Acer Veriton X6640g vs. Dell OptiPlex 3090 SFF

Comparison and Differences

Acer_Veriton_X6640g.jpg case front and back pannelDell_OptiPlex_3090_SFF.jpg case front and back pannel
Model
Form factorSmallSmall
CPU optionsIntel Gen6 i3/i5/i7; Pentium; CeleronIntel Gen 10 i3/i5/i7/i9; Pentium
ChipsetQ170Q470
Dedicated GPU *Radeon RX 6400 Low ProfileAMD Radeon RX 6400 Low Profile
RAMUDIMM DDR4-2133DIMM DDR4-2666
RAM slots42
RAM speed2133 MT/s2666 MT/s
RAM max32 GB64 GB
USB ports(4x) USB-A 3.0; (6x) USB-A 2.0;(4x) USB-A 2.0; (4x) USB-A 3.0;
Video ports(2x) DisplayPort 1.2; VGA; DVIDisplay Port 1.4a; HDMI 1.4b;
Other portsRJ45; (2x) Mic, Speaker; Line in; Line out; PS/2 ports; Serial:RJ45; Audio; Line-Out/In;
Optional portsext. VGA; Serial; DVI to VGA adapterHDMI 2.0b/Displayport/VGA;
SATA ports32
PCI slotsPCIe 3.0 x16; PCIe 3.0 x1PCIe 3.0 x16; (2x) PCIe 3.0 x1;
M.2 slotsM.2 2230 (WiFi/BT)M.2 2230/2280 (PCIe 4.0 x4, NVMe); M.2 2230 (WiFi/BT)
Drive bays2.5/3.5in; 5.25 inch3.5in; 2.5in; 5.25in (slim);
PSU220 W200 W
Weight6.00 kg (14.33 lb)5.10 kg (11.25 lb)
Released20152021
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 X6640g and Dell OptiPlex 3090 SFF

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 3090 SFF which was released in 2021. The Acer Veriton X6640g is older and entered production in 2015.

Both models have the same form factor, meaning reoughtly they have the same phiysical size and form.

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 3090 SFF as it is running a newer generation CPU. This is not to say that Acer Veriton X6640g is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Acer Veriton X6640g has 4 RAM slots while the Dell OptiPlex 3090 SFF 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 3090 SFF is using the faster 2666 MT/s RAM. The Acer Veriton X6640g is slower by supporting RAM speeds of up to 2133 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell OptiPlex 3090 SFF as it has the ability to run 64 GB of RAM. The Acer Veriton X6640g can do a bit less at max 32 GB. Most of the times, this should be sufficient for the majority of users.

Ports

In total the Acer Veriton X6640g has 10 USB ports. The Dell OptiPlex 3090 SFF 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.

None of the models has an HDMI port. If your monitor supports only the HDMI interface, you will need to buy an adapter. Such adapters are cheap so nothing to worry about.

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 X6640g is better equipped as it comes with 3 SATA slot(s), while the Dell OptiPlex 3090 SFF has 2 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 3090 SFF. Sadly, the Acer Veriton X6640g 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 3090 SFF comes with a decent 200 Watt PSU, but the Acer Veriton X6640g has a more powerful one rated at 220 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

Acer_Veriton_X6640g_motherboard.jpg motherboard layoutDell_OptiPlex_3090_SFF_motherboard.jpg motherboard layout