Fujitsu Esprimo G558 vs. Fujitsu Esprimo Q520

Comparison and Differences

Fujitsu_Esprimo_G558.jpg case front and back pannelFujitsu_Esprimo_Q520.jpg case front and back pannel
Model
Form factorMicroMicro
CPU optionsIntel Gen8&9 i3/i5/i7; Pentium; CeleronIntel Gen4 i3/i5/i7
ChipsetH310H81
Dedicated GPU *N.A.N.A.
RAMSODIMM DDR4-2666SODIMM DDR3-1600
RAM slots22
RAM speed2666 MT/s1600 MT/s
RAM max32 GB16 GB
USB ports(3x) USB-A 3.0; (3x) USB-A 2.0(2x) USB-A 3.0; (4x) USB-A 2.0
Video portsDisplayPort 1.2; HDMIDisplayPort 1.2; DVI
Other portsRJ45; Headphones;RJ45; Line in; Line out; Card reader
Optional portsVGA; USB-C 3.0VGA (DVI to VGA adapter)
SATA ports12
PCI slotsN.A.N.A.
M.2 slotsM.2 2280/2230 M-key (PCIe 2.0 x2, NVMe); M.2 2230 (WiFi/BT)N.A.
Drive bays2.5in2.5in; 5.25 inch
PSU65 W65 W
Weight0.80 kg (1.76 lb)1.60 kg (3.53 lb)
Released20182014
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 Fujitsu Esprimo G558 and Fujitsu Esprimo Q520

If you are looking for a more modern desktop, then you should go with the Fujitsu Esprimo G558 which was released in 2018. The Fujitsu Esprimo Q520 is older and entered production in 2014.

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 Fujitsu Esprimo G558 as it is running a newer generation CPU. This is not to say that Fujitsu Esprimo Q520 is bad - it can still run some powerful CPUs, albeit being an older generation.

Memory

Both models have have equal amount of ram slots (2 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 Fujitsu Esprimo G558 is using the faster 2666 MT/s RAM. The Fujitsu Esprimo Q520 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 Fujitsu Esprimo G558 as it has the ability to run 32 GB of RAM. The Fujitsu Esprimo Q520 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 6. 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.

DisplayPort is crucial for any desktop machine. It is good to see that both models are featuring DisplayPorts. However, the Fujitsu Esprimo G558 comes with 2 ports, while the Fujitsu Esprimo Q520 has only 1. If you are planning to use multiple monitors, the Fujitsu Esprimo G558 is the better choice.

The Fujitsu Esprimo G558 comes with an HDMI port, while the Fujitsu Esprimo Q520 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 Q520 is better equipped as it comes with 2 SATA slot(s), while the Fujitsu Esprimo G558 has 1 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 Fujitsu Esprimo G558. Sadly, the Fujitsu Esprimo Q520 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 65 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

Fujitsu_Esprimo_G558_motherboard.jpg motherboard layoutFujitsu_Esprimo_Q520_motherboard.jpg motherboard layout