Verdict
Head-to-head · Best Mini-ITX Cases

Cooler Master NR200 vs Lian Li A4-H2O

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Cooler Master NR200 comes out ahead by a narrow margin (4.5 vs 4.4). The gap is mostly about first-time SFF builders, and anyone who wants the most-recommended Mini-ITX case without paying the boutique tax — read the strengths below before deciding.

Cooler Master NR200
Higher ratedRanked #2 in Best Mini-ITX Cases
Cooler Master NR200
$86as of May 19

The Cooler Master NR200 is the default Mini-ITX case recommendation in 2026 — and has been for several years — because it pairs sane thermals, generous GPU clearance, and tool-free access at a price that undercuts almost every competitor by 2-3x. Its 18.25 L footprint is the sweet spot for SFF builds: small enough to feel intentional, large enough that you're not fighting the case during install. The downside is the no-frills front I/O and SFX-only PSU mount, but neither is unusual at this price.

Strengths
  • Best price-to-build-quality ratio in the entire Mini-ITX category
  • 18.25 L footprint fits 330 mm triple-slot GPUs and 280 mm radiators
  • Five ventilated steel panels — every face is removable for tool-free access
Watch-outs
  • SFX power supply only, no ATX support
  • Original NR200 ships without a tempered glass panel — the NR200P upgrades that
  • Front I/O is utilitarian — no Type-C 20 Gbps like the Terra
Lian Li A4-H2O
Ranked #3 in Best Mini-ITX Cases
Lian Li A4-H2O
$156as of May 19

The A4-H2O is what you build when you've decided 11 liters is the goal and you're willing to accept the trade-offs to get there. The sandwich layout mounts the GPU behind the motherboard, the removable front and top open up surprisingly easily for a case this small, and the 240 mm AIO support is the differentiating feature against most cases in this volume class. Cable management is the dealbreaker for some builders — there's almost nothing in the way of dedicated routing. GamersNexus calls cable management the case's main flaw; everything else is praised.

Strengths
  • 11 L volume — among the smallest cases that still fit triple-slot GPUs
  • Designed around 240 mm AIO water cooling, with removable top bracket for radiator install
  • Mesh on all four user-facing panels keeps thermals manageable despite the tight volume
Watch-outs
  • Cable management is the most-cited frustration — no dedicated tie-downs or channels
  • Limited drive support (no 3.5" bays) by design — NVMe-only builds are expected
  • SFX power supply only, and clearance for SFX-L is tight

How they stack up

Cooler Master NR200

The NR200 is the value pick that everyone benchmarks against. The Fractal Design Terra wins on materials and finish but costs 2.5x more; the Lian Li A4-H2O is roughly half the volume but loses out on cable management space. The Hyte Revolt 3 trades the NR200's cubic layout for a vertical tower with carry handle. The Jonsbo C6-ITX is even cheaper but compromises on triple-slot GPU clearance.

Lian Li A4-H2O

The A4-H2O is the smallest case in this round-up at 11 L vs the Cooler Master NR200's 18.25 L and Hyte Revolt 3's 18.4 L. Vs the Fractal Design Terra (10.4 L), the A4-H2O trades the Terra's wood-and-aluminum finish for a stronger mesh airflow story and proper 240 mm AIO support. Not the build for first-timers — the Jonsbo C6-ITX and Cooler Master NR200 are both significantly easier to work in.

Specs side-by-side

SpecCooler Master NR200Lian Li A4-H2O
Volume18.25 L11 L
MotherboardMini-ITXMini-ITX
PSUSFX onlySFX, SFX-L (tight)
Max GPU Length330 mm (triple-slot)322 mm (triple-slot)
Max CPU Cooler Height155 mm55 mm
Radiator SupportUp to 280 mm240 mm AIO (top)
Fan CapacityUp to 7 fans (120 mm)
MaterialSteel, plastic, mesh frontAluminum exterior, SPCC steel interior
Front I/O2x USB 3.2 Gen 1 Type-A, 3.5 mm headsetUSB-C 3.1, USB-A 3.0, audio
Weight4.8 kg
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