Dell OptiPlex 3010 DT vs. Dell OptiPlex 5050 MT
Comparison and Differences
Differences between Dell OptiPlex 3010 DT and Dell OptiPlex 5050 MT
If you are looking for the smaller form factor the Dell OptiPlex 3010 DT is the right one for you. It is smaller than the Dell OptiPlex 5050 MT and will fit more easily under your desk.
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 5050 MT as it is running a newer generation CPU. This is not to say that Dell OptiPlex 3010 DT is bad - it can still run some powerful CPUs, albeit being an older generation.
The Dell OptiPlex 5050 MT has 4 RAM slots while the Dell OptiPlex 3010 DT 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 5050 MT is using the faster 2400 MT/s RAM. The Dell OptiPlex 3010 DT 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 5050 MT as it has the ability to run 64 GB of RAM. The Dell OptiPlex 3010 DT can do a bit less at max 8 GB. Most of the times, this should be sufficient for the majority of users.
In total the Dell OptiPlex 5050 MT has 10 USB ports. The Dell OptiPlex 3010 DT is inferior in this regard and packs 8 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.
Unfortunately, only the Dell OptiPlex 5050 MT has a DisplayPort. The Dell OptiPlex 3010 DT does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.
In case your monitor supports HDMI only, you will be happy to hear that both models come with an HDMI port.
SATA slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Each of the two models being compared have 4 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.
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 5050 MT. Sadly, the Dell OptiPlex 3010 DT 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!
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 5050 MT comes with a decent 240 Watt PSU, but the Dell OptiPlex 3010 DT has a more powerful one rated at 250 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.