LG U631A-B 32U631A-B 32" Black

★★★★☆ 4.4 (191)

A 100Hz IPS panel with G-Sync compatibility delivers smoother motion than typical office displays, backed by 99% sRGB coverage for accurate color work. The slim design and USB-C with 15W power delivery reduce desk clutter, while the 5ms response time minimizes blur without sacrificing color quality. This monitor is best for office professionals who need a large, crisp QHD workspace with smooth 100Hz scrolling and easy single-cable laptop connectivity.

Screen 31.5
Resolution 2560x1440
Panel IPS
Refresh 100 Hz
response time ms 5
adaptive sync Adaptive-Sync
HDR HDR10
LG U631A-B 32U631A-B 32" Black monitor
62 Overall Score
Also available in:

Snapshot

Pros & Cons

Pros

  • Strong social proof (86th percentile) 86th
  • Strong feature (72th percentile) 72th
  • Strong display (69th percentile) 69th

Cons

  • Below average user sentiment (18th percentile)

What owners think

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 held steady over time
70/100Our AI sentiment readlow confidence · 7 sources · May 2026
1★2★3★4★5★Q2 '25: 3.7★ · 3 reviewsQ3 '25: 4.6★ · 15 reviewsQ4 '25: 4.5★ · 16 reviewsQ1 '26: 4.6★ · 14 reviewsQ2 '26: 4.0★ · 6 reviews1131516146Q4 '21Q3 '22Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews
  1. Q2 202661/1004.1★7 reviews

    Most buyers found the monitor good value with clear picture, but a defect causing purple lines and mixed feedback on brightness/ergonomics lowered sentiment.

    • Purple lines appeared and multiplied after three months; one review warns to avoid this model.
    • Brightness adequate for some, but barely enough; HDR underwhelming; not ideal for bright rooms.
    • No height adjustment, limited swivel; base moves with swivel; riser or stand recommended.
    • USB-C power delivery only 10-15W; insufficient to charge laptops, requires separate charger.
  2. Q1 202668/1004.5★4 reviews

    Buyers praise screen real estate and color accuracy but report issues with sturdiness of the stand, missing built-in speakers, and video card compatibility requirements.

    • Large 32-inch screen excellent for multitasking and professional work.
    • Stand is not sturdy even after proper installation.
    • Monitor lacks built-in speakers, a surprising omission for some buyers.
    • Requires video card upgrade for full resolution; works well after that.
  3. Q4 202567/1005.0★3 reviews

    Buyers praised the large, vivid screen for multitasking, but noted small fonts on a 23-inch model and gave 0-star ratings despite positive comments.

    • Large screen with bright, vivid colors ideal for multitasking with a MacBook.
    • Fonts on 23-inch model are small; may need adjustment or larger size.
    • Great customer service experience reported by one buyer.
    • 0-star ratings given despite positive review content, possible rating errors.

Based on 56 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

Performance Percentiles

Color 57.1
Portability 55.1
Display 69.1
Feature 72.4
User Sentiment 18
Ergonomic 49
Performance 53.2
Connectivity 46.8
Social Proof 86

Specifications

Full Specifications

Display

Size 31.5"
Resolution 2560 (QHD)
Panel Type IPS
Aspect Ratio 16:9
Curved No

Performance

Refresh Rate 100 Hz
Response Time 5
Adaptive Sync Adaptive-Sync

Color & HDR

Brightness 250 nits
Color Gamut 99% sRGB
Color Depth 16.7M (Number of Colors)
HDR HDR10
HDR Support HDR10

Connectivity

HDMI Ports 1
DisplayPort 0
USB-C 1
Speakers No
Headphone Jack Yes

Ergonomics

Height Adjustable No
Tilt Yes
Swivel No
Pivot No
VESA Mount 100x100

Features

Webcam No
Touchscreen No
PIP/PBP No
Weight 6.5 kg / 14.3 lbs

vs Competition

Spec LG U631A-B 32U631A-B 32" ASUS TUF Gaming VG34VQL1B Dell S2725QC S2725QC SANSUI 27 inch MSI Optix MAG342CQR Alienware AW-Series AW2724HF
Screen Size 31.5 34 27 27 34 27
Resolution 2560x1440 3440 x 1440 3840 x 2160 2560 x 1440 3440x1440 1920 x 1080
Panel Type IPS VA IPS IPS VA IPS
Refresh Rate 100 165 120 200 144 360
Response Time Ms 5 1 8 1 1 0.5
Adaptive Sync Adaptive-Sync FreeSync Premium FreeSync Premium FreeSync FreeSync FreeSync Premium
Hdr HDR10 DisplayHDR 400 HDR HDR HDR HDR10
Compare Compare Compare Compare Compare
Product ColorCompactDisplayFeatureUser SentimentErgonomicPerformanceConnectivitySocial Proof
LG U631A-B 32U631A-B 32" 57.155.169.172.4184953.246.886
ASUS TUF Gaming VG34VQL1B Compare 9577.278.897.328.272.17899.986
Dell S2725QC S2725QC Compare 64.582.488.472.495.872.144.287.795.6
SANSUI 27 inch Compare 92.81669.172.489.690.485.277.590.9
MSI Optix MAG342CQR Compare 72.982.478.897.3072.173.896.886
Alienware AW-Series AW2724HF Compare 84.355.151.372.475.690.495.189.895.6

Price

Value & Pricing

From $100 11 offers across 5 retailers
Best Buy 5 offers From $100
B&H Photo 2 offers From $197
Amazon 2 offers From $241
Adorama 1 offers From $249
Newegg 1 offers From $249

Price History

New Refurbished
$50 $100 $150 $200 $250 $300 May 2May 11May 26Jun 6Jun 23 $249

Usage Scores

Overall (61.9)Gaming (51.4)Office (65.5)Creative (54.1)Portable (10.5)Professional (55.6)Entertainment (52.9)

A full written review is coming soon. The specs, scores, prices and charts above are always up to date.

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