Dell OptiPlex 790 DT vs. Dell Vostro 5890

Comparison and Differences

Dell_OptiPlex_790_DT.jpg case front and back pannelDell_Vostro_5890.jpg case front and back pannel
Model
Form factorDesktopMini Tower
CPU optionsIntel Gen2 i3/i5/i7; Celeron; Pentium;Intel Gen10&11 i3/i5/i7; Celeron; Pentium;
ChipsetQ65B560
Dedicated GPU *GeForce GTX 1650 Low ProfileGeForce RTX 2070 Super
RAMDIMM DDR3-1333DIMM DDR4-2666/2933/3200
RAM slots22
RAM speed1333 MT/s3200 MT/s
RAM max16 GB64 GB
USB ports(10x)USB-A 2.0; (4x) USB-A 3.0; (4x) USB-A 2.0; USB 3.0 Type C;
Video portsDisplayPort 1.2; VGA;HDMI 1.4b; DisplayPort 1.4;
Other portsRJ45; Hdph; (2x) Mic; Line-Out; Line-In; PS2/COM; Serial; Parallel;RJ45; Headset; Mic; Line-Out;
Optional portsN.A.SD card reader
SATA ports33
PCI slotsPCIe 2.0 x16; PCIe 2.0 x4; PCIe 2.0 x1;PCIe 3.0 x16; (2x) PCIe 3.0 x1; PCI
M.2 slotsN.A.M.2 2280/2230 M-key (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT);
Drive bays3.5in; 2.5in; 5.25in;3.5in; 9.5mm
PSU250 W260/460W
Weight7.56 kg (16.67 lb)8.68 kg (19.14 lbs)
Released20112021
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 790 DT and Dell Vostro 5890

If you are looking for a more modern desktop, then you should go with the Dell Vostro 5890 which was released in 2021. The Dell OptiPlex 790 DT is older and entered production in 2011.

If you are looking for the smaller form factor the Dell OptiPlex 790 DT is the right one for you. It is smaller than the Dell Vostro 5890 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 Vostro 5890 as it is running a newer generation CPU. This is not to say that Dell OptiPlex 790 DT 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 Vostro 5890 is using the faster 3200 MT/s RAM. The Dell OptiPlex 790 DT is slower by supporting RAM speeds of up to 1333 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell Vostro 5890 as it has the ability to run 64 GB of RAM. The Dell OptiPlex 790 DT can do a bit less at max 16 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the Dell Vostro 5890 has 9 USB ports. The Dell OptiPlex 790 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.

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.

The Dell Vostro 5890 comes with an HDMI port, while the Dell OptiPlex 790 DT 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 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 3 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 Vostro 5890. Sadly, the Dell OptiPlex 790 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!

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 790 DT comes with a decent 250 Watt PSU, but the Dell Vostro 5890 has a more powerful one rated at 460 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_790_DT_motherboard.jpg motherboard layoutDell_Vostro_5890_motherboard.jpg motherboard layout