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Compare ViewSonic VA3456-MHDJ vs ASUS ROG Strix OLED XG27UCDMG

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  3. ViewSonic VA3456-MHDJ 🆚 ASUS ROG Strix OLED XG27UCDMG
ViewSonic VA3456-MHDJ and ASUS ROG Strix OLED XG27UCDMG are both monitors with the same Viewing Angle (178° H x 178° V), DisplayPort (1) and HDMI (2). The main differences are in Screen Size, Resolution, Pixel Density and Dot Pitch.
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ViewSonic VA3456-MHDJ 34" 21:9 UltraWide WQHD 1440p Frameless IPS HDMI DisplayPort
ViewSonic VA3456-MHDJ
ASUS ROG Strix OLED XG27UCDMG 27" 4K QD-OLED 240Hz 0.03ms Anti-Flicker 2.0 Custom Heatsink 99% DCI-P3 True 10-bit Color 90LM0B20-B01971
ASUS ROG Strix OLED XG27UCDMG
Prices
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Out of Stock
Free shipping
$319.99
Out of Stock
Free shipping
$319.99
Out of Stock
+ $6.99 Shipping
$319.99
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Prices
(Change region)
In Stock
$799.00
Last updated 20 minutes ago.
In Stock
Free shipping
$799.00
In Stock
$849.99
Show 2 more offers
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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand
ViewSonic
Brand
ASUS
Model
VA3456-MHDJ
Model
  • 90LM0B20-B01971
  • XG27UCDMG
  • ROG Strix OLED XG27UCDMG
  • 90LM0B20-B019B1
Release Date
-
Release Date
📅 August 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
View Details ►
Price history
View Details ►
Screen Size
34"
Screen Size
26.5"
Resolution
3440 x 1440
Resolution
3840 x 2160
Pixel Density
109.68 PPI
Pixel Density
166.26 PPI
Dot Pitch
0.23 mm
Dot Pitch
0.15 mm
Panel Type
IPS
Panel Type
QD-OLED
Widescreen
No
Widescreen
Yes
Aspect Ratio
21:9
Aspect Ratio
16:9
Curved Screen
No
Curved Screen
No
Viewing Angle
178° H x 178° V
Viewing Angle
178° H x 178° V
Brightness
420 cd/m²
Brightness
1000 cd/m²
Contrast Ratio
1000:1 Static Contrast Ratio
Contrast Ratio
-
Response Time
4 ms
Response Time
0.03 ms
Refresh Rate
60 Hz
Refresh Rate
240 Hz
Built-in Speakers
Yes
Built-in Speakers
No
DVI
0
DVI
0
DisplayPort
1
DisplayPort
1
HDMI
2
HDMI
2
VGA
0
VGA
0
G-SYNC Support
No
G-SYNC Support
Yes
FreeSync Support
No
FreeSync Support
Yes
-

Comparison and key differences summary

Reasons to buy the ViewSonic VA3456-MHDJ:

  • 60% cheaper, you can save $479.01
  • Bigger screen size (+7.50")
  • Built-in speakers

Buy now

Reasons to buy the ASUS ROG Strix OLED XG27UCDMG:

  • Higher Screen Resolution (3840 x 2160 pixel)
  • Better pixel density (166.26 PPI)
  • More brightness (+580 cd/m²)
  • Less response time (-3.97 ms)
  • Higher refresh rate (240 Hz)
  • Supports NVIDIA G-Sync
  • Supports AMD FreeSync

Buy now

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