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Compare ASUS Strix XG279Q vs ROG Strix XG309CM vs ASUS ROG Strix XG349C

Connectivity

Ports
2x HDMI 2.0, 1x DisplayPort 1.2, 1x 3.5 mm Audio Out, 2x USB 3.0 (downstream), 1x USB 3.0 (upstream)
1x HDMI 2.0, 1x DisplayPort 1.2, 1x 3.5 mm Audio Out, 2x USB 3.0 (Type-A; downstream), 1x USB 3.0 (Type-C; upstream; 15W)
1x USB-C + 2x USB 3.0 + 1x DisplayPort 1.4 + 1x HDMI 2.0 + 1x Headphone

Construction

Adjustment | Height
120 mm / 4.7244 in
110 mm / 4.3307 in
Adjustment | Pivot
-0° ~ 90°
N/A
Adjustment | Swivel
-40° ~ 40°
-25° ~ 25°
-25° ~ 25°
Adjustment | Tilt
-5° ~ 20°
-5° ~ 20°
-5° ~ 20°
Camera
No
No
Colors
Black
Black
Form Factor
Ultra-wide, curved monitor
Speakers
2x 2W
2x 2W
2x 2W
VESA Mount
100 x 100 mm
100 x 100 mm
100 x 100 mm

Dimensions

Bezels
89.33% screen-to-body ratio
88.66% screen-to-body ratio
Size | Depth
3.23 in / 82 mm w/o stand, 10.63 in / 270 mm w/ stand
2.91 in / 73.82 mm w/o stand, 10.43 in / 264.93 mm w/ stand
142 mm w/o stand
Size | Height
14.45 in / 367 mm w/o stand, 16.22 in / 412 mm w/ stand
12.63 in / 320.68 mm w/o stand, 19.14 in / 486.14 mm w/ stand
366 mm w/o stand
Size | Width
24.06 in / 611 mm
27.85 in / 707.33 mm
815 mm
Weight
4 kg / 9 lbs w/o stand , 7 kg / 15 lbs w/ stand
4.56 kg / 10 lbs w/o stand , 7.5 kg / 17 lbs w/ stand
5.6 kg w/o stand

Display

Aspect Ratio
16:9
21:9
21:9
Brightness
400 nits
300 nits
400 nits
Contrast Ratio
1000:1 (static)
1000:1 (static), 100000000:1 (dynamic)
1000:1
Display Backlight
W-LED
W-LED
Display Color Depth
8 bits, 16777216 colors
8 bits, 16777216 colors
10 bit (1.07B colors)
Display Curvature
1900R
Display Diagonal
27" (26.96 in / 684.7 mm)
30" (29.5 in / 749.358 mm)
34.14 inch
Display Type
IPS, Anti-glare/Matte
IPS, Anti-glare/Matte
IPS
Gamut
95% DCI-P3, 125% sRGB
110% sRGB
98% DCI-P3
Pixel Density
109 ppi
94 ppi
109 ppi
Pixel Pitch
0.233 mm
0.27 mm
0.2325 mm
Refresh Rate
23 Hz ~ 170 Hz
40 Hz ~ 220 Hz
180 Hz
Resolution
QHD (2560x1440)
UW-FHD (2560x1080)
Ultra-Wide QHD (3440x1440)
Response Time
1 ms (min)
1 ms GTG
Viewing Angle
178° H / 178° V
178° H / 178° V
178° / 178°

Function

HDR
DisplayHDR 400
HDR10
HDR10, DisplayHDR 400
Licenses
BSMI, cCSAus, FCC, CE, CCC, EPA, China RoHS, Win7
BSMI, CB, CCC, CE, CEL level 1, cTick, CU, eStandby, ENERGY STAR, FCC Class B, J-MOSS, KCC, PSE, RCM, RoHS, TÜV Flicker-free, TÜV Low Blue Light, UL/cUL, VCCI, WEEE, WHQL (Windows 10; Windows 8.1; Windows 7)
Operating Temperature
0 °C ~ 40 °C , 32 °F ~ 104 °F
RGB Lighting
Yes, Aura Sync
Variable Framerate
NVIDIA G-SYNC
NVIDIA G-SYNC, AMD FreeSync Premium
G-Sync
Video
Asus FastIPS, Aura Sync, Low Blue Light, Flicker-free technology, GameFast Input technology, HDCP (High-bandwidth Digital Content Protection), ELMB (Extreme Low Motion Blur), 5-way OSD joystick, Shadow Boost, GamePlus, Adaptive-Sync Technology, GameVisual
ASUS DisplayWidget, Ultra-Low Blue Light, ASUS Smart Contrast Ratio (ASCR), KVM Switch, Color Accuracy - △EELMB Sync (Extreme Low Motion Blur Sync), Flicker-free technology, Trace Free Technology, Fast IPS technology, Aura Sync Lighting Effect, Adaptiv...

Performance

Power Consumption
20 W (average) / 90 W (max) / 0.5 W (sleep) / 0.5 W (off)
28 W (average) / 0.5 W (sleep) / 0.3 W (off)
40 W max
Power Supply
18 W Power Delivery via USB-C

Production

Accessory
DisplayPort cable - optional, HDMI cable - optional, USB cable
DisplayPort cable, HDMI cable, USB 3.0 cable, USB Type-C cable
Debut
2019
2021
2021

Reviews

Neofiliac score
87%
70%
Pros
  • DisplayHDR 400
  • Rich color reproduction
  • Stand with tilt, swivel, pivot, and height adjustments
  • Fast 1 ms response time
  • High 1000:1 contrast ratio
  • Support for NVIDIA G-SYNC
  • Build-in speakers included
  • 220Hz max refresh rate
  • Ultra-wide form factor
  • Stand with tilt, swivel, and height adjustments
  • High 1000:1 contrast ratio
  • Support for NVIDIA G-SYNC
  • Build-in speakers included
Cons
  • 8-bit display panel
  • 8-bit display panel

Price

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