ASUS TUF RTX 4090 OG in Lian Li O11 Vision Vertical Clearance Breakdown
The Lian Li O11 Vision features three-sided seamless tempered glass panels, making vertical GPU presentation a popular choice. However, installing a massive 3.6-slot graphics card like the ASUS TUF Gaming GeForce RTX 4090 OG OC using the official Lian Li Vertical GPU Kit requires evaluating bottom radiator spacing and expansion slot height alignment.
Dimensional Matrix & Structural Parameters
The table below summarizes physical clearance values for the ASUS TUF RTX 4090 OG OC inside the Lian Li O11 Vision using a vertical riser bracket:
| Dimension Parameter | Hardware Specification | Chassis Boundary | Net Clearance / State |
|---|---|---|---|
| GPU Total Length | 348.2 mm | 455.0 mm Max Chassis Length | +106.8 mm Front Glass Margin |
| GPU Card Width | 150.0 mm | Riser Offset Alignment | +42.0 mm Side Glass Margin |
| GPU Total Thickness | 72.6 mm (3.6-Slot) | Vertical Kit Slot Allowance | Occupies 4 Vertical Slots |
| Bottom Radiator Clearance | 60mm Stack (35mm rad + 25mm fan) | Upper Tray Bracket Setting | +48.0 mm Safe Air Gap |
Horizontal Clearance & Front Glass Margin
The Lian Li O11 Vision offers 455 mm of internal horizontal clearance. The ASUS TUF RTX 4090 OG OC measures 348.2 mm from its I/O bracket to the tip of its aluminum shroud. When mounted vertically, the card leaves a generous 106.8 mm margin to the front glass panel, leaving ample space for liquid cooling tubes or custom reservoirs.
Vertical Slot Positioning & Bottom Radiator Stack Gap
The Lian Li Vertical GPU Kit can be mounted in two motherboard tray height positions: Upper Mode and Lower Mode. When configuring 360mm liquid cooling radiators on the floor of the case, you must select Upper Mode.
In Upper Mode, the base of the vertical bracket rests above motherboard PCIe slot 2. A bottom 360mm radiator stack combining a 35 mm core with 25 mm fans consumes 60 mm of floor height. This leaves a safe 48 mm clearance gap between the bottom intake fan grilles and the lower edge of the 72.6 mm thick TUF GPU shroud. Cold intake air flows straight into the card’s axial fans without static pressure restriction.
Motherboard VRM Shield & Power Requirements
The backplate bracket of the Lian Li Vertical Kit extends across the lower motherboard tray. Verify that the bracket latch clears lower heatsink shrouds on high-end ATX boards like the ASUS ROG Crosshair X670E Hero motherboard.
Powering the TUF RTX 4090 OG OC demands robust electrical headroom. The card features a 450W target power limit with transient power spikes exceeding 600W. Pair this build with top-tier 1200W ATX 3.0 Titanium power supplies to guarantee transient spike protection and zero voltage sag during peak workloads.
Builder Summary
- Horizontal Clearance: PASSED — 106.8 mm front glass margin.
- Bottom Radiator Gap: PASSED — 48 mm clearance when vertical bracket is mounted in Upper Mode over a 60 mm bottom radiator stack.
- Power Cabling: Requires native 12V-2×6 / 12VHPWR 600W power cable routed cleanly through lower grommet ports.
- Cross-System Compatibility: For adjacent component clearances, review our analysis on Id AIO liquid cooler radiator spacing.