LG 27GL83A-B 27" UltraGear QHD IPS Monitor vs Dell S2721QS 27" 4K UHD IPS Monitor
Looking for a solid monitor? The LG 27GL83A-B 27" UltraGear QHD IPS Monitor is the premium option here, featuring a 144Hz refresh rate that crushes the Dell S2721QS 27" 4K UHD IPS Monitor's 60Hz. If you game a lot, that extra speed makes a huge difference for smoother action. But if clarity is your priority, the Dell's razor-sharp 4K resolution (3840 x 2160) delivers stunning detail that the LG's QHD (2560 x 1440) just can't match. In real-world use, this means text and images look significantly crisper on the Dell, especially for tasks like photo editing or watching 4K content. Key specs: Refresh: 144 Hz vs 60 Hz and Weight: 215.17 oz vs 225.75 oz.
Why compare these? Both the LG 27GL83A-B 27" UltraGear QHD IPS Monitor and Dell S2721QS 27" 4K UHD IPS Monitor are mid-range monitors competing in the same market segment. This makes them direct rivals for buyers looking for mid-range features and performance in 2026. Understanding their differences helps you choose the right one for your specific needs.
As an Amazon Associate I earn from qualifying purchases.
Key Differences at a Glance
| Aspect | LG 27GL83A-B | Dell S2721QS |
|---|---|---|
| User Rating | ✓4.5★ (13,197 reviews) | 4.4★ (1,905 reviews) |
| Top Strength | Ideal 27-inch QHD sweet spot delivers sharper text and details than 1080p | Razor-sharp 4K resolution (163 PPI) delivers excellent text clarity |
| Main Drawback | Contrast ratio is mediocre (IPS glow is visible in dark rooms; blacks appear gray) | Limited to 60Hz, making it less suitable for fast-paced gaming |
| Market Position | Mid-range | Mid-range |
LG 27GL83A-B 27" UltraGear QHD IPS Monitor
27" Viewable (27" Class)
2560 x 1440 (QHD)
16:9
IPS (In-Plane Switching)
Dell S2721QS 27" 4K UHD IPS Monitor
27" Viewable (27" Class)
3840 x 2160 (4K UHD)
16:9
IPS (In-Plane Switching)
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.
Expand
Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: LG 27GL83A-B 27" UltraGear QHD IPS Monitor vs Dell S2721QS 27" 4K UHD IPS Monitor
LG 27GL83A-B 27" UltraGear QHD IPS Monitor
Dell S2721QS 27" 4K UHD IPS Monitor
| Criterion | LG 27GL83A-B 27" UltraGear QHD IPS Monitor | Dell S2721QS 27" 4K UHD IPS Monitor |
|---|---|---|
| Rating | ★4.5(13,197)Amazon | ★4.4(1,905)Amazon |
Screen Size | 27" Viewable (27" Class) | 27" Viewable (27" Class) |
Resolution | 2560 x 1440 (QHD) | 3840 x 2160 (4K UHD) |
Aspect Ratio | 16:9 | 16:9 |
Screen Type | IPS (In-Plane Switching) | IPS (In-Plane Switching) |
Refresh Rate | 144 Hz | 60 Hz |
Response Time | 1 ms (GtG) | 4 ms (Gray-to-Gray Extreme Mode) |
Brightness | 350 nits (Typical) / 280 nits (Min) | 350 nits (Typical) |
Contrast | 1,000:1 (Typical) / 700:1 (Min) | 1,300:1 (Typical) |
Color Gamut | 99% sRGB | 99% sRGB |
Color Depth | 1.07 Billion (10-bit / 8-bit + FRC) | 1.07 Billion (10-bit via 8-bit + FRC) |
HDR | HDR10 (Software support only) | HDR Playback Support (Not VESA Certified) |
Adaptive Sync | NVIDIA G-SYNC Compatible / AMD FreeSync Premium | AMD FreeSync (40Hz - 60Hz) |
Viewing Angles | 178° (H) / 178° (V) | 178° (H) / 178° (V) |
Curvature | Flat | Flat |
Speakers | No (None) | 2x 3 W (Stereo) |
Ports | 1x DisplayPort 1.4; 2x HDMI 2.0; 1x 3.5mm Headphone Out | 2x HDMI 2.0; 1x DisplayPort 1.2; 1x 3.5mm Audio Line-out |
USB C | No | No |
Kvm | No | No |
Vesa | 100 x 100 mm | 100 x 100 mm |
Ergonomics | Height (110mm), Pivot (90°), Tilt (-5° to 15°); No Swivel | Height (110mm), Tilt (-5° to 21°), Swivel (-30° to 30°), Pivot (90°) |
Power Consumption | 51 W (Typical) / 65 W (Max) / 0.5 W (Sleep) | 28 W (Typical) / 52 W (Max) / 0.3 W (Standby) |
Weight With Stand | 6,100 g (13.5 lbs) | 6,400 g (14.11 lbs) |
| Pros |
|
|
| Cons |
|
|
As an Amazon Associate I earn from qualifying purchases. | Check Price on Amazon→ | Check Price on Amazon→ |
LG 27GL83A-B 27" UltraGear QHD IPS Monitor
27" Viewable (27" Class)
2560 x 1440 (QHD)
16:9
IPS (In-Plane Switching)
144 Hz
1 ms (GtG)
Pros
- Ideal 27-inch QHD sweet spot delivers sharper text and details than 1080p
- Fast 1ms IPS panel eliminates motion blur while maintaining vibrant 99% sRGB colors
Cons
- Contrast ratio is mediocre (IPS glow is visible in dark rooms; blacks appear gray)
- Lacks a USB hub and built-in speakers (features found on the pricier '850' model)
Dell S2721QS 27" 4K UHD IPS Monitor
27" Viewable (27" Class)
3840 x 2160 (4K UHD)
16:9
IPS (In-Plane Switching)
60 Hz
4 ms (Gray-to-Gray Extreme Mode)
Pros
- Razor-sharp 4K resolution (163 PPI) delivers excellent text clarity
- Fully adjustable ergonomic stand (Height, Pivot, Swivel, Tilt) included
Cons
- Limited to 60Hz, making it less suitable for fast-paced gaming
- Lacks USB-C connectivity and USB data hub
Which one is better?
The LG 27GL83A-B 27" UltraGear QHD IPS Monitor is the better buy for gamers - its 144Hz refresh rate crushes the Dell S2721QS 27" 4K UHD IPS Monitor's 60Hz. That said, grab the Dell if you need superior resolution for productivity tasks - its 4K display shines in that area.
Who should buy each?
Choose the LG 27GL83A-B 27" UltraGear QHD IPS Monitor if: you game often and want a smooth experience with 144Hz, appreciate vibrant colors with 99% sRGB coverage, or need a responsive display with a 1ms response time.
Choose the Dell S2721QS 27" 4K UHD IPS Monitor if: you work with high-resolution images, enjoy watching 4K movies, or prefer an ergonomic stand for comfort during long hours.
Quality Seekers
Higher user rating (4.5★ vs 4.4★) indicates better overall satisfaction
→ Choose LG 27GL83A-B
Safe Choice Buyers
More widely tested with 13,197 reviews vs 1,905
→ Choose LG 27GL83A-B
Ideal 27-inch QHD Priority
Ideal 27-inch QHD sweet spot delivers sharper text and details than 1080p
→ Choose LG 27GL83A-B
Razor-sharp 4K resolution Priority
Razor-sharp 4K resolution (163 PPI) delivers excellent text clarity
→ Choose Dell S2721QS
Conclusion
We hope this comparison helps you buy with confidence. Both products are dependable; the right one depends on how you will use it.
Bottom line: The LG 27GL83A-B 27" UltraGear QHD IPS Monitor edges ahead with a 4.5★ rating compared to 4.4★. However, Dell S2721QS 27" 4K UHD IPS Monitor remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: LG 27GL83A-B 27" UltraGear QHD IPS Monitor or Dell S2721QS 27" 4K UHD IPS Monitor?
LG 27GL83A-B 27" UltraGear QHD IPS Monitor is the better choice if you prioritize ideal 27-inch qhd sweet spot delivers sharper text and details than 1080p. Dell S2721QS 27" 4K UHD IPS Monitor wins if you value razor-sharp 4k resolution (163 ppi) delivers excellent text clarity. Both are rated highly (4.5★ vs 4.4★), so consider your specific needs and budget.
+What are the main differences between LG 27GL83A-B 27" UltraGear QHD IPS Monitor and Dell S2721QS 27" 4K UHD IPS Monitor?
Key differences: LG 27GL83A-B 27" UltraGear QHD IPS Monitor offers ideal 27-inch qhd sweet spot delivers sharper text and details than 1080p, while Dell S2721QS 27" 4K UHD IPS Monitor stands out with razor-sharp 4k resolution (163 ppi) delivers excellent text clarity. Consider that LG 27GL83A-B 27" UltraGear QHD IPS Monitor contrast ratio is mediocre (ips glow is visible in dark rooms; blacks appear gray). Meanwhile, Dell S2721QS 27" 4K UHD IPS Monitor limited to 60hz, making it less suitable for fast-paced gaming. Check the detailed specs table above for a complete comparison.
+Where can US buyers get the best price?
For US buyers, Amazon typically offers competitive pricing with Prime shipping, easy returns, and reliable warranty support. We recommend comparing prices on both products using our affiliate links above—prices fluctuate regularly, and you may find sales or deals.
+Is this comparison up to date?
Yes, this comparison is current for 2026. We regularly verify specs, ratings, and availability. Last verified: January 26, 2026. PageBen uses affiliate links for monetization, but our recommendations are research-driven and independent.
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.