GPU upgrades — flagship clearance

RTX 4090 / 4080 Super class cards need full-tower or large mid-tower with documented 360 mm+ GPU support.

Length: Reference 4090 boards are ~336–360 mm. Measure from PCIe bracket to any front radiator or drive cage.

Power: 450 W TDP class — use native 12VHPWR from quality PSU (850 W+). Avoid daisy-chained 8-pin adapters on marginal PSUs.

Airflow: Open-air cards need strong intake. Mesh front panels outperform solid glass for sustained boost clocks.

• RTX 4090 — Verify case max GPU length ≥ 360 mm
• RTX 4080 Super — Slightly shorter — still check thickness

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