Dell OptiPlex 3000 M vs. Dell OptiPlex 3090 Tower

Comparison and Differences

Dell_OptiPlex_3000_M.jpg case front and back pannelDell_OptiPlex_3090_Tower.jpg case front and back pannel
Model
Form factorMicroMini Tower
CPU optionsIntel Gen 12 T i3/i5/i7; Celeron; PentiumIntel Gen 10 i3/i5/i7/i9; Pentium
ChipsetB660Q470
Dedicated GPU *N.A.GeForce GTX 1650
RAMSODIMM DDR4-3200DIMM DDR4-2666
RAM slots22
RAM speed3200 MT/s2666 MT/s
RAM max64 GB64 GB
USB ports(2x) USB-A 2.0; (2x) USB-A 3.0;(4x) USB-A 2.0; (4x) USB-A 3.0;
Video portsDisplay Port 1.4a; HDMI 1.4b;Display Port 1.4a; HDMI 1.4b;
Other portsRJ45; Audio; Line-Out/In;RJ45; Audio; Line-Out/In;
Optional portsHDMI 2.0b/Displayport/VGA;HDMI 2.0b/Displayport/VGA;
SATA ports13
PCI slotsN.A.PCIe 3.0 x16; (2x) PCIe 3.0 x1;
M.2 slotsM.2 2230/2280 (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT) M.2 2230/2280 (PCIe 4.0 x4, NVMe); M.2 2230 (WiFi/BT)
Drive bays2.5in;3.5in; 2.5in; 5.25in (slim);
PSU65/90 W260 W
Weight1.33 kg (2.94 lbs)6.50 kg (14.33 lb)
Released20222021
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 3000 M and Dell OptiPlex 3090 Tower

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3000 M which was released in 2022. The Dell OptiPlex 3090 Tower is older and entered production in 2021.

If you are looking for the smaller form factor the Dell OptiPlex 3000 M is the right one for you. It is smaller than the Dell OptiPlex 3090 Tower 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 3000 M as it is running a newer generation CPU. This is not to say that Dell OptiPlex 3090 Tower 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.

The Dell OptiPlex 3000 M is using the faster 3200 MT/s RAM. The Dell OptiPlex 3090 Tower is slower by supporting RAM speeds of up to 2666 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 Dell OptiPlex 3090 Tower has 8 USB ports. The Dell OptiPlex 3000 M is inferior in this regard and packs 4 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.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Dell OptiPlex 3090 Tower comes with 2 ports, while the Dell OptiPlex 3000 M has only 1. If you are planning to use multiple monitors, the Dell OptiPlex 3090 Tower is the better choice.

The Dell OptiPlex 3000 M comes with an HDMI port, while the Dell OptiPlex 3090 Tower 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 OptiPlex 3090 Tower is better equipped as it comes with 3 SATA slot(s), while the Dell OptiPlex 3000 M has 1 slot(s).

When your goal is to have the fastest SSD transfer speeds, an M.2 interface is crucial. Thus, it is good that both models have M.2 SSD slots. Today M.2 SSDs are not much more expensive than the average SATA drives, so it really does not make sense to invest in SATA drives anymore.

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 3000 M comes with a decent 90 Watt PSU, but the Dell OptiPlex 3090 Tower has a more powerful one rated at 260 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_3000_M_motherboard.jpg motherboard layoutDell_OptiPlex_3090_Tower_motherboard.jpg motherboard layout