Dell OptiPlex 3040 MT vs. Dell OptiPlex 3080 SFF

Comparison and Differences

Dell_OptiPlex_3040_MT.jpg case front and back pannelDell_OptiPlex_3080_SFF.jpg case front and back pannel
Model
Form factorMini TowerSmall
CPU optionsIntel Gen6 i3/i5; Pentium; Celeron; Intel Gen10 i3/i5/i7; Pentium; Celeron;
ChipsetH110B460
Dedicated GPU *GeForce GTX 1650 SuperGeForce GT 1030 Low Profile
RAMDIMM DDR3L-1600 DIMM DDR4-2666
RAM slots22
RAM speed1600 MT/s2666 MT/s
RAM max16 GB64 GB
USB ports(4x) USB-A 3.0; (4x) USB-A 2.0; (4x) USB-A 3.0; (4x) USB-A 2.0;
Video ports Display Port 1.2; HDMI 1.4;Display Port 1.4; HDMI 1.4b;
Other portsRJ45; Headset; Line-Out; RJ45; Headset; Line-Out;
Optional portsSerial+PS2; VGA; Media Card Reader;Serial/PS2; DP1.4/HDMI2.0b/VGA; (2x)WiFi antenna;
SATA ports32
PCI slotsPCIe 3.0 x16; (3x) PCIe 3.0 x1;PCIe 3.0 x16; PCIe x1;
M.2 slotsN.A.M.2 2280/2230 M-key (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT)
Drive bays3.5in/5.25in; (2x) 2.5in; 5.25in slim;3.5in/(2x)2.5in; 5.25in (slim);
PSU240 W200 W
Weight7.93 kg (17.49 lb)5.02 kg (11.07 lb)
Released20152020
Manuallinklink
Price**Check PriceCheck 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 3040 MT and Dell OptiPlex 3080 SFF

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3080 SFF which was released in 2020. The Dell OptiPlex 3040 MT is older and entered production in 2015.

If you are looking for the smaller form factor the Dell OptiPlex 3080 SFF is the right one for you. It is smaller than the Dell OptiPlex 3040 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 3080 SFF as it is running a newer generation CPU. This is not to say that Dell OptiPlex 3040 MT 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 3080 SFF is using the faster 2666 MT/s RAM. The Dell OptiPlex 3040 MT 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 3080 SFF as it has the ability to run 64 GB of RAM. The Dell OptiPlex 3040 MT 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.

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.

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 3040 MT is better equipped as it comes with 3 SATA slot(s), while the Dell OptiPlex 3080 SFF has 2 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 3080 SFF. Sadly, the Dell OptiPlex 3040 MT 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 3080 SFF comes with a decent 200 Watt PSU, but the Dell OptiPlex 3040 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_3040_MT_motherboard.jpg motherboard layoutDell_OptiPlex_3080_SFF_motherboard.jpg motherboard layout