LG 24MP400-B 24" Black 2021

★★★★★ 4.5 (1,192)

The 24-inch IPS panel with a 75Hz refresh rate and AMD FreeSync delivers fluid, tear-free visuals for casual gaming and everyday tasks. Its three-side borderless design and Reader Mode with flicker-safe technology make it a comfortable, space-saving choice for long work sessions. This monitor is best for home office users and students who want a smooth, eye-friendly display for productivity and light entertainment.

Screen 24"
Resolution 1920 x 1080
Panel IPS
Refresh 75 Hz
response time ms 5
adaptive sync FreeSync
LG 24MP400-B 24" Black 2021 monitor
44 Overall Score

No current retailer price

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Snapshot

The 30-Second Version

A budget 24-inch IPS monitor that looks and feels more expensive than it is. Great for work and casual gaming, but skip it if you need height adjustment or more than one HDMI port.

Pros & Cons

Pros

  • Vibrant IPS panel with accurate colors for the price 89th
  • 75Hz with FreeSync makes casual gaming feel smooth 85th
  • Nearly borderless design looks way more expensive than it is
  • Reader Mode and Flicker Safe are genuinely easy on the eyes

Cons

  • Only one HDMI port, no DisplayPort
  • Stand has no height adjustment and tilts slightly downward
  • Wake-from-sleep glitches at 75Hz are a real annoyance
  • No built-in speakers

What owners think

The Word on the Street

4.5/5 (1192 reviews)
👍 Owners consistently rave about the vibrant IPS display and how good it looks for the price.
👍 The nearly borderless design gets a lot of love, with people saying it looks way more premium than it costs.
🤔 A few folks mention the stand tilts slightly downward and the lack of height adjustment is annoying.

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews - so you can see whether early praise held up.

Owner sentiment has improved over time
86/100Our AI sentiment readmedium confidence · 11 sources · Jun 2026
1★2★3★4★5★Q4 '22: 4.0★ · 1 reviewQ4 '23: 3.0★ · 2 reviewsQ1 '24: 5.0★ · 4 reviewsQ4 '24: 5.0★ · 1 reviewQ3 '25: 5.0★ · 1 reviewQ4 '25: 5.0★ · 2 reviews124112Q4 '22Q4 '23Q1 '24Q4 '24Q3 '25Q4 '25
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews

Based on 11 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

The 75Hz refresh rate and 5ms response time put this firmly in casual gaming territory, and that's fine. What surprised us is how well the IPS panel holds up for the price. Colors look accurate out of the box, and the FreeSync support actually makes a difference if you're running an AMD card. The 72% NTSC coverage is nothing to write home about, but for office work, web browsing, and lighter games, it's more than adequate. Just don't expect to win any esports tournaments on this thing.

Performance Percentiles

Color 15.8
Portability 49.9
Display 38.4
Feature 19.8
User Sentiment 84.7
Ergonomic 47.7
Performance 44.2
Connectivity 21.5
Social Proof 89.4

Specifications

Full Specifications

Display

Size 24"
Resolution 1920x1080 (Full HD)
Panel Type IPS
Aspect Ratio 16:9
Curved No
Screen Finish matte

Performance

Refresh Rate 75 Hz
Response Time 5
Adaptive Sync FreeSync

Color & HDR

Color Gamut NTSC 72%

Connectivity

HDMI Ports 1
Speakers No

Ergonomics

Tilt Yes
VESA Mount 75x75

Features

Weight 2.6 kg / 5.7 lbs

vs Competition

The LG 24MP400-B sits in a weird spot. It's not as feature-rich as the Dell S2725QC, which gives you 4K and USB-C for more money, and it's nowhere near the gaming chops of the MSI MAG 271QPX QD-OLED or the ASUS TUF Gaming VG34VQL1B. But those are all significantly more expensive. For a budget 1080p IPS panel, the LG's main competition is really other 24-inch budget monitors, and it holds its own there. The BenQ MA270U is a step up if you want better color accuracy for creative work, but you'll pay for it.

Spec LG 24MP400-B 24" ASUS ROG Strix XG27UCDMG Dell UltraSharp U4025QW MSI MAG 271QPX QD-OLED E2 Alienware AW-Series AW3425DW Samsung Odyssey G60SD
Screen Size 24 27 39.70000076293945 27 34 27
Resolution 1920 x 1080 3840 x 2160 5120 x 2160 2560 x 1440 3440 x 1440 2560 x 1440
Panel Type IPS OLED IPS QD-OLED QD-OLED OLED
Refresh Rate 75 240 120 240 240 360
Response Time Ms 5 0.029999999329447746 5 0.029999999329447746 0.029999999329447746 0.029999999329447746
Adaptive Sync FreeSync FreeSync Premium Pro Adaptive-Sync FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro
Hdr - DisplayHDR True Black 400 DisplayHDR 600 DisplayHDR True Black 400 DisplayHDR 400 True Black HDR10+
Compare Compare Compare Compare Compare
Product ColorPortabilityDisplayFeatureUser SentimentErgonomicPerformanceConnectivitySocial Proof
LG 24MP400-B 24" 15.849.938.419.884.747.744.221.589.4
ASUS ROG Strix XG27UCDMG Compare 96.157.897.98499.290.99881.499.3
Dell UltraSharp U4025QW Compare 98.276.698.795.885.490.95699.397.9
MSI MAG 271QPX QD-OLED E2 Compare 99.157.877.48495.690.99881.499.3
Alienware AW-Series AW3425DW Compare 9973.985.889.995.690.99895.497.9
Samsung Odyssey G60SD Compare 90.44077.467.895.690.999.687.794.7

Price

Value & Pricing

At around $160 USD, this is a solid deal. You're getting a 24-inch IPS panel with FreeSync and a design that looks like it belongs on a more expensive desk. The lack of height adjustment and single HDMI port sting a bit, but for the money, it's hard to complain too loudly. If you need a second monitor or a budget primary for work and light gaming, this is a no-brainer.

Read more

Overview

The LG 24MP400-B is a budget 24-inch IPS monitor that punches above its weight for everyday work and casual gaming. The one thing to know: you're getting a genuinely nice-looking 1080p panel with FreeSync and 75Hz for around $160, and most people who buy it end up pretty happy. It's not going to blow anyone away on paper, but the real-world experience is better than the spec sheet suggests.

Common Questions

Q: Is this monitor good for gaming?

For casual gaming, yes. The 75Hz refresh rate and FreeSync support make games feel smoother than a standard 60Hz monitor. But if you're into competitive shooters or fast-paced esports, you'll want something with a higher refresh rate and lower response time.

Q: Does it have built-in speakers?

No, there are no built-in speakers. You'll need external speakers or headphones. The single HDMI port carries audio, but you'll need something to actually play it through.

Q: Can I mount this monitor on a VESA arm?

Yes, it has a standard 75x75mm VESA mount. The included stand is basic with only tilt adjustment, so if you want height adjustment or a cleaner setup, a VESA arm is a solid upgrade.

Who Should Skip This

If you're looking for a high-refresh gaming monitor or something with USB-C connectivity, this isn't it. Go grab the MSI MAG 271QPX QD-OLED if you want top-tier gaming performance, or the Dell S2725QC if you need USB-C and 4K. The LG is for people who want a solid, affordable everyday monitor and don't need the extras.

Verdict

The LG 24MP400-B is a great budget monitor for office work, web browsing, and casual gaming. It's not going to impress anyone with its specs, but the IPS panel looks good, FreeSync works, and the nearly borderless design is a nice touch. If you need a reliable 24-inch 1080p monitor without spending a fortune, this is one of the best options out there. Just know what you're getting: a solid everyday monitor, not a gaming powerhouse.

Usage Scores

Overall (44.4)Gaming (31.6)Office (40.6)Creative (26.7)Portable (25.5)Professional (29.9)Entertainment (29.1)
  • Overall44.4
  • Gaming31.6
  • Office40.6
  • Creative26.7
  • Portable25.5
  • Professional29.9
  • Entertainment29.1

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