Dell OptiPlex 7040 MT vs. Fujitsu Esprimo E520

Comparison and Differences

Dell_OptiPlex_7040_MT.jpg case front and back pannelFujitsu_Esprimo_E520.jpg case front and back pannel
Model
Form factorMini TowerSmall
CPU optionsIntel Gen6 i3/i5/i7Intel Gen4 i3/i5/i7; Pentium; Celeron
ChipsetQ170B85
Dedicated GPU *GeForce GTX 1650 SuperRadeon RX 6400 Low Profile
RAMDIMM DDR4-2133 UDIMM DDR3-1600
RAM slots44
RAM speed2133 MT/s1600 MT/s
RAM max64 GB32 GB
USB ports(6x) USB-A 3.0; (4x) USB-A 2.0; (2x) USB-A 3.0; (6x) USB-A 2.0
Video ports(2x) Display Port 1.2; HDMI 1.4;DVI; VGA
Other portsSerial; (2x) PS2; RJ45; Headset; Line-Out; RJ45; Headphones; (2x) Mic; Line in; Line out; PS/2; Serial
Optional portsVGA; Media Card Reader;Parallel; eSATA; DisplayPort
SATA ports44
PCI slotsPCIe 3.0 x16; PCIe 3.0 x16 (wired x4); PCIe 3.0 x1; PCI; PCIe 3.0 x16; (2x) PCIe 2.0 x1; PCIe 2.0 x16 (wired x4)
M.2 slotsM.2 2280 M-key (PCIe 3.0 x4, NVMe) N.A.
Drive bays3.5in/5.25in; (2x) 2.5in; 5.25in (slim);(2x) 3.5in; 5.25 inch
PSU240 W280 W
Weight8.00 kg (17.64 lb)10.00 kg (24.00 lb)
Released20152014
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 7040 MT and Fujitsu Esprimo E520

If you are looking for a more modern desktop, then you should go with the Dell OptiPlex 7040 MT which was released in 2015. 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 7040 MT 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 7040 MT 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

Both models have have equal amount of ram slots (4 RAM). Usually two RAM slots are more than enough for most cases. However, the count should be taken into account when planning how much and what combination of RAM you are going to need for your system.

The Dell OptiPlex 7040 MT is using the faster 2133 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 7040 MT 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

In total the Dell OptiPlex 7040 MT has 10 USB ports. The Fujitsu Esprimo E520 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.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Dell OptiPlex 7040 MT comes with 2 ports, while the Fujitsu Esprimo E520 has only 1. If you are planning to use multiple monitors, the Dell OptiPlex 7040 MT is the better choice.

The Dell OptiPlex 7040 MT 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 slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Each of the two models being compared have 4 SATA slot(s). Keep in mind that having too few SATA slots might limit your options for connecting additional memory drives.

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 7040 MT. 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 Dell OptiPlex 7040 MT comes with a decent 240 Watt PSU, but the Fujitsu Esprimo E520 has a more powerful one rated at 280 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

Dell_OptiPlex_7040_MT_motherboard.jpg motherboard layoutFujitsu_Esprimo_E520_motherboard.jpg motherboard layout