Alienware Aurora R5 vs. HP ProDesk 400 G4 SFF

Comparison and Differences

Alienware_Aurora_R5.jpg case front and back pannel

HP_ProDesk_400_G4_SFF.jpg case front and back pannel

Model
Form factor	Mid Tower	Small
CPU options	Intel Gen6 i3/i5/i7;	Intel Gen6&7 i3/i5/i7; Celeron; Pentium;
Chipset	Z170	H270
Dedicated GPU *	GeForce RTX 2070 Super	GeForce GT 1030 Low Profile
RAM	DIMM DDR4-2133/2400	DIMM DDR4-2400
RAM slots	4	2
RAM speed	2400 MT/s	2400 MT/s
RAM max	64 GB	64 GB
USB ports	(5x) USB 3.0 Type A; (6x) USB-A 2.0; USB 3.1 Type C; USB 3.1 Type A;	(4x)USB-A 3.0; (4x)USB-A 2.0;
Video ports	N/A	DisplayPort; VGA;
Other ports	RJ45; Headset; Line-Out; Line-In; S/PDFI optical/analog; Front, side, center, rare outputs;	RJ45; Headset; Line-Out; Line-In;
Optional ports	DisplayPort	SD card reader; Serial and (2x) PS2;
SATA ports	4	2
PCI slots	(x2) PCIe 3.0 x16; (x2) PCIe 3.0 x4;	PCIe 3.0 x16; PCIe 3.0 x4;
M.2 slots	M.2 2230 (WiFi/BT); M.2 2280/2260/2240 M-key (PCIe 3.0 x2, NVMe);	M.2 2230 (WiFi/BT)
Drive bays	(2x) 2.5in; 3.25in;	2.5in/3.5in; 5.25in (slim)
PSU	460/850 W	180 W
Weight	14.62 kg (32.23 lb)	4.6 kg (10.14 lb)
Released	2015	2017
Manual	link	link
Price**	Check Price	Check 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 Aurora R5 and HP ProDesk 400 G4 SFF

If you are looking for a more modern desktop, then you should go with the HP ProDesk 400 G4 SFF which was released in 2017. The Alienware Aurora R5 is older and entered production in 2015.

If you are looking for the smaller form factor the HP ProDesk 400 G4 SFF is the right one for you. It is smaller than the Alienware Aurora R5 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 ProDesk 400 G4 SFF as it is running a newer generation CPU. This is not to say that Alienware Aurora R5 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Alienware Aurora R5 has 4 RAM slots while the HP ProDesk 400 G4 SFF 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.

None of the desktops has an advantage when it comes to the speed of the RAM being used. Both models support RAM speeds of up to 2400. In addition, you will be able to install the same amount of RAM in both models, and most probably 64 GB of RAM will be enough for most people. However, if you will be needing more RAM, make sure to check other desktop models too.

Ports

In total the Alienware Aurora R5 has 13 USB ports. The HP ProDesk 400 G4 SFF 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 Alienware Aurora R5, is that it has 2 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the HP ProDesk 400 G4 SFF 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 ProDesk 400 G4 SFF has a DisplayPort. The Alienware Aurora R5 does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.

None of the models has an HDMI port. If your monitor supports only the HDMI interface, you will need to buy an adapter. Such adapters are cheap so nothing to worry about.

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 Alienware Aurora R5 is better equipped as it comes with 4 SATA slot(s), while the HP ProDesk 400 G4 SFF has 2 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 Alienware Aurora R5. Sadly, the HP ProDesk 400 G4 SFF 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 HP ProDesk 400 G4 SFF comes with a decent 180 Watt PSU, but the Alienware Aurora R5 has a more powerful one rated at 850 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.