HP ProDesk 400 G2 SFF vs. HP ProDesk 490 G2 Microtower

Comparison and Differences

HP_ProDesk_400_G2_SFF.jpg case front and back pannelHP_ProDesk_490_G2_Microtower.jpg case front and back pannel
Model
Form factorSmallMini Tower
CPU optionsIntel Gen4 i3/i5/i7; Celeron; Pentium;Intel Gen4 i3/i5/i7; Celeron; Pentium;
ChipsetH81H81
Dedicated GPU *GeForce GTX 1650 Low ProfileGeForce GTX 1660 Super
RAMDIMM DDR3-1600 DIMM DDR3-1600
RAM slots24
RAM speed1600 MT/s1600 MT/s
RAM max16 GB32 GB
USB ports(2x)USB-A 3.0; (6x)USB-A 2.0; (4x)USB-A 3.0; (4x)USB-A 2.0;
Video portsDisplayPort; VGA;VGA; DVI-D;
Other portsRJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2;RJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2;
Optional portsMedia card reader; Serial; Parallel; SD card reader; Serial; Parallel; DisplayPort
SATA ports33
PCI slotsPCIe x16; (3x) PCIe x1; PCIe x16; (2x) PCIe x1; PCIe x16 (wired x4);
M.2 slotsN.A.N.A.
Drive bays2.5in; (2x) 3.5in; 5.25in (slim)(2x) 3.5in; 5.25in (slim)
PSU240 W180/300 W
Weight5.9 kg (13.0 lb)6.5 kg (14.3 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 HP ProDesk 400 G2 SFF and HP ProDesk 490 G2 Microtower

Both computers, the HP ProDesk 400 G2 SFF and the HP ProDesk 490 G2 Microtower, were released during the same year - 2014.

If you are looking for the smaller form factor the HP ProDesk 400 G2 SFF is the right one for you. It is smaller than the HP ProDesk 490 G2 Microtower and will fit more easily under your desk.

Processor

The two models have the same generation of Intel processors. We think that the 4 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 HP ProDesk 490 G2 Microtower has 4 RAM slots while the HP ProDesk 400 G2 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 1600. Additionally, if you will be needing a lot of RAM, better go for the HP ProDesk 490 G2 Microtower as it has the ability to run 32 GB of RAM. The HP ProDesk 400 G2 SFF can do a bit less at max 16 GB. Most of the times, this should be sufficient for the majority of users.

Ports

Both models have the same amount of USB ports for total count of 8. If this is not enough, using a USB hub is always a viable option. 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 HP ProDesk 400 G2 SFF has a DisplayPort. The HP ProDesk 490 G2 Microtower 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 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 3 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 HP ProDesk 400 G2 SFF, nor the HP ProDesk 490 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

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 G2 SFF comes with a decent 240 Watt PSU, but the HP ProDesk 490 G2 Microtower has a more powerful one rated at 300 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

HP_ProDesk_400_G2_SFF_motherboard.jpg motherboard layoutHP_ProDesk_490_G2_Microtower_motherboard.jpg motherboard layout