Dell OptiPlex Tower 7020 2024 vs. Fujitsu Esprimo E520

Comparison and Differences

Dell_OptiPlex_Tower_7020_2024.jpg case front and back pannel

Fujitsu_Esprimo_E520.jpg case front and back pannel

Model
Form factor	Mini Tower	Small
CPU options	Intel Gen 12&13&14 i3/i5/i7;	Intel Gen4 i3/i5/i7; Pentium; Celeron
Chipset	Q670	B85
Dedicated GPU *	GeForce GTX 1650 Super	Radeon RX 6400 Low Profile
RAM	DIMM DDR5-5600	UDIMM DDR3-1600
RAM slots	2	4
RAM speed	5600 MT/s	1600 MT/s
RAM max	64 GB	32 GB
USB ports	(4x) USB-A 2.0; (4x) USB-A 3.0;	(2x) USB-A 3.0; (6x) USB-A 2.0
Video ports	Display Port 1.4a; HDMI 1.4b;	DVI; VGA
Other ports	RJ45(2.5GHz); Audio; Line-Out/In;	RJ45; Headphones; (2x) Mic; Line in; Line out; PS/2; Serial
Optional ports	HDMI 2.1/Displayport/VGA; Serial	Parallel; eSATA; DisplayPort
SATA ports	3	4
PCI slots	PCIe 3.0 x16; (2x) PCIe 3.0 x1;	PCIe 3.0 x16; (2x) PCIe 2.0 x1; PCIe 2.0 x16 (wired x4)
M.2 slots	M.2 2230/2280 (PCIe 3.0 x4, NVMe); M.2 2230 (WiFi/BT)	N.A.
Drive bays	3.5in; (2x) 2.5in; 5.25in (slim);	(2x) 3.5in; 5.25 inch
PSU	180/300 W	280 W
Weight	6.37 kg (14.04 lb)	10.00 kg (24.00 lb)
Released	2024	2014
Manual	link	link
Price**	Check Price	Check 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 Tower 7020 2024 and Fujitsu Esprimo E520

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex Tower 7020 2024 which was released in 2024. The Fujitsu Esprimo E520 is older and entered production in 2014.

If you are looking for the smaller form factor the Fujitsu Esprimo E520 is the right one for you. It is smaller than the Dell OptiPlex Tower 7020 2024 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 OptiPlex Tower 7020 2024 as it is running a newer generation CPU. This is not to say that Fujitsu Esprimo E520 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

The Fujitsu Esprimo E520 has 4 RAM slots while the Dell OptiPlex Tower 7020 2024 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 Tower 7020 2024 is using the faster 5600 MT/s RAM. The Fujitsu Esprimo E520 is slower by supporting RAM speeds of up to 1600 MT/s. Additionally, if you will be needing a lot of RAM, better go for the Dell OptiPlex Tower 7020 2024 as it has the ability to run 64 GB of RAM. The Fujitsu Esprimo E520 can do a bit less at max 32 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.

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 OptiPlex Tower 7020 2024 comes with an HDMI port, while the Fujitsu Esprimo E520 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 Fujitsu Esprimo E520 is better equipped as it comes with 4 SATA slot(s), while the Dell OptiPlex Tower 7020 2024 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 Dell OptiPlex Tower 7020 2024. Sadly, the Fujitsu Esprimo E520 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 Fujitsu Esprimo E520 comes with a decent 280 Watt PSU, but the Dell OptiPlex Tower 7020 2024 has a more powerful one rated at 300 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.