Acer Veriton X2660g vs. Dell OptiPlex 990 DT

Comparison and Differences

Acer_Veriton_X2660g.jpg case front and back pannelDell_OptiPlex_990_DT.jpg case front and back pannel
Model
Form factorSmallDesktop
CPU optionsIntel Gen8 i3/i5/i7; Pentium; CeleronIntel Gen2 i3/i5/i7; Celeron; Pentium;
ChipsetB360Q67
Dedicated GPU *Radeon RX 6400 Low ProfileGeForce GTX 1650 Low Profile
RAMUDIMM DDR4-2666DIMM DDR3-1333
RAM slots24
RAM speed2666 MT/s1333 MT/s
RAM max32 GB16 GB
USB ports(2x) USB-A 3.0; (4x) USB-A 2.0; (2x) USB-A 3.1(10x)USB-A 2.0;
Video portsDisplayPort 1.2; HDMI 1.4; VGADisplayPort 1.2; VGA;
Other portsRJ45; (2x) Mic, Speaker; Line in; Line out; PS/2 ports; SerialRJ45; Hdph; (2x) Mic; Line-Out; Line-In; PS2/COM; Serial; Parallel;
Optional portsSerial; Parallel; Card readerN.A.
SATA ports43
PCI slotsPCIe 3.0 x16; (2x) PCIe 3.0 x1; PCIPCIe 2.0 x16; PCIe 2.0 x4; PCIe 2.0 x1;
M.2 slotsM.2 2280/2230 M-key (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT)N.A.
Drive bays3.5in; 5.25 inch slim3.5in; 2.5in; 5.25in;
PSU180/250 W250 W
Weight5.00 kg (11.02 lb)7.56 kg (16.67 lb)
Released20182011
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 Acer Veriton X2660g and Dell OptiPlex 990 DT

If you are looking for a more modern desktop, then you should go with the Acer Veriton X2660g which was released in 2018. The Dell OptiPlex 990 DT is older and entered production in 2011.

If you are looking for the smaller form factor the Acer Veriton X2660g is the right one for you. It is smaller than the Dell OptiPlex 990 DT 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 Acer Veriton X2660g as it is running a newer generation CPU. This is not to say that Dell OptiPlex 990 DT is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Dell OptiPlex 990 DT has 4 RAM slots while the Acer Veriton X2660g 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 Acer Veriton X2660g is using the faster 2666 MT/s RAM. The Dell OptiPlex 990 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 Acer Veriton X2660g as it has the ability to run 32 GB of RAM. The Dell OptiPlex 990 DT 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. What is nice about the Acer Veriton X2660g, is that it has 2 USB 3.1 port(s) which allows transfer of up to 10Gb/s. Unfortunately, the Dell OptiPlex 990 DT has no such port, thus restricting your transfer speeds significantly. For people who want to use external drives on regular basis, this might be an issue.

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 Acer Veriton X2660g 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 Acer Veriton X2660g is better equipped as it comes with 4 SATA slot(s), while the Dell OptiPlex 990 DT has 3 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 Acer Veriton X2660g. Sadly, the Dell OptiPlex 990 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

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

Acer_Veriton_X2660g_motherboard.jpg motherboard layoutDell_OptiPlex_990_DT_motherboard.jpg motherboard layout