21.45″ Asus C2221HF – Specs & Features
Asus ● Monitor ●
At a glance
The Asus C2221HF is a 21.45-inch Full HD Monitor designed for gaming and multimedia. It features a IPS panel for accurate colours and wide viewing angles. The Monitor is suitable for gaming and creative work and includes 48 Hz - 100 Hz refresh rate and HDMI connectivity. However, it may not be ideal for blacks appear grey in dark environments compared to OLED or VA. It scores Great — 7.2/10 across our display performance benchmarks.
- IPS panel delivers consistent colour accuracy across a 178° horizontal and vertical viewing angle.
Model Year
2024
Size Class
21"
Panel Type
IPS
Scores and analysis are based on DisplayInput – Monitor & TV Specs Comparison's display benchmark methodology across 6 verified specifications. Data sourced from Asus's official specifications and independent lab measurements.
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Display Performance
Overall Score
Combined display quality score
72
/100
Refresh Rate
Higher is smoother — 144Hz+ ideal for gaming
42
/100
Response Time
Lower is better — 1ms GtG excellent
40
/100
Brightness
Panel brightness in nits — 1000+ for strong HDR
25
/100
The Asus C2221HF achieves an overall display score of 7.2/10. With a 100Hz refresh rate and 5ms response time, it delivers smooth visuals for everyday use. Typical brightness of 250 nits is adequate for indoor use.
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Who Should Buy the Asus C2221HF
Perfect For
🖱️
Everyday Power Users 100Hz
Scrolling feels instant, not sluggish
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Office & Remote Workers IPS
Accurate colour at every viewing angle
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Students & Everyday Users All-Round
One screen handles classes, calls, and streaming
Not Ideal For
✨
HDR Enthusiasts No HDR
No certified HDR. Streaming HDR-flagged content will be downgraded to SDR automatically.
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Colour-Critical Creators Std Gamut
Colour gamut is below the 90% DCI-P3 threshold for professional creative work. Edited photos may not match output.
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Dark-Room Cinema Fans IPS Panel
IPS produces a subtle grey glow in completely dark rooms. VA or OLED produces genuinely black dark scenes.
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Quick Advice: Buy this for
reliable everyday productivity.
Confirm the refresh rate and panel type align with your primary use before purchasing.
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Real-World Use Cases
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Colour accurate at every angle, all day
IPS stays consistent at 178° — shared-screen reviews and standing desks included.
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Smooth playback for YouTube and Netflix
Adequate refresh rate and colour output for all major streaming platforms at full quality.
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Sharp, clear display for calls and meetings
Full HD resolution keeps video call grids and shared screen content legible at comfortable viewing distance.
Each scenario is derived from confirmed Asus C2221HF specs. Real-world results vary with system configuration and content source.
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Pros & Cons
Pros
- IPS panel consistent 178°/178° viewing angles with accurate, uniform color reproduction
- 250 cd/m² display comfortable brightness for extended daily use
- Full HD at 102 PPI clear image for everyday computing, gaming and media consumption
- 100Hz refresh rate smooth, comfortable scrolling for productivity and media use
- 1 ms (MPRT) significantly sharper moving images with reduced blur perception
Cons
- IPS contrast (1300 : 1) blacks appear grey in dark environments compared to OLED or VA
- Full HD resolution adequate for the size but detail is limited vs QHD alternatives
- Tilt-only stand no height adjustment, swivel or portrait pivot available
- No USB-C or Thunderbolt modern laptops need a separate adapter for single-cable setup
- No built-in speakers a separate audio solution is required for sound output
We identified 5 advantages and 5 limitations for the Asus C2221HF. The trade-offs are worth evaluating against your specific needs before purchasing. All 10 points are derived from verified specifications and independently confirmed benchmark data.
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Score & Ratings
7.2/10
Great
The Asus C2221HF earns a strong overall score of 7.2/10. Our editors evaluate each Monitor across display quality, colour accuracy, motion performance, and connectivity.
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Basic Information
5
| Specification | Value | 💡 What It Means |
|---|---|---|
| Brand | Asus | |
| Model | C2221HF | |
| Series | - | |
| Model Alias | - | |
| Model Year | 2024 |
✓ Good 2024 — recent model. Most modern features included.
|
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Display
8
| Specification | Value | 💡 What It Means |
|---|---|---|
| Size Class | 21.45-inch |
△ Average 21" — compact. Good as a secondary screen or space-constrained desk.
|
| Panel Type | IPS |
✓ Good IPS — consistent colour accuracy across 178° viewing angle. No colour shift when viewed from the side.
|
| Curvature | -- | |
| Resolution | 1920 x 1080 |
△ Average Full HD (1920×1080) — adequate up to 24–27". Pixels become visible on larger panels at close range.
|
| Aspect Ratio | 1.778:1 | |
| Pixel Density | 102 PPI |
△ Average 102 PPI — adequate sharpness for monitor use. Comfortable for text and media at 50–80cm.
|
| Pixel Pitch | 0.248 mm (millimeters) |
✓ Good 0.248 mm (millimeters) pitch — fine. Comfortable sharpness at desk viewing distances.
|
| Display Area | 86.68 % (percent) |
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Color & HDR
5
| Specification | Value | 💡 What It Means |
|---|---|---|
| Color Depth | 8 bits (6 bits + FRC) (FRC: Yes) |
△ Average 8-bit — 16.7 million colours. Fine for SDR and everyday use; banding may appear in HDR gradients.
|
| Colors | 16777216 colors |
△ Average 16.7 million colours (8-bit) — standard for SDR; gradient banding may appear in HDR.
|
| sRGB | - |
sRGB not listed separately. DCI-P3 coverage (above) is the more relevant metric for modern HDR content.
|
| DCI-P3 Coverage | - |
DCI-P3 coverage not published by the manufacturer for this model.
|
| HDR Support | - |
☀️
Brightness & Contrast
3
| Specification | Value | 💡 What It Means |
|---|---|---|
| Brightness (Typical) | 250 cd/m² |
△ Average 250 cd/m² — comfortable indoors. May wash out next to a bright window or in direct sunlight.
|
| Peak Brightness | - |
OLED brightness varies per pixel and scene. Manufacturers often omit a fixed nit figure; contrast quality exceeds most LED panels anyway.
|
| Contrast | 1300 : 1 |
△ Average 1300 : 1 — standard IPS-level. Blacks appear slightly grey in very dark rooms.
|
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Performance
3
| Specification | Value | 💡 What It Means |
|---|---|---|
| Refresh Rate | 48 Hz - 100 Hz |
△ Average 75Hz — minor improvement over 60Hz for scrolling and animations. Not a meaningful gaming upgrade.
|
| Response Time | 5 ms (GtG)1 ms (MPRT) |
△ Average 5 ms (GtG)1 ms (MPRT) GtG — acceptable for office and casual gaming. Some blur visible in very fast scenes.
|
| Adaptive Sync | VESA AdaptiveSync |
✓ Good VESA AdaptiveSync — industry-standard VRR. Tear-free gaming across GPU brands.
|
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Display Technologies
1
| Specification | Value | 💡 What It Means |
|---|---|---|
| Advanced Display Technologies | Panel Technology: - Backlight: W-LED Viewing Angles: 178° / 178° (H / V) MPRT Response: 1 ms (MPRT) Dynamic Contrast: - Input Lag: - Screen Coating: Anti-glare/Matte |
Anti-glare matte coating. 178° wide viewing angles.
|
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Camera
1
| Specification | Value | 💡 What It Means |
|---|---|---|
| Camera | No |
⚠ Limited No built-in camera. An external webcam is needed for video calls.
|
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Audio
1
| Specification | Value | 💡 What It Means |
|---|---|---|
| Audio | 3.5 mm Audio Out |
3.5mm headphone/audio output — connects wired headphones or routes audio to external speakers.
|
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Connectivity & Ports
2
| Specification | Value | 💡 What It Means |
|---|---|---|
| Ports | 1 x HDMI 1.4 1 x D-sub 1 x 3.5 mm Audio Out High-bandwidth Digital Content Protection (HDCP) 1.4 |
✓ Good HDMI — standard display connection for consoles and laptops.
|
| Wireless | - |
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Ergonomics
6
| Specification | Value | 💡 What It Means |
|---|---|---|
| VESA Mount | 100 x 100 mm |
✓ Good VESA-compatible — fits any standard monitor arm, desk mount, or wall bracket. No proprietary hardware needed.
|
| Height Adjustment | No | |
| Pivot | No |
⚠ Limited No pivot — cannot rotate to portrait orientation.
|
| Swivel | No |
⚠ Limited No swivel — stand cannot rotate left/right. Adjust by moving the whole monitor.
|
| Tilt | -5° to +23° |
✓ Good Tilt ±5° — adjustable screen angle reduces neck strain and matches your eye level.
|
| Removable Stand | Yes |
✓ Good Stand detaches cleanly from the panel — mount on any VESA arm or wall bracket without a leftover collar.
|
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Gaming Features
1
| Specification | Value | 💡 What It Means |
|---|---|---|
| Gaming Features | Adaptive-Sync technology Trace Free Technology |
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Smart & Software Features
2
| Specification | Value | 💡 What It Means |
|---|---|---|
| Operating System | - |
No smart OS — this is a PC monitor. All input comes from connected computers or consoles.
|
| Smart Features | Color Augmentation mode Color Temperature Selection (4 modes) Flicker-free technology Frameless Design Low Blue Light QuickFit |
✓ Good Color Augmentation mode
Color Temperature Selection (4 modes)
Flicker-free technology
Frameless Design
Low Blue Light
QuickFit — software features including OSD controls and display calibration tools.
|
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Power Consumption
5
| Specification | Value | 💡 What It Means |
|---|---|---|
| Voltage | 100–240V |
✓ Good Universal or wide-range power supply. Compatible with outlets in the US, UK, EU, and most countries.
|
| Frequency | 50/60Hz |
50/60Hz AC supply — compatible with worldwide power grids including US, UK, EU, and AU.
|
| Average Consumption | 12W |
✓ Good 12W — very energy efficient. Low electricity cost even for all-day use.
|
| Maximum Consumption | - |
Peak power draw not published. Typically 2–3× the average consumption figure.
|
| Standby | 0.3W |
✓ Good 0.3W standby — near-zero idle power. Excellent energy compliance.
|
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Certificates
1
| Specification | Value | 💡 What It Means |
|---|---|---|
| Certificates | Energy Star TCO Certified Displays TÜV Rheinland Low Blue Light Certified TÜV Rheinland Flicker-free Certified |
✓ Good ENERGY STAR — US energy efficiency standard. CE — meets EU safety & electromagnetic standards. TCO Certified — sustainable IT product standard.
|
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Design, Build & Dimensions
9
| Specification | Value | 💡 What It Means |
|---|---|---|
| Without Stand Width | 493.6 mm |
Panel dimensions without stand attached. Use for wall-mount space planning.
|
| Without Stand Height | 291.2 mm |
Panel dimensions without stand attached. Use for wall-mount space planning.
|
| Without Stand Depth | 49.7 mm |
Panel dimensions without stand attached. Use for wall-mount space planning.
|
| Without Stand Weight | 2.3 kg |
✓ Good 2.3 kg — lightweight; easy to position or wall-mount solo.
|
| With Stand Width | 493.6 mm |
Overall footprint with stand. Use when planning desk or shelf placement.
|
| With Stand Height | 357.6 mm |
Overall footprint with stand. Use when planning desk or shelf placement.
|
| With Stand Depth | 204.4 mm |
Overall footprint with stand. Use when planning desk or shelf placement.
|
| With Stand Weight | 2.7 kg |
✓ Good 2.7 kg — lightweight; easy to position or wall-mount solo.
|
| Color | Black |
Available colour finish for this unit.
|
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Operating Conditions
2
| Specification | Value | 💡 What It Means |
|---|---|---|
| Temperature | 0°C – 40°C |
Operating environment range. Keep within these limits for reliable long-term performance.
|
| Humidity | - |
Operating environment not specified. Standard indoor conditions (15–35°C, 20–80% humidity) apply.
|
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Frequently Asked Questions
01 What type of panel does the Asus C2221HF use? ›
It features an IPS panel, which delivers wide 178° viewing angles and consistent colour accuracy. Colours stay accurate whether you're sitting centred or off to the side.
02 How smooth is the Asus C2221HF for everyday use? ›
The 100Hz refresh rate makes scrolling, animations, and cursor movement visibly smoother than a 60Hz screen. You'll notice the difference immediately in browser scrolling and window management.
03 Who is the Asus C2221HF best for? ›
It is best suited for office users. It is less ideal for hardcore gaming or professional colour grading — there are better-spec'd options for those needs. Check the "Who Should Buy" section above for a full profile breakdown.
04 Does the IPS panel cause issues in dark rooms? ›
IPS panels produce a slight glow in very dark rooms when displaying black content — this is normal for the technology. It is most noticeable in pitch-black rooms. For dark-room cinematic use, a VA or OLED panel would produce deeper blacks. For everyday and office use it is not an issue.
05 Is the Asus C2221HF worth buying in 2026? ›
Asus C2221HF remains a competitive option in 2026. Before purchasing, compare the current street price against newer models at the same price point to confirm it offers the best value for your use case.
Questions are generated from Asus C2221HF specifications. For full technical data, see the Specifications tab above.
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Reviews
Disclaimer: You can write your own disclaimer from APS Settings -> General -> Disclaimer Note.