Dell OptiPlex 3070M vs. Dell OptiPlex 9020 SFF

Comparison and Differences

Dell_OptiPlex_3070M.jpg case front and back pannelDell_OptiPlex_9020_SFF.jpg case front and back pannel
Model
Form factorMicroSmall
CPU optionsIntel Gen8&9 i3/i5/i7; Celeron; Pentium;Intel Gen4 i3/i5/i7;
ChipsetH370Q87
Dedicated GPU *N.A.GeForce GTX 1650 Low Profile
RAMSODIMM DDR4-2400/2666DIMM DDR3-1600
RAM slots24
RAM speed2666 MT/s1600 MT/s
RAM max32 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 portsDisplay Port 1.2; HDMI 1.4;(2x) DisplayPort 1.2; VGA;
Other portsRJ45; Headset; Line-Out; RJ45; Hdph; Mic; Line-Out; Line-In; Serial; (2x) PS2;
Optional portsDP1.2/HDMI2.0/VGA/Serial+PS2/Serial; (2x) WiFi antenna;N.A.
SATA ports13
PCI slotsN.A.PCIe 3.0 x16; PCIe x16 (wired x4);
M.2 slotsM.2 2280/2230 M-key (PCIe 2.0 x4, NVMe); M.2 2230 (WiFi/BT) N.A.
Drive bays2.5in;2.5/3.5in; 5.25in(slim)
PSU65 W 255 W
Weight1.18 kg (2.60 lb)6.00 kg (13.22 lb)
Released20192013
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 3070M and Dell OptiPlex 9020 SFF

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3070M which was released in 2019. The Dell OptiPlex 9020 SFF is older and entered production in 2013.

If you are looking for the smaller form factor the Dell OptiPlex 3070M is the right one for you. It is smaller than the Dell OptiPlex 9020 SFF 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 3070M as it is running a newer generation CPU. This is not to say that Dell OptiPlex 9020 SFF is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Dell OptiPlex 9020 SFF has 4 RAM slots while the Dell OptiPlex 3070M 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 3070M is using the faster 2666 MT/s RAM. The Dell OptiPlex 9020 SFF is slower by supporting RAM speeds of up to 1600 MT/s. In addition, you will be able to install the same amount of RAM in both models, and most probably 32 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 9020 SFF has 10 USB ports. The Dell OptiPlex 3070M 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 9020 SFF comes with 2 ports, while the Dell OptiPlex 3070M has only 1. If you are planning to use multiple monitors, the Dell OptiPlex 9020 SFF is the better choice.

The Dell OptiPlex 3070M comes with an HDMI port, while the Dell OptiPlex 9020 SFF 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 9020 SFF is better equipped as it comes with 3 SATA slot(s), while the Dell OptiPlex 3070M 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 3070M. Sadly, the Dell OptiPlex 9020 SFF 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 3070M comes with a decent 65 Watt PSU, but the Dell OptiPlex 9020 SFF has a more powerful one rated at 255 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_3070M_motherboard.jpg motherboard layoutDell_OptiPlex_9020_SFF_motherboard.jpg motherboard layout