Dell Vostro 3900g vs. HP ProDesk 400 G2 Microtower

Comparison and Differences

Dell_Vostro_3900g.jpg case front and back pannelHP_ProDesk_400_G2_Microtower.jpg case front and back pannel
Model
Form factorMini TowerMini Tower
CPU optionsIntel Gen4 i3/i5/i7; Pentium; Celeron;Intel Gen4 i3/i5/i7; Celeron; Pentium;
ChipsetH81 H81
Dedicated GPU *GeForce GTX 1660 SuperGeForce GTX 1660 Super
RAMDIMM DDR3-1600DIMM DDR3-1600
RAM slots22
RAM speed1600 MT/s1600 MT/s
RAM max16 GB16 GB
USB ports(6x)USB-A 2.0; (2x)USB-A 3.0; (2x)USB-A 3.0; (4x)USB-A 2.0;
Video portsHDMI 1.2; VGA;VGA; DVI-D;
Other portsRJ45; Hdph; (2x) Mic; Line-Out; Line-In; PS2RJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2; SD card reader (USB-? 2.0);
Optional portsN/ASerial; Parallel;
SATA ports43
PCI slotsPCIe 2.0 x16; (2x) PCIe 2.0 x1; PCIPCIe x16; (3x) PCIe x1;
M.2 slotsN.A.N.A.
Drive bays3.5in; 5.25in;(2x) 3.5in; 5.25in (slim)
PSU300 W180/300 W
Weight8.50 kg (18.73 lbs)6.5 kg (14.33 lb)
Released20142014
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 Vostro 3900g and HP ProDesk 400 G2 Microtower

Both computers, the Dell Vostro 3900g and the HP ProDesk 400 G2 Microtower, were released during the same year - 2014.

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

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 G2 Microtower as it is running a newer generation CPU. This is not to say that Dell Vostro 3900g is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

Both models have have equal amount of ram slots (2 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 1600. In addition, you will be able to install the same amount of RAM in both models, and most probably 16 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 Vostro 3900g has 8 USB ports. The HP ProDesk 400 G2 Microtower 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.

Nowadays, almost every new computer comes equipped with a DisplayPort. However, none of the devices being compared here has one. Don't worry though, DisplayPort adapters are very cheap and you can get virtually any combination of conversion types.

The Dell Vostro 3900g comes with an HDMI port, while the HP ProDesk 400 G2 Microtower 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 Vostro 3900g is better equipped as it comes with 4 SATA slot(s), while the HP ProDesk 400 G2 Microtower 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 Vostro 3900g, nor the HP ProDesk 400 G2 Microtower 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

Looking at the Power Supply Unit (PSU) of the two models we don't see any differences. For either of them you get a maximum power of 300 Watts. However be careful, many models have more than one power supply option. When buying your computer, it is a good idea to get a version with the most powerful PSU. This will potentially allow you to upgrade to a more powerful GPU for example.

Motherboard

Dell_Vostro_3900g_motherboard.jpg motherboard layoutHP_ProDesk_400_G2_Microtower_motherboard.jpg motherboard layout