Dell XPS 8900 vs. Lenovo ThinkCentre M900 Small

Comparison and Differences

Dell_XPS_8900.jpg case front and back pannelLenovo_ThinkCentre_M900_Small.jpg case front and back pannel
Model
Form factorMini TowerSmall
CPU optionsIntel Gen6 i3/i5/i7;Intel Gen6 i3/i5/i7; Celeron; Pentium;
ChipsetZ170Q170
Dedicated GPU *GeForce GTX 1080 TiGeForce GT 1030 Low Profile
RAMDIMM DDR4-2133/2400 DIMM DDR4-2133
RAM slots44
RAM speed2133 MT/s2133 MT/s
RAM max64 GB64 GB
USB ports(4x) USB-A 2.0; (6x) USB 3.0;(8x)USB-A 3.0;
Video portsHDMI 1.4; DisplayPort 1.2;(2x) DisplayPort 1.2; VGA;
Other portsRJ45; Mic; Headset; Card Reader;RJ45; Hdph; (2x) Mic; Line-Out; Line-In; Serial;
Optional portsN.A.2x USB-A 2.0; Media card reader (USB 2.0); (2x) PS2; eSATA;
SATA ports53
PCI slotsPCIe 3.0 x16; (x2) PCIe x4;PCIe 3.0 x16; PCIe 3.0 x1; PCIe 3.0 x16 (wired x4); M2 to PCI adapter (optional);
M.2 slotsM.2 2230 (WiFi/BT)M.2 (WiFi/BT or PCI extension card)
Drive bays(3x) 3.5in; (2x) 5.25in;2.5in; 2.5/3.5in; 5.25in (slim);
PSU460 WTFX 210 W
Weight13.3 kg (29.32 lb)9 kg (19.8 lbs)
Released20152015
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 Lenovo ThinkCentre M900 Small

Both computers, the Dell XPS 8900 and the Lenovo ThinkCentre M900 Small, were released during the same year - 2015.

If you are looking for the smaller form factor the Lenovo ThinkCentre M900 Small is the right one for you. It is smaller than the Dell XPS 8900 and will fit more easily under your desk.

Processor

The two models have the same generation of Intel processors. We think that the 6 generation of Intel Processors have enough power to execute all of the home and office tasks that most people will care to do.

Memory

Both models have have equal amount of ram slots (4 RAM). Usually two RAM slots are more than enough for most cases. However, the count should be taken into account when planning how much and what combination of RAM you are going to need for your system.

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 2133. 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 Lenovo ThinkCentre M900 Small 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.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Lenovo ThinkCentre M900 Small comes with 2 ports, while the Dell XPS 8900 has only 1. If you are planning to use multiple monitors, the Lenovo ThinkCentre M900 Small is the better choice.

The Dell XPS 8900 comes with an HDMI port, while the Lenovo ThinkCentre M900 Small 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 Lenovo ThinkCentre M900 Small has 3 slot(s).

M.2 SSD interface allows you to transfer data with higher speeds compared to the old SATA interface. Unfortunately, neither the Dell XPS 8900, nor the Lenovo ThinkCentre M900 Small has one. However, you can still use a SATA SSD drive which should give you satisfactory performance.

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 Lenovo ThinkCentre M900 Small comes with a decent 210 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 layoutLenovo_ThinkCentre_M900_Small_motherboard.jpg motherboard layout