Asus ROG Strix XG27ACMES - 27" - 255Hz Gaming Monitor

255Hz Precision for a Competitive Edge

The ROG Strix XG27ACMES delivers ultra-smooth performance and sharp visual clarity for competitive and immersive gaming alike. A 27-inch Fast IPS panel runs WQHD (2560 x 1440) resolution with an overclocked refresh rate of up to 255Hz and a 0.3ms (min.) response time, so fast-moving scenes stay precise with motion blur and input lag kept to a minimum.

Fluid, tear-free gameplay is supported through NVIDIA G-SYNC Compatible and Adaptive-Sync, combined with ELMB Sync to maintain clarity even at high frame rates. VESA Certified DisplayHDR 400 support adds improved contrast and brightness, while a factory-calibrated wide color gamut (97% DCI-P3, 133% sRGB) keeps visuals vibrant and consistent for both gaming and creative work.

ROG's Gaming A.I. features — Dynamic Crosshair and Dynamic Shadow Boost — sharpen targeting accuracy and shadow visibility on the fly. Connectivity includes USB-C with DisplayPort Alt Mode and 15W power delivery, DisplayPort 1.4, and HDMI 2.1, all housed in a compact, ergonomic design with full tilt, swivel, pivot, and height adjustment plus VESA wall-mount compatibility.

Key Features

• 255Hz (OC) Refresh Rate & 0.3ms Response Time: Smooth, responsive motion for fast-paced competitive games.
• Fast IPS Panel with WQHD Resolution: Sharp detail with wide 178° viewing angles and accurate color.
• ELMB Sync + Variable Refresh Rate: Motion blur reduction working alongside Adaptive-Sync to cut tearing and stutter.
• G-SYNC Compatible & FreeSync Premium: Synchronized, tear-free visuals across supported GPUs.
• DisplayHDR 400 with Wide Color Gamut: Factory-checked 97% DCI-P3 and 133% sRGB coverage.
• ROG Gaming A.I.: Dynamic Crosshair and Dynamic Shadow Boost for a competitive visibility edge.
• USB Type-C Connectivity: DP Alt Mode with 15W power delivery alongside DisplayPort 1.4 and HDMI 2.1.
• Compact, Ergonomic Design: Tilt, swivel, pivot, and height adjustment with VESA mounting and tripod socket.

Specifications

• Panel size: 27" Fast IPS, 16:9
• Resolution: 2560 x 1440 (WQHD)
• Refresh rate: up to 255Hz
• Response time: 1ms (GTG), 0.3ms (min.)
• Brightness: 350 cd/m² typical, 400 cd/m² peak (HDR)
• Contrast ratio: 1300:1 typical
• Viewing angle: 178°/178°
• HDR: HDR10, VESA DisplayHDR 400
• Color gamut: 97% DCI-P3, 133% sRGB, 10-bit (1073.7M colors)
• Ports: 1x DisplayPort 1.4 (HBR3), 1x HDMI 2.1 (FRL), 1x USB-C (DP Alt Mode, 15W PD), earphone jack
• Certifications: TÜV Flicker-Free, TÜV Low Blue Light, VESA DisplayHDR 400, AMD FreeSync Premium, G-SYNC Compatible
• Power consumption: <23W
• VESA mount: 100 x 100mm; Net weight: 5.96 kg