← Back to Monitors
2026 comparison
Updated Jan 16, 2026
|Sources: Amazon, Manufacturer

KOORUI 24E3 165Hz Gaming Monitor vs Acer SB220Q bi 21.5" FHD IPS Monitor

If you are torn between KOORUI 24E3 165Hz Gaming Monitor and Acer SB220Q bi 21.5" FHD IPS Monitor, this breakdown is for you. We compare specs, pros, and cons so you can decide confidently.

Ratings: 4.3★ vs 4.6★

As an Amazon Associate I earn from qualifying purchases.

KOORUI 24E3 165Hz Gaming Monitor

KOORUI 24E3 165Hz Gaming Monitor

4.3
(3,500)Amazon
Screen Size:23.8" Viewable (24" Class)
Resolution:1920 x 1080 (FHD)
Aspect Ratio:16:9
Screen Type:IPS (Fast IPS)
Check Amazon Price
Acer SB220Q bi 21.5" FHD IPS Monitor
Screen Size:21.5" Viewable
Resolution:1920 x 1080 (FHD)
Aspect Ratio:16:9
Screen Type:IPS (In-Plane Switching)
Check Amazon Price

Comparison: KOORUI 24E3 165Hz Gaming Monitor vs Acer SB220Q bi 21.5" FHD IPS Monitor

KOORUI 24E3 165Hz Gaming Monitor

KOORUI 24E3 165Hz Gaming Monitor

4.3(3,500)Amazon
Acer SB220Q bi 21.5" FHD IPS Monitor

Acer SB220Q bi 21.5" FHD IPS Monitor

4.6(43,282)Amazon
KOORUI 24E3 165Hz Gaming Monitor

KOORUI 24E3 165Hz Gaming Monitor

Rating:4.3(3,500)Amazon
Screen Size:23.8" Viewable (24" Class)
Resolution:1920 x 1080 (FHD)
Aspect Ratio:16:9
Screen Type:IPS (Fast IPS)
Refresh Rate:165 Hz (via DisplayPort) / 144 Hz (via HDMI)
Response Time:1 ms (GtG)
Brightness:250 nits (Typical)
Contrast:1,000:1 (Static) / 20,000,000:1 (Dynamic)
Color Gamut:99% sRGB / 72% NTSC
Color Depth:16.7M (8-bit)
HDR:No (Not supported)
Adaptive Sync:AMD FreeSync (G-Sync Compatible)
Viewing Angles:178° (H) / 178° (V)
Curvature:Flat
Speakers:No (None)
Ports:2x HDMI 1.4; 1x DisplayPort 1.2; 1x 3.5mm Audio Out
USB C:No
Kvm:No
Vesa:75 x 75 mm
Ergonomics:Tilt only (-5° to 20°)
Power Consumption:30 W (Max) / 0.5 W (Standby)
Weight With Stand:3,060 g (6.75 lbs)

✓ Pros:

  • True Fast IPS panel delivers 1ms response times with vibrant 99% sRGB colors
  • High 165Hz refresh rate (via DisplayPort) for competitive esports gaming
  • Supports AMD FreeSync Premium to eliminate screen tearing
  • Includes both DisplayPort and two HDMI ports for connecting multiple devices
  • VESA 75x75mm mountable, allowing for aftermarket arm upgrades

✗ Cons:

  • Stand ergonomics are poor (Tilt only; no height adjustment)
  • HDMI ports are limited to 144Hz (must use DisplayPort for full 165Hz)
  • No built-in speakers
  • Controls are basic and the OSD menu can be clunky to navigate

As an Amazon Associate I earn from qualifying purchases.

Check Price on Amazon
Acer SB220Q bi 21.5" FHD IPS Monitor

Acer SB220Q bi 21.5" FHD IPS Monitor

Rating:4.6(43,282)Amazon
Screen Size:21.5" Viewable
Resolution:1920 x 1080 (FHD)
Aspect Ratio:16:9
Screen Type:IPS (In-Plane Switching)
Refresh Rate:75 Hz (via HDMI) / 60 Hz (via VGA)
Response Time:4 ms (GtG)
Brightness:250 nits (cd/m²)
Contrast:1,000:1 (Static) / 100,000,000:1 (Dynamic)
Color Gamut:72% NTSC (Approx. 99% sRGB)
Color Depth:16.7M (6-bit + FRC)
HDR:No (Not supported)
Adaptive Sync:AMD Radeon FreeSync (48-75Hz range via HDMI)
Viewing Angles:178° (H) / 178° (V)
Curvature:Flat
Speakers:No (None)
Ports:1x HDMI 1.4; 1x VGA
USB C:No
Kvm:No
Vesa:No (Not VESA compatible)
Ergonomics:Tilt only (-5° to 15°)
Power Consumption:24 W (Typical) / 0.45 W (Standby)
Weight With Stand:2,480 g (5.47 lbs)

✓ Pros:

  • Ultra-thin 'Zero Frame' design looks modern and saves desk space
  • IPS panel ensures consistent colors and wide viewing angles (178°)
  • 75Hz refresh rate with FreeSync provides smoother gaming than standard 60Hz panels
  • Excellent value for a secondary display or compact primary monitor
  • Lightweight (under 5.5 lbs) makes it easy to move or reposition

✗ Cons:

  • Lacks VESA mount compatibility (cannot be mounted on arms or walls)
  • No built-in audio or headphone jack
  • Stand is basic with no height, swivel, or pivot adjustments
  • Limited connectivity (only 1x HDMI and 1x VGA; no DisplayPort)

As an Amazon Associate I earn from qualifying purchases.

Check Price on Amazon

Which one is better?

Overall, Acer SB220Q bi 21.5" FHD IPS Monitor delivers better satisfaction. KOORUI 24E3 165Hz Gaming Monitor is still a quality option with specific strengths worth considering.

Who should buy each?

Choose KOORUI 24E3 165Hz Gaming Monitor if:
- You want True Fast IPS panel delivers 1ms response times with vibrant 99% sRGB colors, High 165Hz refresh rate (via DisplayPort) for competitive esports gaming
- Rating: 4.3★ (3500 reviews)

Choose Acer SB220Q bi 21.5" FHD IPS Monitor if:
- You prefer Ultra-thin 'Zero Frame' design looks modern and saves desk space, IPS panel ensures consistent colors and wide viewing angles (178°)
- Rating: 4.6★ (43282 reviews)

Conclusion

There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.

Frequently Asked Questions

+Which has better value?

KOORUI 24E3 165Hz Gaming Monitor excels if you value true fast ips panel delivers 1ms response times with vibrant 99% srgb colors. Acer SB220Q bi 21.5" FHD IPS Monitor is better if you prioritize ultra-thin 'zero frame' design looks modern and saves desk space. Pick based on your budget and daily use.

+Is this an independent review?

Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.

+Do newer models exist?

Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.

Affiliate disclosure

PageBen uses Amazon affiliate links. If you purchase through our links, we may earn a commission at no extra cost to you. This supports independent content for US shoppers.