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Comparison Lian Li A3-mATX black vs Jonsbo Z20 orange

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Lian Li A3-mATX black
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Featuresgaming
Form factorDesktopDesktop
Mountverticalvertical
Motherboard supportmicro-ATXmicro-ATX
Board placementverticalvertical
PSU form factorATX (regular)ATX (regular)
Computer case
Dimensions (HxWxD)322x194x443 mm335x198x382 mm
PSU max lenght220 mm180 mm
Graphics card max lenght415 mm363 mm
Fan max height165 mm163 mm
Weight5 kg
Materialsteelsteel
Side panelremovableremovable
Storage
PSU
PSU mounttoptop
3.5" bays11
internal 2.5" compartments23
Expansion slots44
Graphics card vertical mount
Cooling
Fans (back)1x120mm1x120mm
Fans (side)2x140mm
Fans (top)2x140mm2x140mm
Fans (bottom)3x120mm2x140mm
Fan mounts total105
Dust filterbottomtop, bottom, side and back
Liquid cooling support
Liquid cooling system
Liquid cooling (side)360mm
Liquid cooling (top)360mm240mm
Liquid cooling (bottom)360mm
Liquid cooling mounts31
Connectors and functions
Placementon the fronton the front
USB 3.2 gen121
USB C 3.2 gen11
USB C 3.2 gen21
Audio (microphone/headphones)
More features
Front panellatticelattice
Side panel windowmetal gridtempered glass
More features
CPU cooling mount window
graphics card holder
CPU cooling mount window
Color
Added to E-Catalogdecember 2024june 2024
Glossary

Features

The direction in which the body is facing. This parameter is indicated only for models that have a certain specialization and differ markedly from general-purpose cases.

Gaming. Cases designed for high-performance gaming computer systems. They usually have numerous openings for expansion slots and bays for drives (see the corresponding paragraphs), as well as advanced options for installing cooling systems — many “seats” for fans, the ability to use liquid cooling (see “Liquid cooling support”) and etc. In addition, they often stand out due to their design: they can be equipped with decorative lighting, transparent windows, etc.

HTPC. Enclosures for PC multimedia orientation, the so-called Home Theater Personal Computer (HTPC). The characteristic features of such cases are compact size, the presence of additional buttons on the front panel for controlling multimedia (and sometimes a sensor for the remote control) and an advanced design.

PSU max lenght

Possible length of the PSU that can be installed in the case.

Graphics card max lenght

The maximum length of a graphics card that can be installed in this case.

Modern mid-range and top-end video cards with high performance often differ in considerable length, which is why such a card can not fit into any case. So before collecting components, it is worth evaluating the length of the proposed graphics card and choosing a case in which it is guaranteed to fit. This forethought is useful anyway, but it's especially true if you're building a system that requires a powerful graphics adapter, such as a high-end gaming PC or 3D design workstation.

Fan max height

The highest cooler height allowed for this case.

In this case, we mean a cooler used to cool the processor — such a component is found in the vast majority of modern PCs. Height is measured relative to the motherboard.

internal 2.5" compartments

The number of internal 2.5" bays provided in the case design.

Such bays are mainly used for installing internal hard drives and SSD modules; The 2.5" form factor was originally created as "laptop" form factor, but recently it has been increasingly used in components for full-size PCs. At the same time, when evaluating the number of these bays, note that drives are recommended to be installed through a slot; so in Ideally, the number of bays should be twice the planned number of drives.

Also note that some cases use combined bays: initially they have a size of 3.5", but if desired, they can be converted to 2.5". These bays count towards both 3.5-inch and 2.5-inch slots. In fact, this means that the total number of available slots is not always equal to the sum of the number of both. For example, a case with 10 3.5" bays and 6 2.5" bays can have 4 combined bays, and the total number of slots in this case will not be 16, but only 12.

Graphics card vertical mount

The ability to install a graphics card in the case vertically, facing the side panel. To do this, the design provides for an appropriate bracket, and the graphics card is connected to the motherboard with a special extension cable — a riser. This feature is found in open cases and models with a viewing window (see relevant paragraphs), its purpose is primarily aesthetic: a vertically placed graphics card is clearly visible from the outside, which gives the case an original appearance, designed for fans of external modding. But vertical installation does not provide any fundamental practical advantages.

Fans (side)

The number of fan slots on the sides of the case, as well as the size of the fans that these slots are designed for. The presence of the fans themselves in the kit should be specified separately.

The larger the fan, the more advanced it is considered: a large diameter allows you to work efficiently at relatively low speeds, which reduces the noise level and energy consumption. Case fans are available in several standard diameters, and the seats for them can be designed for both one and several sizes — for example, 120 / 140 mm. At the same time, in some models, the available number of seats also depends on the chosen size: for example, there are gaming cases where you can install either one 180 mm fan or four 120 mm fans at once.

Fans (bottom)

The number of fan slots on the underside of the case, as well as the size of the fans that these slots are designed for. The presence of the fans themselves in the kit should be specified separately.

The larger the fan, the more advanced it is considered: a large diameter allows you to work efficiently at relatively low speeds, which reduces the noise level and energy consumption. Case fans are available in several standard diameters, and the seats under them can be designed for both one and several sizes — for example, 120 / 140 mm. At the same time, in some models, the available number of seats also depends on the selected size: for example, it may be possible to install either one 180 mm fan or two 140 mm fans.

Fan mounts total

The total number of places for installing fans provided in the chassis design.

The more performant the system, the more components it includes — the more powerful cooling it will need; therefore, the number of places for fans, usually, is directly related to the size and purpose of the case. It is also worth considering that with the same number, the installation location of individual fans may be different — behind, on the side, on top, etc.
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