Dell Inspiron 3668 vs. Dell XPS 8900

Comparison and Differences

Dell_Inspiron_3668.jpg case front and back pannelDell_XPS_8900.jpg case front and back pannel
Model
Form factorMini TowerMini Tower
CPU optionsIntel Gen6 i3/i5/i7; Celeron; Pentium;Intel Gen6 i3/i5/i7;
ChipsetH110Z170
Dedicated GPU *GeForce GTX 1650 SuperGeForce GTX 1080 Ti
RAMDIMM DDR4-2133/2400DIMM DDR4-2133/2400
RAM slots24
RAM speed2400 MT/s2133 MT/s
RAM max16 GB64 GB
USB ports(2x) USB-A 3.0; (4x) USB-A 2.0;(4x) USB-A 2.0; (6x) USB 3.0;
Video portsHDMI 1.2; VGA;HDMI 1.4; DisplayPort 1.2;
Other portsRJ45; Hdph; Mic; Line-Out; Line-In; Card Reader;RJ45; Mic; Headset; Card Reader;
Optional portsN.A.N.A.
SATA ports55
PCI slotsPCIe 2.0 x16; (2x) PCIe 2.0 x1;PCIe 3.0 x16; (x2) PCIe x4;
M.2 slotsM.2 2230 (WiFi/BT)M.2 2230 (WiFi/BT)
Drive bays(2x) 2.5in; 3.25in; 9.5mm(3x) 3.5in; (2x) 5.25in;
PSU240 W460 W
Weight5.90 kg (13.01 lb)13.3 kg (29.32 lb)
Released20162015
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 Inspiron 3668 and Dell XPS 8900

If you are looking for a more modern desktop, then you should go with the Dell Inspiron 3668 which was released in 2016. The Dell XPS 8900 is older and entered production in 2015.

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

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

The Dell XPS 8900 has 4 RAM slots while the Dell Inspiron 3668 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 Dell Inspiron 3668 is using the faster 2400 MT/s RAM. The Dell XPS 8900 is slower by supporting RAM speeds of up to 2133 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell XPS 8900 as it has the ability to run 64 GB of RAM. The Dell Inspiron 3668 can do a bit less at max 16 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the Dell XPS 8900 has 10 USB ports. The Dell Inspiron 3668 is inferior in this regard and packs 6 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 Dell XPS 8900 has a DisplayPort. The Dell Inspiron 3668 does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.

In case your monitor supports HDMI only, you will be happy to hear that both models come with an HDMI port.

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 5 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

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 Dell Inspiron 3668 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 Dell Inspiron 3668 comes with a decent 240 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_Inspiron_3668_motherboard.jpg motherboard layoutDell_XPS_8900_motherboard.jpg motherboard layout