NZXT H2 Flow (2026) / Lian Li O11 Dynamic EVO XL (black)

NZXT H2 Flow (2026): CI-H21FB-01 · black; Mini-ITX case

Lian Li O11 Dynamic EVO XL (black): O11DEXL-X black full-tower case (LDLC code G99.O11DEXL-X.00). The white O11DEXL-W, the standard O11 Dynamic EVO and the EVO RGB are separate models.

SpecificationNZXT H2 Flow (2026)Lian Li O11 Dynamic EVO XL (black)
Release year20262023
Model year2026 NZXT—
Dimensions and volume435 × 181 × 263 mm (height × width × depth); 20.7 L NZXT—
Weight4.55 kg; empty case NZXT—
ConstructionSteel; hybrid tempered-glass and mesh side panel NZXT—
MotherboardMini-ITX; no back-connect motherboard support NZXT—
Power supplySFX / SFX-L; up to 130 mm long

Not designed for an ATX power supply.

NZXT		ATX, up to 220 mm long; single PSU Lian Li
Graphics card clearanceUp to 331 mm long, 65 mm thick and 150 mm wide NZXT—
Combined GPU and radiator fitFront AIO tube covers, fittings and cables can reduce available GPU width

Being shorter than 331 mm does not alone guarantee compatibility.

NZXT		—
CPU air cooler75 mm maximum height

NZXT's product guidance also calls for at least 10 mm between the cooler and glass.

NZXT		—
Front radiatorUp to 280 mm; combined radiator and fan thickness up to 60 mm NZXT—
Fan mountsFront: 2 × 120 or 2 × 140 mm; top: 2 × 120 mm NZXT—
Included fansTop: 2 × 120 mm F120Q Case Version exhaust fans; 3-pin DC

Not PWM fans or a guarantee of whole-system silence.

NZXT		—
Front connections2 × USB 3.2 Type-A; 1 × USB-C 3.2 Gen 2×2; headset jack NZXT—
Drive bays2 × 2.5-inch, up to 8.5 mm thick; no 3.5-inch bays NZXT3 × 2.5-inch SSD behind the motherboard tray; 4 × 3.5-inch HDD or 2.5-inch SSD in the drive cage Lian Li
Expansion and riser3 vertical slots; included 260 mm PCIe 5.0 ×16 riser

Three slots of width do not mean three separate PCIe connections.

NZXT		—
Type and size—Full tower; 522 × 304 × 531.9 mm (D × W × H)

It takes a lot of desk space and is clearly larger than the standard O11 Dynamic EVO.

Lian Li
Materials—4.0 mm steel, tempered glass, aluminium Lian Li
Motherboard support—E-ATX (up to 280 mm wide), ATX, Micro-ATX, Mini-ITX; 8 expansion slots Lian Li
Graphics card—Up to 460 mm long; optional VG4-5-V4X/W vertical bracket (PCIe 5.0 riser) or O11DEXL-1X/W upright bracket

Horizontally mounted cards up to 460 mm fit. The upright bracket places the card next to the motherboard; then the card must be at most 358 mm long, 150 mm wide and 80 mm thick (75 mm with a 420 mm radiator top or bottom). Older VG4-4X/W brackets are not compatible.

Lian Li
CPU cooler—Up to 167 mm tall

Most large dual-tower air coolers fit; check the maker’s height for taller models.

Lian Li
Radiator support—Top, side and bottom: 240, 280, 360 or 420 mm; up to three 420 mm at once

It is designed for custom water loops; three large radiators can be fitted at once.

Lian Li
Fan support—Top, side and bottom: 3 × 120 mm or 3 × 140 mm; rear 2 × 120 mm; 11 fans in total

Lian Li’s spec page lists no included fans, so fans may need to be bought separately.

Lian Li
Front I/O—4 × USB 3.0, 1 × USB Type-C, audio, power and reset buttons, LED colour and mode buttons

Lian Li does not state the USB-C speed; it depends on the motherboard’s front USB-C header.

Lian Li
Layout and lighting—Normal and Reverse layouts; front ARGB strip with motherboard sync

Reverse mode mirrors the interior for people placing the case on the right side of the desk, so the glass faces the user.

Lian Li
Colours and warranty—O11DEXL-X black, O11DEXL-W white; 1-year warranty Lian Li