GPU x Monitor Checker

ASUS ROG Swift OLED PG27AQDM

2560 x 1440Up to 240HzWOLEDDSC decoder: YES

Maximum verified mode per connector

This is where HDMI and DisplayPort usually differ. Both figures are at native resolution.

HDMI2560x1440 @ 120Hz (no DSC)
DisplayPort2560x1440 @ 240Hz (DSC required)

Inputs

ConnectorVersion labelCountDocumented input ceiling
HDMIHDMI 2.02~14.4 Gbps payload
DisplayPortDisplayPort 1.41~25.92 Gbps payload

Officially documented timing modes

ConnectorModeDSCSource grade
DisplayPort2560x1440 @ 120HzNOC
DisplayPort2560x1440 @ 240HzYESC
HDMI2560x1440 @ 100HzNOC
HDMI2560x1440 @ 120HzNOC

HDR, VRR, colour depth

HDRYES - HDR10; no VESA DisplayHDR certification claimed (1000 cd/m2 peak) (confirmed)
VRRYES - NVIDIA G-SYNC Compatible, AMD FreeSync Premium (HDMI 40-120Hz / DP 40-240Hz) (confirmed)
Max colour depth10-bit

Notes

Headline 240Hz is DisplayPort-only; HDMI 2.0 caps at 1440p/120Hz. The ASUS "PC Supported Primary Timing" table lists the modes but does not pin DSC per mode - the 240Hz DSC flag is a Grade C corroboration (TFTCentral). A launch-period NVIDIA G-SYNC driver-lag report exists (Grade F), likely resolved.

Last verified: 2026-09-02 (seed data).

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