Dell OptiPlex 3090 M vs. HP ProDesk 490 G1 Microtower

Comparison and Differences

Dell_OptiPlex_3090_M.jpg case front and back pannelHP_ProDesk_490_G1_Microtower.jpg case front and back pannel
Model
Form factorMicroMini Tower
CPU optionsIntel Gen10 i3/i5/i7; Pentium; Celeron;Intel Gen4 i3/i5/i7; Celeron; Pentium;
ChipsetQ470H81
Dedicated GPU *N.A.GeForce GTX 1660 Super
RAMSODIMM DDR4-2666/2933DIMM DDR3-1600
RAM slots24
RAM speed2933 MT/s1600 MT/s
RAM max64 GB32 GB
USB ports(4x) USB-A 3.0; (2x) USB-A 2.0;(4x)USB-A 3.0; (6x)USB-A 2.0;
Video ports(2x) Display Port 1.4;DVI-D; VGA;
Other portsRJ45; Headset; Line-Out;RJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2;
Optional portsHDMI 2.0b/Displayport/VGA;SD card reader; DisplayPort 1.2; Serial; Parallel;
SATA ports14
PCI slotsN.A.PCIe x16; (3x) PCIe x1;
M.2 slotsM.2 2280/2230 M-key (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT) N.A.
Drive bays2.5in;(3x) 3.5in; (2x) 5.25in
PSU65 W300 W
Weight1.28 kg (2.82 lb)7.1 kg (15.7 lb)
Released20212013
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 OptiPlex 3090 M and HP ProDesk 490 G1 Microtower

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3090 M which was released in 2021. The HP ProDesk 490 G1 Microtower is older and entered production in 2013.

If you are looking for the smaller form factor the Dell OptiPlex 3090 M is the right one for you. It is smaller than the HP ProDesk 490 G1 Microtower 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 Dell OptiPlex 3090 M as it is running a newer generation CPU. This is not to say that HP ProDesk 490 G1 Microtower is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The HP ProDesk 490 G1 Microtower has 4 RAM slots while the Dell OptiPlex 3090 M 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 OptiPlex 3090 M is using the faster 2933 MT/s RAM. The HP ProDesk 490 G1 Microtower is slower by supporting RAM speeds of up to 1600 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell OptiPlex 3090 M as it has the ability to run 64 GB of RAM. The HP ProDesk 490 G1 Microtower can do a bit less at max 32 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the HP ProDesk 490 G1 Microtower has 10 USB ports. The Dell OptiPlex 3090 M is inferior in this regard and packs 5 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 OptiPlex 3090 M has a DisplayPort. The HP ProDesk 490 G1 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 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 HP ProDesk 490 G1 Microtower is better equipped as it comes with 4 SATA slot(s), while the Dell OptiPlex 3090 M has 1 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 Dell OptiPlex 3090 M. Sadly, the HP ProDesk 490 G1 Microtower 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 Dell OptiPlex 3090 M comes with a decent 65 Watt PSU, but the HP ProDesk 490 G1 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

Dell_OptiPlex_3090_M_motherboard.jpg motherboard layoutHP_ProDesk_490_G1_Microtower_motherboard.jpg motherboard layout