JOYJOM 4.3L Aluminum Mini-ITX Case vs JOYJOM 7.3L Slim Micro-ATX Case (2026): Key Differences
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are looking at the joyjom aluminum mini itx case vs micro atx case PC options from JOYJOM. Both are compact small form factor builds under 2 liters. They share black finishes and support for small power supplies. The main difference is motherboard size. One fits only Mini-ITX boards. The other accepts Micro-ATX, DTX, and Mini-ITX. This changes your component choices and case dimensions significantly.
Key differences
| Aspect | JOYJOM 4.3L Aluminum Mini-ITX Case | JOYJOM 7.3L Slim Micro-ATX Case |
|---|---|---|
| Motherboard Support | Standard Mini-ITX only | Micro-ATX, DTX, and Mini-ITX |
| Case Volume | 4.3L | 7.3L |
| Material | 2.0mm Aluminum Alloy | 0.8mm SPCC Steel |
| Front Panel I/O | Not listed | 2x USB 3.0, 2x USB 2.0, HD Audio, Power Button |
| Included Riser Cable | PCIe 3.0 Riser included | Not listed |
| Dimensions | 7.24 x 4.09 x 8.78 inches | 10.2 x 3.62 x 12.2 inches |
Which one should you choose?
Choose JOYJOM 4.3L Aluminum Mini-ITX Case if
- You need the smallest possible footprint at 4.3L.
- You prefer aluminum construction for passive heat dissipation.
- You are building a strict Mini-ITX system and need a included riser cable.
Choose JOYJOM 7.3L Slim Micro-ATX Case if
- You want to use a Micro-ATX or DTX motherboard.
- You need front panel USB ports and audio jacks.
- You prefer a steel chassis that supports vertical or horizontal placement.
Verdict: The 4.3L aluminum case suits users who prioritize extreme compactness and passive cooling potential with Mini-ITX parts. The 7.3L steel case is better for those who need more motherboard flexibility and front connectivity. Choose based on your specific motherboard size and I/O requirements.
JOYJOM Case Size and Board Fit
Motherboard support
Product A supports only standard Mini-ITX motherboards, measuring 17x17cm. This limits you to the smallest board form factor. Product B is more flexible. It supports Micro-ATX boards at 24.4x24.4cm. It also accepts DTX and standard ITX sizes. If you plan to use a larger board with more expansion slots, Product B is the clear choice. Product A is strictly for Mini-ITX builds. This difference dictates your component compatibility from the start.
Case volume
Product A has a compact 4.3L volume. Its dimensions are 18.4x10.4x22.3 cm. Product B is larger at 7.3L. Its dimensions are roughly 7.3x4.1x8.8 inches converted, or 18.4x10.4x22.3 cm is actually A. Wait, B is 7.3L. A is 4.3L. The smaller volume of Product A makes it easier to fit in tight spaces. Product B requires more desk or floor space. Choose Product A for maximum compactness. Choose Product B if you need extra room for components.
Material build
Product A uses 2.0mm Aluminum Alloy for the body. This material offers good heat dissipation and a sturdy feel. Product B uses 0.8mm SPCC steel. Steel is generally less expensive and lighter but may flex more than thick aluminum. The thicker aluminum in Product A suggests better rigidity and passive cooling potential. Product B’s steel construction is functional but less premium in feel. Your choice depends on whether you prioritize thermal performance or standard steel durability.
Connectivity
Product B includes a front panel with 2x USB 3.0, 2x USB 2.0, HD Audio, and a Power Button. This provides easy access to common ports. Product A does not list any front panel interfaces in its data. It only mentions a PCIe 3.0 Riser Cable in the box. You will likely need to route cables to the rear I/O of the motherboard for Product A. Product B offers superior convenience for everyday use with accessible front ports.
Cooling clearance
Product A restricts CPU coolers to less than 36mm in height. This is very tight and limits you to low-profile air coolers. Product B allows CPU coolers between 63mm and 73mm, depending on SSD placement. This range supports many standard low-profile coolers. The significantly higher clearance in Product B makes it much easier to build a cooling solution that keeps your CPU running cool. Product A requires specialized, very short coolers.
Storage options
Both cases support two 2.5-inch SSDs. Product A limits these to under 9mm thickness. Product B supports two 2.5-inch SSDs or one 3.5-inch SSD. The ability to mount a 3.5-inch drive in Product B adds flexibility if you need traditional hard drive storage. Product A is strictly for thin SSDs. If you do not need 3.5-inch drives, both are equal. If you do, Product B is the only option.
Which JOYJOM Case Fits Your Build
Mini-ITX users needing extreme compactness
Product A offers a tiny 4.3L volume with a 2.0mm aluminum alloy body. This material provides better heat dissipation for small builds. It includes a PCIe 3.0 riser cable, which helps fit graphics cards in tight spaces. If you prioritize minimal footprint and efficient cooling for a Mini-ITX system, this slim profile is the practical choice for your desktop.
Users wanting Micro-ATX flexibility and ports
Product B supports Micro-ATX and DTX motherboards, giving you more board options than the ITX-only alternative. It features front panel USB 3.0 and USB 2.0 ports for easy connectivity. The 7.3L volume accommodates larger components and up to a 73mm CPU cooler. If you need versatile board support and convenient front I/O, this case suits your needs best.
Builders prioritizing chassis material durability
Product A uses a 2.0mm aluminum alloy body, which is thicker and more rigid than the 0.8mm SPCC steel used in Product B. This heavier construction can offer better protection for internal components. The aluminum also acts as a heatsink. If you prefer a sturdier, metal-heavy chassis over a lighter steel option, the thicker material in this case is a clear advantage for your build.
The products compared
JOYJOM 4.3L Aluminum Mini-ITX Case
Best for: Compact Mini-ITX desktop builds
- Motherboard Support
- Standard ITX
- Case Type
- SFF
- Case Volume
- 4.3L
- Tower Size
- Small Form Factor
- Use
- Gaming
- Compatible Device
- Graphics Card
View on Amazon: JOYJOM 4.3L Aluminum Mini-ITX Case Affiliate link
This 4.3L small form factor case is built from 2.0mm aluminum alloy for heat dissipation. It supports standard Mini-ITX motherboards and includes a 18.5cm PCIe 3.0 riser cable. You can fit a graphics card up to 17x10x4cm and a CPU cooler under 36mm high. The compact 18.4x10.4x22.3 cm design suits users needing a tiny desktop build.
Pros
- Includes a 18.5cm PCIe 3.0 riser cable
- 2.0mm aluminum alloy body for passive cooling
- Supports standard 17x17cm Mini-ITX motherboards
- Compact 4.3L volume fits small spaces
Cons
- Strict 36mm CPU cooler height limit
- Supports only two 2.5-inch SSDs
- Requires a Flex-Small 1U power supply
Good fit if
- You need a tiny desktop for Mini-ITX parts
- You want aluminum construction for heat dissipation
- You plan to use a low-profile CPU cooler
Skip if
- You require Micro-ATX or larger motherboard support
- You need to install a standard ATX power supply
- You use a CPU cooler taller than 36mm
Verdict: JOYJOM 4.3L Aluminum Mini-ITX Case fits users building extremely compact desktops with Mini-ITX components. It is a solid option for small spaces but limits your choice of cooling and storage.
JOYJOM 7.3L Slim Micro-ATX Case
Best for: Micro-ATX builds in tight spaces
- Motherboard Support
- Micro ATX, DTX, ITX
- Case Volume
- 7.3L
- Dimensions
- 10.2 × 3.62 × 12.2 inches
View on Amazon: JOYJOM 7.3L Slim Micro-ATX Case Affiliate link
This 7.3L case supports Micro-ATX, DTX, and ITX motherboards. It measures 12.2 by 10.2 by 3.62 inches. The 0.8mm SPCC body allows vertical or horizontal placement. You get two USB 3.0 and two USB 2.0 ports on the front. It fits half-height graphics cards and small power supplies. This compact build suits tight spaces.
Pros
- Supports Micro-ATX, DTX, and ITX motherboards
- Slim 7.3L volume fits small spaces
- Front panel includes two USB 3.0 ports
- Allows vertical or horizontal placement
Cons
- No PCIe riser cable included for GPU
- Limited to half-height graphics cards
- CPU cooler height restricted to 63mm-73mm
Good fit if
- You need a Micro-ATX case in a tight space
- You use a half-height graphics card
- You want vertical or horizontal placement options
Skip if
- You require full-height expansion slots
- You need a PCIe riser cable included
- You plan to use large air coolers
Verdict: JOYJOM 7.3L Slim Micro-ATX Case fits users needing Micro-ATX support in a compact 7.3L footprint with flexible placement options.
Specifications side by side
| Spec | JOYJOM 4.3L Aluminum Mini-ITX Case | JOYJOM 7.3L Slim Micro-ATX Case |
|---|---|---|
| Motherboard Support | Standard ITX | Micro ATX, DTX, ITX |
| Case Type | SFF | not stated |
| Case Volume | 4.3L | 7.3L |
| Tower Size | Small Form Factor | not stated |
| Use | Gaming | not stated |
| Compatible Device | Graphics Card | not stated |
| Dimensions | 7.24 × 4.09 × 8.78 inches | 10.2 × 3.62 × 12.2 inches |
| Weight | 2.51 pounds | not stated |
| Color | Black | Black |
| Size | not stated | 7.3L |
| Model | not stated | MATX Case |
Frequently asked questions
Which JOYJOM case is smaller?
The JOYJOM 4.3L Aluminum Mini-ITX Case is the smaller option. It measures 4.09 inches in width, 8.78 inches in height, and 7.24 inches in length. In contrast, the JOYJOM 7.3L Slim Micro-ATX Case is larger, with dimensions of 3.62 inches wide, 12.2 inches high, and 10.2 inches long. The volume difference reflects these size variations.
Can the smaller case fit a Micro-ATX motherboard?
No, the JOYJOM 4.3L Aluminum Mini-ITX Case does not support Micro-ATX motherboards. It is designed exclusively for Mini-ITX boards. If you need to use a larger Micro-ATX motherboard, you must choose the JOYJOM 7.3L Slim Micro-ATX Case, which explicitly supports that form factor.
Does the JOYJOM 7.3L case support Mini-ITX boards?
Yes, the JOYJOM 7.3L Slim Micro-ATX Case supports Mini-ITX motherboards. It also accepts Micro-ATX boards. This flexibility allows you to use smaller boards in a slightly larger chassis, offering more internal space for components compared to the dedicated Mini-ITX option.
What is the weight difference between the two cases?
The JOYJOM 4.3L Aluminum Mini-ITX Case weighs 2.51 pounds. The weight of the JOYJOM 7.3L Slim Micro-ATX Case is not specified in the available data. However, the larger dimensions of the 7.3L model suggest it may be heavier, though exact figures are unavailable.
Are both cases black?
Yes, both cases feature a black color finish. The JOYJOM 4.3L Aluminum Mini-ITX Case is listed in black. The JOYJOM 7.3L Slim Micro-ATX Case is also available in black. This consistent color option helps them match various desktop setups.
Which case is better for gaming?
The JOYJOM 4.3L Aluminum Mini-ITX Case is explicitly listed for gaming use. It supports graphics cards and is designed for compact gaming builds. The JOYJOM 7.3L Slim Micro-ATX Case is described as suitable for tight spaces but does not have gaming listed as its primary use case in the provided data.
Do both cases support graphics cards?
The JOYJOM 4.3L Aluminum Mini-ITX Case lists compatibility with graphics cards. The JOYJOM 7.3L Slim Micro-ATX Case data does not explicitly mention graphics card support. You should verify GPU length limits for the 7.3L model separately, as the provided specifications do not confirm this detail.