Looking Beyond the Lian Li A4-H2O Small Case? 6 Alternatives Worth a Look

How Each Alternative Compares

The SilverStone SG13B-Q measures 12 inches wide, 10 inches high, and 14 inches long, weighing 6 pounds. Unlike the Lian Li A4-H2O, which requires an SFX or SFX-L power supply, this case accommodates a standard ATX power supply. That flexibility lets you repurpose an existing desktop power unit. However, you give up the A4-H2O's dual-fan 240 liquid radiator support, as the SG13B-Q only fits single-fan liquid radiators. You also lose room for longer graphics cards, since this chassis limits card length to 10.5 inches instead of the triple-slot space in the A4-H2O. Choose this model if you want a compact Mini-ITX footprint using standard ATX parts.

SilverStone Slim Mini-ITX Case with Handle

The SilverStone ML08B-H uses a slim console form factor measuring 15 inches wide, 3.43 inches high, and 14.6 inches long. It includes an integrated top handle and supports dual-orientation placement, making it far easier to transport than the Lian Li A4-H2O. It handles graphics cards up to 13 inches long. In exchange for this 3.43-inch slim profile, you sacrifice the 240 AIO liquid radiator clearance found in the A4-H2O. At 7.72 pounds, it is slightly heavier than the 6.39-pound A4-H2O. Pick the ML08B-H if you need a portable Mini-ITX system for travel and prefer a console-style layout over water cooling.

The FSP CMT710RED open-frame chassis targets multi-radiator liquid cooling setups rather than space-saving efficiency. It measures 455 millimeters wide and 530 millimeters high, built with aluminum and tempered glass in a dual-chamber configuration. Unlike the Lian Li A4-H2O, which limits liquid cooling to a single 240 radiator, this open structure accommodates dual radiators for extensive custom loops. What you give up is the compact 11-liter footprint and portability of the A4-H2O; this case takes up considerably more desk area. Select this FSP enclosure if you want a dedicated gaming showcase with dual-radiator cooling capacity rather than a small enclosed Mini-ITX sandwich chassis.

The Fractal Design Pop Mini Silent prioritizes acoustic reduction and drive expandability over small-form-factor volume. Measuring 8.46 inches wide, 15.5 inches high, and 17 inches long with a 16.4-pound weight, it offers sound dampening, 5.25-inch optical bays, and extensive internal storage mounts. The Lian Li A4-H2O offers no 5.25-inch bays and focuses strictly on compact volume. In exchange for the Pop Mini's quiet construction and extra drive capacity, you lose the compact 11-liter desk footprint and light 6.39-pound carry weight of the A4-H2O. Choose the Pop Mini Silent if you require silence and internal drive expansion instead of a dense sandwich-style layout.

The Goodisory Mini-ITX Case delivers an ultra-compact steel frame measuring 2.4 inches wide, 7.5 inches high, and 8 inches long, weighing only 2 pounds. Unlike the 11-liter Lian Li A4-H2O, this chassis mounts directly to the back of a display using VESA mounts and runs via a compact Pico adapter. It completely eliminates desk clutter. However, you give up all the performance cooling and component clearance of the A4-H2O, which includes support for triple-slot graphics cards, SFX power supplies, and 240 AIO liquid radiators. Pick this Goodisory model if you need an ultra-small, monitor-mounted build for basic tasks without dedicated graphics cards.

The Yoqanr Open Frame Test Bench uses a vertical aluminum skeleton built specifically for Mini-ITX motherboards and easy graphics card access. Unlike the enclosed Lian Li A4-H2O, which requires panel removal to reach parts, this open frame leaves every component exposed for frequent hardware swaps and testing. It provides flexible mounting for power supplies and radiators without standard enclosure walls. The downside compared to the A4-H2O is the lack of physical protection and panel-guided airflow, as the A4-H2O uses an aluminum and steel sandwich shell to contain components. Choose this Yoqanr test bench if you frequently change graphics cards and need direct component access.

Quick picks

Our 7 picks

1 Best overall

Lian Li A4-H2O Mini-ITX Case

Best for: Compact builds with 240 AIO liquid cooling

Motherboard Support

Mini ITX

Case Type

Small Form Factor

Radiator Support

240

Case Volume

11-liter

Dimensions

15.5 × 7.5 × 12 inches

Weight

6.39 pounds

View on Amazon: Lian Li A4-H2O Mini-ITX Case

The Lian Li A4-H2O is an 11-liter small form factor case built with an aluminum exterior and an SPCC steel interior. It features a sandwich layout that accommodates a Mini-ITX motherboard, a triple-slot GPU, and a 240 AIO radiator. Fully removable panels assist with hardware installation and cable routing. This chassis suits you if you need compact desk dimensions while housing dedicated liquid cooling and full-sized graphics hardware.

Pros

• Compact 11-liter volume with sandwich layout
• Clearance for a 240 AIO liquid cooler
• Supports full triple-slot graphics cards
• Fully removable exterior panels for installation access

Cons

• Limited to Mini-ITX motherboards
• Requires SFX or SFX-L power supplies

Good fit if

• You build with a Mini-ITX motherboard and SFX power supply.
• You plan to run a 240 AIO liquid cooler.
• You require space for a triple-slot graphics card in an 11-liter footprint.

Skip if

• You use a standard ATX power supply.
• You need support for Micro-ATX or standard ATX motherboards.

Verdict: Lian Li A4-H2O Mini-ITX Case delivers an 11-liter sandwich layout that packages a triple-slot GPU and 240 AIO radiator into a compact footprint. Removable panels and SFX compatibility make it an efficient enclosure for small form factor setups.

2 Best budget

SilverStone Slim Mini-ITX Case with Handle

Best for: portable Mini-ITX builds with long graphics cards

Motherboard Support

Mini-ITX

Case Type

Slim Small Form Factor

Max GPU Length

13 inches

Dimensions

14.6 × 15 × 3.43 inches

Weight

7.72 pounds

View on Amazon: SilverStone Slim Mini-ITX Case with Handle

The SilverStone Slim Mini-ITX Case with Handle is a compact chassis designed for portable desktop builds. It measures 3.43 inches tall, 15 inches wide, and 14.6 inches long, supporting Mini-ITX motherboards and SFX power supplies. You can install a graphics card up to 13 inches long using its independent expansion slot design. This case suits you if you need a slim build that sets up horizontally or vertically and travels easily.

Pros

• Supports graphics cards up to 13 inches
• Includes removable carrying handle
• Supports horizontal or vertical orientation
• Tool-less drive cage design

Cons

• Limited to Mini-ITX motherboards
• Requires an SFX power supply
• Slim 3.43-inch height restricts internal clearance

Good fit if

• You need a portable Mini-ITX chassis with a carrying handle.
• You plan to install a full-length graphics card up to 13 inches.
• You want flexible placement in either horizontal or vertical orientation.

Skip if

• You plan to use a standard ATX power supply.
• You need a case that fits Micro-ATX or ATX motherboards.

Verdict: SilverStone Slim Mini-ITX Case with Handle delivers a compact profile with 13-inch graphics card support and a built-in handle. It provides a functional, dual-orientation layout for portable small-form-factor setups.

3 Also great

Mechanic Master Mini-ITX Case with Handle

Best for: portable compact builds using short graphics cards

Motherboard Support

ITX

Case Type

Mini ITX

Max GPU Length

245mm

Case Volume

9.9L

Dimensions

9.8 × 6.3 × 9.8 inches

Weight

5.51 pounds

View on Amazon: Mechanic Master Mini-ITX Case with Handle

This 9.9-liter Mini-ITX chassis gives you a compact footprint with an integrated aluminum carry handle for portability. It accommodates air coolers up to 135mm tall, SFX power supplies, and graphics cards up to 245mm in length. It suits you if you need a transportable small-form-factor desktop that fits standard air cooling on a cramped desk.

Pros

• Compact 9.9-liter total volume
• Integrated aluminum alloy carry handle
• Supports CPU air coolers up to 135mm tall
• Compatible with standard SFX power supplies

Cons

• GPU clearance caps at 245mm in length
• Does not support full-size ATX power supplies

Good fit if

• You want a sub-10-liter chassis with a built-in carry handle.
• You use a compact graphics card measuring 245mm or less.
• You rely on a dedicated air cooler up to 135mm in height.

Skip if

• You use a graphics card longer than 245mm.
• You need clearance for an ATX power supply.

Verdict: Mechanic Master Mini-ITX Case with Carry Handle delivers a 9.9-liter setup for builders who need regular travel portability and up to 135mm air cooler clearance.

4 Best premium

Cooler Master NR200P V2 Mini-ITX Case

Best for: large GPUs and 280mm radiator setups

Motherboard Support

Mini-ITX

Side Panel

Tempered Glass or Vented Steel

Radiator Support

280mm

Max GPU Length

357mm

Case Volume

18.25L

Dimensions

14.7 × 7.28 × 11.5 inches

View on Amazon: Cooler Master NR200P V2 Mini-ITX Case

This 18.25-liter Mini-ITX chassis accommodates high-end hardware in a compact footprint. You get clearance for graphics cards up to 357mm mounted vertically via an included PCIe 4.0 riser cable. It supports top-mounted radiators up to 280mm and comes with both tempered glass and vented steel side panels. It suits you if you need large GPU and liquid-cooler clearances.

Pros

• Supports top radiators up to 280mm
• Fits graphics cards up to 357mm in length
• Includes PCIe 4.0 riser cable for vertical GPU mounting
• Comes with both tempered glass and vented steel side panels

Cons

• Strictly fits SFX power supplies
• Larger 18.25-liter volume than sub-15-liter alternatives

Good fit if

• You plan to cool your CPU with a 240mm or 280mm radiator.
• You need clearance for an extra-long graphics card up to 357mm.
• You want the option to swap between tempered glass and ventilated side panels.

Skip if

• You want to use a standard ATX power supply.
• You prefer horizontal GPU mounting without a riser cable.

Verdict: Cooler Master NR200P V2 Mini-ITX Case fits builders who want full-sized 357mm GPUs and 280mm liquid cooling while keeping desk footprint under 19 liters.

5 Best mini-tower

Jonsbo TK-0 Black Mini Tower

Best for: compact desktop showcase builds with short GPUs

Motherboard Support

ITX, DTX

Case Type

Mini Tower, SFF

Side Panel

Dual-Curved Glass

Max GPU Length

230mm

Dimensions

9.8 × 9.3 × 11.2 inches

View on Amazon: Jonsbo TK-0 Black Mini Tower

This mini-ITX mini-tower features a dual-chamber steel and aluminum frame with 16mm wood veneer and 270-degree curved glass. You get clearance for graphics cards up to 230mm long, CPU air coolers up to 137mm tall, and SFX power supplies up to 160mm. It suits you if you want a compact showcase chassis with horizontal or vertical desktop placement.

Pros

• 270-degree dual-curved glass panel with walnut wood veneer accent
• Dual-chamber layout supports both vertical and horizontal desktop placement
• Supports SFX power supplies up to 160mm in length
• Accommodates CPU air coolers up to 137mm in height

Cons

• Graphics card length is limited to 230mm
• Case cooling fans are optional and not included
• Drive storage is limited to one 3.5-inch drive and one 2.5-inch drive

Good fit if

• You want a compact showcase chassis with curved glass and real wood trim.
• You plan to run a compact graphics card under 230mm.
• You need a mini-ITX case usable in vertical or horizontal orientation.

Skip if

• You own a graphics card exceeding 230mm in length.
• You require factory-included cooling fans out of the box.

Verdict: Jonsbo Curved Glass Mini-ITX Mini Tower suits builders who want a compact dual-chamber desk display for GPUs up to 230mm. Its curved glass and wood exterior provide hardware visibility within an 11.2-inch footprint.

6 Best radiator

Thermaltake TR100 Mini-ITX SFF Case

Best for: Mini-ITX builds using 280mm liquid radiators

Motherboard Support

mITX

Case Type

SFF

Radiator Support

280mm

Max GPU Length

360mm

Case Volume

18.9 Liters

Tower Size

Small Form Factor

View on Amazon: Thermaltake TR100 Mini-ITX SFF Case

The Thermaltake TR100 is an 18.9-liter dual-chamber Mini-ITX chassis built for liquid cooling. You get support for a 280mm radiator and full-sized graphics cards up to 360mm long via an included PCIe 4.0 riser cable. It fits SFX or SFX-L power supplies and allows 68mm CPU cooler clearance. This chassis suits you if you need large-radiator liquid cooling.

Pros

• Supports up to a 280mm radiator
• Accommodates GPUs up to 360mm with included PCIe 4.0 riser
• Compatible with SFX and SFX-L power supplies
• Removable PCIe bracket and integrated GPU brace

Cons

• Larger 18.9-liter footprint than compact sub-15-liter cases
• CPU air cooler height limited to 68mm

Good fit if

• You plan to install a 280mm liquid cooling radiator.
• You need room for a long graphics card up to 360mm.
• You use an SFX or SFX-L power supply.

Skip if

• You want an ultra-compact enclosure under 15 liters.
• You plan to use a tall CPU air cooler exceeding 68mm.

Verdict: Thermaltake TR100 SFF Mini-ITX Case fits builders who want 280mm radiator liquid cooling and long 360mm graphics cards in an 18.9-liter dual-chamber layout.

7 Also great

InWin Chopin MAX Mini-ITX Case

Best for: Ultra-compact APU builds needing bundled power

Motherboard Support

Mini ITX

Case Type

Mini-ITX

Dimensions

8.5 × 3.3 × 9.6 inches

Weight

4.85 pounds

View on Amazon: InWin Chopin MAX Mini-ITX Case

The InWin Chopin MAX is an ultra-compact Mini-ITX chassis featuring a 4mm aluminum exterior shell. It measures 3.3 inches wide, 9.6 inches high, and 8.5 inches long, keeping desk footprints minimal. The enclosure includes an integrated 200W 80 PLUS Gold power supply and limits CPU cooler height to 54mm. You get front USB 3.2 Gen 2x2 Type-C connectivity, making it suitable for compact APU setups.

Pros

• Constructed with a 4mm aluminum outer shell
• Includes integrated 200W 80 PLUS Gold power supply
• Front panel includes USB 3.2 Gen 2x2 Type-C connectivity
• Internal mounting holds up to two 2.5-inch drives

Cons

• CPU cooler clearance is restricted to 54mm
• Power output is capped at 200W
• No expansion slots provided for dedicated graphics cards

Good fit if

• You build an APU-based system without a dedicated graphics card.
• You require high-speed USB 3.2 Gen 2x2 Type-C on the front panel.

Skip if

• You plan to run components requiring more than 200W of power.
• You use a CPU heatsink taller than 54mm.

Verdict: InWin Chopin MAX Mini-ITX Case suits space-constrained APU builds needing integrated power and ultra-fast front USB. Its 54mm cooler limit and lack of discrete GPU slots define its specialized focus.

Specifications side by side

Frequently asked questions

See also

• best lian li aio liquid coolers
• best small fans