Acer Predator Gaming Monitor vs KOORUI 27 Inch QHD — Head-to-Head (2026)

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

Acer Predator Gaming Monitor | 27" UHD 3840 x 2160 IPS | AMD FreeSync Premium | Up to 320Hz with DFR | Up to 0.5ms | VESA DisplayHDR400| DCI-P3 90% | Display Port 1.4 & 2 x HDMI 2.1 | XB273K V5bmiiprx

$299.99

$189.99

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

Spec	Acer Predator Gaming Monitor \| 27" UHD…	KOORUI 27 Inch QHD (2560x1440) IPS HDR…
Brand	Acer	KOORUI
Color	Black	Black
Brightness	400 nits	300 Nit
Model Name	Predator	E2721H
Resolution	4K UHD 2160p	QHD Wide 1440p
Screen Size	27 inches	27
Aspect Ratio	16:9	16:9
Display Type	LCD	LED
Model Number	XB273K V5bmiiprx	E2721F
Refresh Rate	320 hertz	120 hertz
Adaptive Sync	FreeSync Premium	FreeSync, G-Sync
Response Time	0.5 milliseconds	1 milliseconds
Screen Finish	Matte	Matte
Contrast Ratio	400:1	1000:1

Already narrowing? Open each product page for the full spec sheet, FAQ, and a link to the current Amazon price: Acer Predator Gaming Monitor | 27" UHD… · KOORUI 27 Inch QHD (2560x1440) IPS HDR…. Browse the full Gaming Monitors catalog or read our Gaming Monitors buying guide for tier picks. You can also compare up to four products side-by-side, jump to all categories, or check the benchmarks index for hardware-only matchups.