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AOC CU34G4Z 34" Curved Ultrawide Gaming Monitor vs KOORUI 27 Inch QHD — Head-to-Head (2026)

The specs side by side, with links to both product pages.

AOC CU34G4Z 34" Curved Ultrawide Gaming Monitor, UWQHD 3440 x1440 1500R 21:9, 240Hz 0.3ms MPRT, HDR 400, Display Port, HDMI, USB 3.2, AMD FreeSync Premium, Height Adjustable, 3-Year Zero-Bright-dot

AOC CU34G4Z 34" Curved Ultrawide Gaming Monitor, UWQHD 3440 x1440 1500R 21:9, 240Hz 0.3ms MPRT, HDR 400, Display Port, HDMI, USB 3.2, AMD FreeSync Premium, Height Adjustable, 3-Year Zero-Bright-dot

Check price on Amazon
🛒 Check Price on Amazon
vs
KOORUI 27 Inch QHD (2560x1440) IPS HDR Ultra-Thin Computer Gaming Monitor, 120Hz Refresh Rate, DCI-P3 95%, FreeSync & G-Sync, 1ms MPRT, VESA 100x100mm, Tilt Adjustable for Game and Work, E2721H

KOORUI 27 Inch QHD (2560x1440) IPS HDR Ultra-Thin Computer Gaming Monitor, 120Hz Refresh Rate, DCI-P3 95%, FreeSync & G-Sync, 1ms MPRT, VESA 100x100mm, Tilt Adjustable for Game and Work, E2721H

$189.99
🛒 Buy on Amazon — $189.99

*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.

Spec-by-spec

SpecAOC CU34G4Z 34" Curved Ultrawide…KOORUI 27 Inch QHD (2560x1440) IPS HDR…
BrandAOCKOORUI
ColorBlackBlack
ShapeCurvedFlat
Brightness450300 Nit
Model NameCU34G4ZE2721H
ResolutionQHD Ultra Wide 1440pQHD Wide 1440p
Screen Size34 Inches27
Aspect Ratio21:916:9
ConnectivityUSBUSB-C
Display TypeLEDLED
Model NumberCU34G4ZE2721F
Refresh Rate240 Hz120 hertz
Adaptive SyncFreeSync PremiumFreeSync, G-Sync
Response Time0.3 Milliseconds1 milliseconds

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