Dell OptiPlex M 7020 2024 vs. HP ProDesk 490 G3 Microtower

Comparison and Differences

Dell_OptiPlex_M_7020_2024.jpg case front and back pannel

HP_ProDesk_490_G3_Microtower.jpg case front and back pannel

Model
Form factor	Micro	Mini Tower
CPU options	Intel Gen 12&13&14 i3/i5/i7; Celeron; Pentium	Intel Gen6 i3/i5/i7; Celeron; Pentium;
Chipset	Q670	H110
Dedicated GPU *	N.A.	GeForce GTX 1660 Super
RAM	SODIMM DDR5-5600	DIMM DDR4-2133
RAM slots	2	4
RAM speed	5600 MT/s	2133 MT/s
RAM max	64 GB	64 GB
USB ports	(2x) USB-A 2.0; (3x) USB-A 3.0; USB-C 3.1;	(6x)USB-A 3.0; (2x)USB-A 2.0;
Video ports	Display Port 1.4a; HDMI 1.4b;	DisplayPort; VGA;
Other ports	RJ45(2.5GHz); Audio	RJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2;
Optional ports	HDMI 2.1/Displayport/VGA/PS2/serial/USB Type-C;	SD card reader; Serial; Parallel;
SATA ports	0	3
PCI slots	N.A.	PCIe 3.0 x16; (2x) PCIe x1; PCIe 3.0 x16 (wired x4);
M.2 slots	M.2 2230/2280 (PCIe 4.0 x4, NVMe); M.2 2230 (WiFi/BT)	N.A.
Drive bays	2.5in;	(2x) 3.5in; 5.25in (slim)
PSU	65/90 W	180/300 W
Weight	1.32 kg (2.91 lb)	7.05 kg (15.5 lb)
Released	2024	2015
Manual	link	link
Price**	Check Price	Check Price

** As an Amazon associate we earn from qualifying purchases.
* 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 M 7020 2024 and HP ProDesk 490 G3 Microtower

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex M 7020 2024 which was released in 2024. The HP ProDesk 490 G3 Microtower is older and entered production in 2015.

If you are looking for the smaller form factor the Dell OptiPlex M 7020 2024 is the right one for you. It is smaller than the HP ProDesk 490 G3 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 M 7020 2024 as it is running a newer generation CPU. This is not to say that HP ProDesk 490 G3 Microtower is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The HP ProDesk 490 G3 Microtower has 4 RAM slots while the Dell OptiPlex M 7020 2024 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 M 7020 2024 is using the faster 5600 MT/s RAM. The HP ProDesk 490 G3 Microtower is slower by supporting RAM speeds of up to 2133 MT/s. 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 HP ProDesk 490 G3 Microtower has 8 USB ports. The Dell OptiPlex M 7020 2024 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. What is nice about the Dell OptiPlex M 7020 2024, is that it has 1 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the HP ProDesk 490 G3 Microtower has no such port, thus restricting your transfer speeds significantly. For people who want to use external drives on regular basis, this might be an issue.

The DisplayPort is usually the more popular video port used with desktops and laptops, while the HDMI is used predominantly in consumer electronics. That's why, it is good to see that both of the models come with a DisplayPort.

The Dell OptiPlex M 7020 2024 comes with an HDMI port, while the HP ProDesk 490 G3 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 HP ProDesk 490 G3 Microtower is better equipped as it comes with 3 SATA slot(s), while the Dell OptiPlex M 7020 2024 has 0 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 M 7020 2024. Sadly, the HP ProDesk 490 G3 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 M 7020 2024 comes with a decent 90 Watt PSU, but the HP ProDesk 490 G3 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.