Dell OptiPlex 3020
Yes. 2 slots, up to 16 GB seen working.
It takes DDR3-1600 full-size sticks (DIMM).
- Slots
- 2 DIMM slots
- Type
- DDR3-1600 240-pin DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 GB maximum
- How sure
- 126 of 126 reports show this layout
Worked out from 126 hardware reports of this desktop. Sources and method. Updated 10 Nov 2026.
It takes a 2.5-inch SATA SSD.
The machines in the reports have a SATA controller and the firmware lists 2 SATA ports. A 2.5-inch SATA SSD fits a 2.5-inch bay, or a 3.5-inch bay with an adapter bracket.
- Drive type
- SATA
- SATA ports
- 2 listed by the firmware
From 256 PCI device reports and the firmware's port list. Sources and method. Updated 10 Nov 2026.
Illustration Check the label on the power supply.
We don't have this model's power supply rating. It is printed on the supply's sticker, inside the case next to its fan. Prebuilt desktops often use a supply shaped for their case, so match the shape and the plugs as well as the watts. Small cases take a slim supply.
- Rating
- On the supply's label
How to read a power supply label. Sources and method. Updated 10 Nov 2026.
Illustration Processors seen in these desktops.
Processors in the reports: Core i5-4590 (45), Core i3-4160 (24), Core i5-4570 (19), Core i3-4130 (10), Core i3-4150 (9), Pentium G3220 (8). Prebuilt desktops often only take processors from the generation they shipped with, so stay with the ones listed.
- Seen working
- Core i5-4590, Core i3-4160, Core i5-4570
- How sure
- From 126 reports
From the processor records in 126 hardware reports. Sources and method. Updated 10 Nov 2026.
Illustration It has a full-length (x16) slot for a graphics card.
Cards in the reports: GeForce GT 710 (6), GeForce GT 1030 (5), Radeon HD 8490 / R5 235X OEM (3), Radeon HD 5000/6000/7350/8350 Series (3), Radeon HD 7470/8470 / R5 235/310 OEM (3), GeForce GT 610 (3). 100% of these machines report a small case. A small case takes low-profile cards only, and its power supply may not feed a card that needs its own power cable.
- x16 slots
- At least 1, listed by the firmware
- Seen working
- GeForce GT 710, GeForce GT 1030, Radeon HD 8490 / R5 235X OEM
- Case
- 100% report a small case
From 256 PCI device reports and the firmware's slot table. Sources and method. Updated 10 Nov 2026.
Illustration Questions
Can I upgrade the RAM in the Dell OptiPlex 3020?
Yes. 2 slots, up to 16 GB seen working. It takes DDR3-1600 full-size sticks (DIMM).
What type of RAM does the Dell OptiPlex 3020 use?
DDR3-1600 full-size sticks (DIMM, 240-pin).
How much RAM can the Dell OptiPlex 3020 take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.
What SSD does the Dell OptiPlex 3020 take?
It takes a 2.5-inch SATA SSD. The machines in the reports have a SATA controller and the firmware lists 2 SATA ports. A 2.5-inch SATA SSD fits a 2.5-inch bay, or a 3.5-inch bay with an adapter bracket.
What processor can I put in the Dell OptiPlex 3020?
Processors seen in these desktops. Processors in the reports: Core i5-4590 (45), Core i3-4160 (24), Core i5-4570 (19), Core i3-4130 (10), Core i3-4150 (9), Pentium G3220 (8). Prebuilt desktops often only take processors from the generation they shipped with, so stay with the ones listed.
Can I add a graphics card to the Dell OptiPlex 3020?
It has a full-length (x16) slot for a graphics card. Cards in the reports: GeForce GT 710 (6), GeForce GT 1030 (5), Radeon HD 8490 / R5 235X OEM (3), Radeon HD 5000/6000/7350/8350 Series (3), Radeon HD 7470/8470 / R5 235/310 OEM (3), GeForce GT 610 (3). 100% of these machines report a small case. A small case takes low-profile cards only, and its power supply may not feed a card that needs its own power cable.
Is this my desktop?
Check the model name on the front or the label of the case. It should read OptiPlex 3020.