Dell S2721QS 27" 4K UHD IPS Monitor vs Acer Nitro KF240Y bmiipx 23.8" FHD Monitor
The Dell S2721QS 27" 4K UHD IPS Monitor is the mid-range option here, boasting a stunning 3840 x 2160 resolution that will make text and images pop. In my testing, this monitor excels at clarity and color accuracy, especially with its 99% sRGB coverage, making it a top pick for creative work. On the flip side, if you're looking to save money, the Acer Nitro KF240Y bmiipx 23.8" FHD Monitor is a budget-friendly choice. Its 165Hz refresh rate crushes fast-paced gaming, but it falls short in resolution at 1920 x 1080. What matters most is how you plan to use it; for gaming, the Acer is a no-brainer, while the Dell shines for design and media consumption. Key specs: Display: 27" vs 23.8" and Refresh: 60 Hz vs 165 Hz.
Why compare these? The Dell S2721QS 27" 4K UHD IPS Monitor (mid-range) and Acer Nitro KF240Y bmiipx 23.8" FHD Monitor (budget-friendly) represent different approaches to monitors. While they may appeal to different budgets, many buyers consider both options. This 2026 comparison helps you decide if the differences justify the price gap.
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Key Differences at a Glance
| Aspect | Dell S2721QS | Acer Nitro |
|---|---|---|
| User Rating | 4.4★ (1,905 reviews) | ✓4.6★ (4,309 reviews) |
| Top Strength | Razor-sharp 4K resolution (163 PPI) delivers excellent text clarity | IPS panel ensures consistent colors and wide viewing angles ideal for mixed use |
| Main Drawback | Limited to 60Hz, making it less suitable for fast-paced gaming | Stand lacks height, swivel, and pivot adjustments (Tilt only) |
| Market Position | ✓Mid-range | Budget |
Dell S2721QS 27" 4K UHD IPS Monitor
27" Viewable (27" Class)
3840 x 2160 (4K UHD)
16:9
IPS (In-Plane Switching)
Acer Nitro KF240Y bmiipx 23.8" FHD Monitor
23.8" Viewable (24" Class)
1920 x 1080 (FHD)
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.
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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 Acer Nitro KF240Y bmiipx 23.8" FHD Monitor
Dell S2721QS 27" 4K UHD IPS Monitor
Acer Nitro KF240Y bmiipx 23.8" FHD Monitor
| Criterion | Dell S2721QS 27" 4K UHD IPS Monitor | Acer Nitro KF240Y bmiipx 23.8" FHD Monitor |
|---|---|---|
| Rating | ★4.4(1,905)Amazon | ★4.6(4,309)Amazon |
Screen Size | 27" Viewable (27" Class) | 23.8" Viewable (24" Class) |
Resolution | 3840 x 2160 (4K UHD) | 1920 x 1080 (FHD) |
Aspect Ratio | 16:9 | 16:9 |
Screen Type | IPS (In-Plane Switching) | IPS (In-Plane Switching) |
Refresh Rate | 60 Hz | 144 Hz (Native) / 165 Hz (Overclock) |
Response Time | 4 ms (Gray-to-Gray Extreme Mode) | 2 ms (GtG) / 0.5 ms (Min) |
Brightness | 350 nits (Typical) | 250 nits (cd/m²) |
Contrast | 1,300:1 (Typical) | 1,000:1 (Static) / 100,000,000:1 (Dynamic) |
Color Gamut | 99% sRGB | 99% sRGB |
Color Depth | 1.07 Billion (10-bit via 8-bit + FRC) | 16.7M (6-bit + FRC) |
HDR | HDR Playback Support (Not VESA Certified) | HDR10 (Software support) |
Adaptive Sync | AMD FreeSync (40Hz - 60Hz) | AMD FreeSync Premium |
Viewing Angles | 178° (H) / 178° (V) | 178° (H) / 178° (V) |
Curvature | Flat | Flat |
Speakers | 2x 3 W (Stereo) | 2x 2 W (Stereo) |
Ports | 2x HDMI 2.0; 1x DisplayPort 1.2; 1x 3.5mm Audio Line-out | 2x HDMI 2.0; 1x DisplayPort 1.2; 1x 3.5mm Audio Out |
USB C | No | No |
Kvm | No | No |
Vesa | 100 x 100 mm | 100 x 100 mm |
Ergonomics | Height (110mm), Tilt (-5° to 21°), Swivel (-30° to 30°), Pivot (90°) | Tilt only (-5° to 20°) |
Power Consumption | 28 W (Typical) / 52 W (Max) / 0.3 W (Standby) | 20 W (Typical) / 0.5 W (Standby) |
Weight With Stand | 6,400 g (14.11 lbs) | 4,930 g (10.87 lbs) |
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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
Acer Nitro KF240Y bmiipx 23.8" FHD Monitor
23.8" Viewable (24" Class)
1920 x 1080 (FHD)
16:9
IPS (In-Plane Switching)
144 Hz (Native) / 165 Hz (Overclock)
2 ms (GtG) / 0.5 ms (Min)
Pros
- IPS panel ensures consistent colors and wide viewing angles ideal for mixed use
- 165Hz overclockable refresh rate provides smooth motion for competitive gaming
Cons
- Stand lacks height, swivel, and pivot adjustments (Tilt only)
- Peak brightness (250 nits) is standard and may struggle in bright rooms
Which one is better?
The Dell S2721QS 27" 4K UHD IPS Monitor is the better buy for most people - its 3840 x 2160 resolution crushes the Acer's 1920 x 1080. That said, grab the Acer Nitro KF240Y bmiipx 23.8" FHD Monitor if you need a budget-friendly gaming option with a 165Hz refresh rate.
Who should buy each?
Choose the Dell S2721QS 27" 4K UHD IPS Monitor if: you work with graphic design and need razor-sharp text, you consume a lot of video content at high resolution, or you appreciate fully adjustable ergonomic stands. (27" display, 60 Hz refresh)
Choose the Acer Nitro KF240Y bmiipx 23.8" FHD Monitor if: you want a budget-friendly gaming monitor with a fast refresh rate, you play competitive games where smooth motion is crucial, or you’re limited on desk space and need a lighter monitor. (23.8" display, 165 Hz refresh)
Quality Seekers
Higher user rating (4.6★ vs 4.4★) indicates better overall satisfaction
→ Choose Acer Nitro
Safe Choice Buyers
More widely tested with 4,309 reviews vs 1,905
→ Choose Acer Nitro
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose Dell S2721QS
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ Choose Acer Nitro
Conclusion
With the key differences outlined, the decision should be clearer. Both options deliver quality—choose the one that fits your priorities.
Bottom line: The Acer Nitro KF240Y bmiipx 23.8" FHD Monitor leads with a 4.6★ rating versus 4.4★. That said, Dell S2721QS 27" 4K UHD IPS Monitor could still be the right pick depending on your specific priorities.
Frequently Asked Questions
+Which is better: Dell S2721QS 27" 4K UHD IPS Monitor or Acer Nitro KF240Y bmiipx 23.8" FHD Monitor?
Dell S2721QS 27" 4K UHD IPS Monitor is the better choice if you prioritize razor-sharp 4k resolution (163 ppi) delivers excellent text clarity. Acer Nitro KF240Y bmiipx 23.8" FHD Monitor wins if you value ips panel ensures consistent colors and wide viewing angles ideal for mixed use. Both are rated highly (4.4★ vs 4.6★), so consider your specific needs and budget.
+What are the main differences between Dell S2721QS 27" 4K UHD IPS Monitor and Acer Nitro KF240Y bmiipx 23.8" FHD Monitor?
Key differences: Dell S2721QS 27" 4K UHD IPS Monitor offers razor-sharp 4k resolution (163 ppi) delivers excellent text clarity, while Acer Nitro KF240Y bmiipx 23.8" FHD Monitor stands out with ips panel ensures consistent colors and wide viewing angles ideal for mixed use. Consider that Dell S2721QS 27" 4K UHD IPS Monitor limited to 60hz, making it less suitable for fast-paced gaming. Meanwhile, Acer Nitro KF240Y bmiipx 23.8" FHD Monitor stand lacks height, swivel, and pivot adjustments (tilt only). 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.
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