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Each of the two models being compared have 4 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

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 HP EliteDesk 800 G4 Tower. 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 Alienware X51 comes with a decent 330 Watt PSU, but the HP EliteDesk 800 G4 Tower has a more powerful one rated at 500 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 layoutHP_EliteDesk_800_G4_Tower_motherboard.jpg motherboard layout