Dell OptiPlex 3080M vs. Dell OptiPlex 7040 MT

Comparison and Differences

Dell_OptiPlex_3080M.jpg case front and back pannelDell_OptiPlex_7040_MT.jpg case front and back pannel
Model
Form factorMicroMini Tower
CPU optionsIntel Gen10 i3/i5/i7; Pentium; Celeron;Intel Gen6 i3/i5/i7
ChipsetB460Q170
Dedicated GPU *N.A.GeForce GTX 1650 Super
RAMSODIMM DDR4-2666DIMM DDR4-2133
RAM slots24
RAM speed2666 MT/s2133 MT/s
RAM max64 GB64 GB
USB ports(4x) USB-A 3.0; (2x) USB-A 2.0;(6x) USB-A 3.0; (4x) USB-A 2.0;
Video portsDisplay Port 1.4; HDMI 1.4b;(2x) Display Port 1.2; HDMI 1.4;
Other portsRJ45; Headset; Line-Out;Serial; (2x) PS2; RJ45; Headset; Line-Out;
Optional portsSerial/PS2/DP 1.4/HDMI 2.0b/VGA; (2x)WiFi antenna; VGA; Media Card Reader;
SATA ports14
PCI slotsN.A.PCIe 3.0 x16; PCIe 3.0 x16 (wired x4); PCIe 3.0 x1; PCI;
M.2 slotsM.2 2280/2230 M-key (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT) M.2 2280 M-key (PCIe 3.0 x4, NVMe)
Drive bays2.5in;3.5in/5.25in; (2x) 2.5in; 5.25in (slim);
PSU65 W240 W
Weight1.28 kg (2.82 lb)8.00 kg (17.64 lb)
Released20202015
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 3080M and Dell OptiPlex 7040 MT

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3080M which was released in 2020. The Dell OptiPlex 7040 MT is older and entered production in 2015.

If you are looking for the smaller form factor the Dell OptiPlex 3080M is the right one for you. It is smaller than the Dell OptiPlex 7040 MT 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 3080M as it is running a newer generation CPU. This is not to say that Dell OptiPlex 7040 MT is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Dell OptiPlex 7040 MT has 4 RAM slots while the Dell OptiPlex 3080M 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 3080M is using the faster 2666 MT/s RAM. The Dell OptiPlex 7040 MT 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 Dell OptiPlex 7040 MT has 10 USB ports. The Dell OptiPlex 3080M 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.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Dell OptiPlex 7040 MT comes with 2 ports, while the Dell OptiPlex 3080M has only 1. If you are planning to use multiple monitors, the Dell OptiPlex 7040 MT is the better choice.

In case your monitor supports HDMI only, you will be happy to hear that both models come with an HDMI port.

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 7040 MT is better equipped as it comes with 4 SATA slot(s), while the Dell OptiPlex 3080M 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 3080M comes with a decent 65 Watt PSU, but the Dell OptiPlex 7040 MT has a more powerful one rated at 240 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_3080M_motherboard.jpg motherboard layoutDell_OptiPlex_7040_MT_motherboard.jpg motherboard layout