Dell OptiPlex 990 DT vs. Dell Vostro 260s

Comparison and Differences

Dell_OptiPlex_990_DT.jpg case front and back pannelDell_Vostro_260s.jpg case front and back pannel
Model
Form factorDesktopSmall
CPU optionsIntel Gen2 i3/i5/i7; Celeron; Pentium;Intel Gen2 i3/i5/i7; Pentium;
ChipsetQ67H61
Dedicated GPU *GeForce GTX 1650 Low ProfileGeForce GTX 1650 Low Profile
RAMDIMM DDR3-1333DIMM DDR3-1333
RAM slots42
RAM speed1333 MT/s1333 MT/s
RAM max16 GB8 GB
USB ports(10x)USB-A 2.0; (8x)USB-A 2.0;
Video portsDisplayPort 1.2; VGA;HDMI 1.2; VGA;
Other portsRJ45; Hdph; (2x) Mic; Line-Out; Line-In; PS2/COM; Serial; Parallel;RJ45; Hdph; (2x) Mic; Line-Out; Line-In; Media Card Reader
Optional portsN.A.N/A
SATA ports34
PCI slotsPCIe 2.0 x16; PCIe 2.0 x4; PCIe 2.0 x1;PCIe 2.0 x16; (3x) PCIe 2.0 x1;
M.2 slotsN.A.N.A.
Drive bays3.5in; 2.5in; 5.25in;3.5in; 5.25in;
PSU250 W250 W
Weight7.56 kg (16.67 lb)7.60 kg (16.76 lbs)
Released20112010
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 990 DT and Dell Vostro 260s

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 990 DT which was released in 2011. The Dell Vostro 260s is older and entered production in 2010.

If you are looking for the smaller form factor the Dell Vostro 260s is the right one for you. It is smaller than the Dell OptiPlex 990 DT and will fit more easily under your desk.

Processor

The two models have the same generation of Intel processors. We think that the 2 generation of Intel Processors have enough power to execute all of the home and office tasks that most people will care to do.

Memory

The Dell OptiPlex 990 DT has 4 RAM slots while the Dell Vostro 260s 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.

None of the desktops has an advantage when it comes to the speed of the RAM being used. Both models support RAM speeds of up to 1333. Additionally, if you will be needing a lot of RAM, better go for the Dell OptiPlex 990 DT as it has the ability to run 16 GB of RAM. The Dell Vostro 260s can do a bit less at max 8 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.

Unfortunately, only the Dell OptiPlex 990 DT has a DisplayPort. The Dell Vostro 260s does not have one? Don't worry though, nowadays video adapters are cheap and you can get almost any combination of conversion types.

The Dell Vostro 260s comes with an HDMI port, while the Dell OptiPlex 990 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 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 Vostro 260s is better equipped as it comes with 4 SATA slot(s), while the Dell OptiPlex 990 DT has 3 slot(s).

M.2 SSD interface allows you to transfer data with higher speeds compared to the old SATA interface. Unfortunately, neither the Dell OptiPlex 990 DT, nor the Dell Vostro 260s has one. However, you can still use a SATA SSD drive which should give you satisfactory performance.

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

Looking at the Power Supply Unit (PSU) of the two models we don't see any differences. For either of them you get a maximum power of 250 Watts. However be careful, many models have more than one power supply option. When buying your computer, it is a good idea to get a version with the most powerful PSU. This will potentially allow you to upgrade to a more powerful GPU for example.

Motherboard

Dell_OptiPlex_990_DT_motherboard.jpg motherboard layoutDell_Vostro_260s_motherboard.jpg motherboard layout