Dell S2721QS 27" 4K UHD IPS Monitor vs LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor
Want the best monitor for your workspace? The Dell S2721QS 27" 4K UHD IPS Monitor is the mid-range option that delivers stunning 4K resolution at 163 PPI, while the LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor stands out with its unique aspect ratio and USB-C connectivity. In real-world use, the Dell excels at text clarity and has a fully adjustable stand. However, the LG's vertical layout offers the equivalent workspace of two stacked monitors, making it a game-changer for multitaskers. The numbers tell the story: 3840 x 2160 pixels on the Dell vs 2560 x 2880 on the LG, which means sharper images for the Dell, but the LG provides a unique ergonomic advantage that you won't find elsewhere.
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Dell S2721QS 27" 4K UHD IPS Monitor
LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: Dell S2721QS 27" 4K UHD IPS Monitor vs LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor
Dell S2721QS 27" 4K UHD IPS Monitor
LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor
| Criterion | Dell S2721QS 27" 4K UHD IPS Monitor | LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor |
|---|---|---|
| Rating | ★4.9(24)Best Buy | ★4.7(36)Best Buy |
Screen Size | 27" Viewable (27" Class) | 27.6" Viewable (28" Class) |
Resolution | 3840 x 2160 (4K UHD) | 2560 x 2880 (SDQHD) |
Aspect Ratio | 16:9 | 16:18 |
Screen Type | IPS (In-Plane Switching) | Nano IPS |
Refresh Rate | 60 Hz | 60 Hz |
Response Time | 4 ms (Gray-to-Gray Extreme Mode) | 5 ms (GtG) |
Brightness | 350 nits (Typical) | 300 nits (Typical) |
Contrast | 1,300:1 (Typical) | 1,000:1 (Typical) |
Color Gamut | 99% sRGB | 98% DCI-P3 (CIE1976) |
Color Depth | 1.07 Billion (10-bit via 8-bit + FRC) | 1.07 Billion (10-bit) |
HDR | HDR Playback Support (Not VESA Certified) | HDR10 |
Adaptive Sync | AMD FreeSync (40Hz - 60Hz) | No (Not supported) |
Viewing Angles | 178° (H) / 178° (V) | 178° (H) / 178° (V) |
Curvature | Flat | Flat |
Speakers | 2x 3 W (Stereo) | 2x 7 W (Stereo with MaxxAudio) |
Ports | 2x HDMI 2.0; 1x DisplayPort 1.2; 1x 3.5mm Audio Line-out | 2x HDMI 2.0; 1x DisplayPort 1.4; 1x USB-C (90W PD, Data, Video); 2x USB-A 3.0 Downstream; 1x USB-B 2.0 Upstream; 1x 3.5mm Headphone Out |
USB C | No | Yes (90W Power Delivery + Video + Data) |
Kvm | No | Yes (Built-in Auto KVM & PBP) |
Vesa | 100 x 100 mm | 100 x 100 mm |
Ergonomics | Height (110mm), Tilt (-5° to 21°), Swivel (-30° to 30°), Pivot (90°) | Ergo Stand (C-Clamp/Grommet): Extend/Retract (210mm), Swivel (±335°), Pivot (90° CCW), Height (130mm), Tilt (±25°) |
Power Consumption | 28 W (Typical) / 52 W (Max) / 0.3 W (Standby) | 40 W (Typical) / 190 W (Max) / 0.5 W (Sleep) |
Weight With Stand | 6,400 g (14.11 lbs) | 9,000 g (19.8 lbs) |
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Dell S2721QS 27" 4K UHD IPS Monitor
✓ Pros:
- • Razor-sharp 4K resolution (163 PPI) delivers excellent text clarity
- • Fully adjustable ergonomic stand (Height, Pivot, Swivel, Tilt) included
- • High 1,300:1 contrast ratio is better than the standard 1,000:1 found on most IPS panels
- • Modern design with ultra-thin bezels on three sides and a textured silver back
- • Supports Picture-by-Picture (PBP) and Picture-in-Picture (PIP) for multitasking
✗ Cons:
- • Limited to 60Hz, making it less suitable for fast-paced gaming
- • Lacks USB-C connectivity and USB data hub
- • HDR support is software-based 'playback' only; lacks local dimming for true HDR
- • Response time overdrive (Extreme mode) can cause inverse ghosting artifacts
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LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor
✓ Pros:
- • Unique 16:18 aspect ratio provides the vertical workspace of two 21.5-inch monitors without the bezel gap
- • Nano IPS panel covers 98% DCI-P3, offering professional-grade color accuracy for creators
- • Included Ergo Stand allows for extreme flexibility and frees up desk space (C-Clamp mount)
- • USB-C connectivity delivers up to 90W charging, handling powerful MacBook Pros and Windows laptops
- • Built-in KVM and Picture-by-Picture (PBP) allow you to view and control two computers simultaneously
✗ Cons:
- • Strictly limited to 60Hz with no VRR, making it poor for gaming
- • Unconventional aspect ratio (2560x2880) may require scaling tweaks in macOS/Windows
- • Setup is heavy and requires a sturdy desk edge for the C-Clamp
- • Upstream USB-B port is limited to USB 2.0 speeds (though USB-C supports 3.0)
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Which one is better?
The Dell S2721QS 27" 4K UHD IPS Monitor is the better buy for most people - its razor-sharp 4K resolution crushes the LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor. That said, grab the LG if you need the vertical workspace and USB-C charging - it's a unique feature that stands out.
Who should buy each?
Choose the Dell S2721QS 27" 4K UHD IPS Monitor if: you need razor-sharp text clarity, want a fully adjustable ergonomic stand, or are focused on media consumption. (27" display, 225.75 oz weight)
Choose the LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor if: you work with multiple applications side-by-side, need USB-C power delivery, or prefer a unique vertical workspace for multitasking. (27.6" display, 317.47 oz weight)
Conclusion
We hope this comparison helps you buy with confidence. Both products are dependable; the right one depends on how you will use it.
Frequently Asked Questions
+Which has better value?
Dell S2721QS 27" 4K UHD IPS Monitor excels if you value razor-sharp 4k resolution (163 ppi) delivers excellent text clarity. LG DualUp 28MQ780-B 27.6" 16:18 Ergo Monitor is better if you prioritize unique 16:18 aspect ratio provides the vertical workspace of two 21.5-inch monitors without the bezel gap. 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.
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