Dell XPS 8900 vs. HP ProDesk 400 G6 SFF

Comparison and Differences

Dell_XPS_8900.jpg case front and back pannelHP_ProDesk_400_G6_SFF.jpg case front and back pannel
Model
Form factorMini TowerSmall
CPU optionsIntel Gen6 i3/i5/i7;Intel Gen8&9 i3/i5/i7; Celeron; Pentium;
ChipsetZ170B360
Dedicated GPU *GeForce GTX 1080 TiGeForce GT 1030 Low Profile
RAMDIMM DDR4-2133/2400 DIMM DDR4-2666
RAM slots42
RAM speed2133 MT/s2666 MT/s
RAM max64 GB64 GB
USB ports(4x) USB-A 2.0; (6x) USB 3.0;(4x)USB-A 3.0; (4x)USB-A 2.0;
Video portsHDMI 1.4; DisplayPort 1.2;DisplayPort; VGA;
Other portsRJ45; Mic; Headset; Card Reader;RJ45; Headset; Line-In; Line-Out;
Optional portsN.A.SD card reader; Serial; Serial and (2x) PS2; DP/HDMI/VGA/USB-C;
SATA ports52
PCI slotsPCIe 3.0 x16; (x2) PCIe x4;PCIe 3.0 x16; PCIe 3.0 x1 ;
M.2 slotsM.2 2230 (WiFi/BT)M.2 2280/2230 M-key (PCIe x4); M.2 2230 (WiFi/BT)
Drive bays(3x) 3.5in; (2x) 5.25in;(2x) 2.5/3.5in; 5.25in (slim);
PSU460 W180 W
Weight13.3 kg (29.32 lb)4.6 kg (10.14 lb)
Released20152019
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 Dell XPS 8900 and HP ProDesk 400 G6 SFF

If you are looking for a more modern desktop, then you should go with the HP ProDesk 400 G6 SFF which was released in 2019. The Dell XPS 8900 is older and entered production in 2015.

If you are looking for the smaller form factor the HP ProDesk 400 G6 SFF is the right one for you. It is smaller than the Dell XPS 8900 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 G6 SFF as it is running a newer generation CPU. This is not to say that Dell XPS 8900 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Dell XPS 8900 has 4 RAM slots while the HP ProDesk 400 G6 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.

The HP ProDesk 400 G6 SFF is using the faster 2666 MT/s RAM. The Dell XPS 8900 is slower by supporting RAM speeds of up to 2133 MT/s. 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 Dell XPS 8900 has 10 USB ports. The HP ProDesk 400 G6 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. 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.

The DisplayPort is usually the more popular video port used with desktops and laptops, while the HDMI is used predominantly in consumer electronics. That's why, it is good to see that both of the models come with a DisplayPort.

The Dell XPS 8900 comes with an HDMI port, while the HP ProDesk 400 G6 SFF 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 Dell XPS 8900 is better equipped as it comes with 5 SATA slot(s), while the HP ProDesk 400 G6 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 HP ProDesk 400 G6 SFF. Sadly, the Dell XPS 8900 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 G6 SFF comes with a decent 180 Watt PSU, but the Dell XPS 8900 has a more powerful one rated at 460 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

Dell_XPS_8900_motherboard.jpg motherboard layoutHP_ProDesk_400_G6_SFF_motherboard.jpg motherboard layout