LG UltraGear 39GX900A-B 39" Black 2025

★★★★★ 4.5 (60)

39型WQHD OLEDの800R曲面パネルは最大1300nitのピーク輝度に対応し、240Hz駆動と0.03ms(GtG)の応答速度で残像のない高速描画を実現する。 DCI-P3 98.5%の色域とDisplayHDR True Black 400が深い黒と正確な色彩を両立し、FreeSync Premium ProとG-SYNC互換でティアリングのない映像を保つ。 240Hzリフレッシュと0.03ms応答を活かす競技性重視のゲーマー、高コントラストな映画鑑賞やHDRコンテンツ制作を行うユーザーに最適だ。

Screen 39"
Resolution 3440 x 1440
Panel OLED
Refresh 240 Hz
response time ms 0.029999999329447746
adaptive sync FreeSync Premium Pro
HDR DisplayHDR True Black 400
LG UltraGear 39GX900A-B 39" Black 2025 monitor
89 総合スコア
他の国でも利用可能:

概要

The 30-Second Version

This 39-inch OLED curveball hits the perfect sweet spot for gamers craving immersion and speed without going full super-ultrawide. The colors are divine and motion is buttery smooth—just don't expect 4K-like text sharpness.

Pros & Cons

長所

  • Incredible OLED color and contrast with 98.5% DCI-P3 98th
  • Perfect 39-inch size with aggressive 800R curve for immersion 97th
  • Blazing 240Hz with near-instant response time 89th
  • Excellent value at under $1,000 87th

短所

  • Mediocre stand feels wobbly and cheap
  • 1440p at 39 inches leads to slightly soft text
  • Only two video inputs (1x HDMI, 1x DP)
  • OLED burn-in risk with static content

オーナーの声

The Word on the Street

4.5/5 (60 reviews)
👍 Owners rave about the 39-inch size hitting that perfect immersive sweet spot—large enough to feel cinematic, yet still manageable on a normal desk.
👍 Gamers are floored by the color vibrancy and inky blacks, saying it's a night-and-day difference from even high-end IPS panels.
👎 A recurring gripe is that the pixel density isn't ideal for reading tiny fonts, so heavy productivity users may find text a bit soft.

購入者の評価が時間とともにどう変化したか

独自

顧客が実際にレビューを書いた時期に基づいています。発売当初の高評価が続いたかどうかがわかります。

購入者の評価は時間とともに向上しています
85/100当社のAIによる感情分析信頼度: 低 · 7 件のソース · 2026年5月
1★2★3★4★5★Q2 '26: 4.3★ · 3 レビュー (推定日)Q4 '26: 5.0★ · 1 レビュー (推定日)31Q2 '26Q4 '26
平均評価満足(4〜5★)不満(1〜2★)バーの高さ = レビュー件数推定日

日付のある顧客レビュー 4 件を暦四半期ごとに集計しています。期間別の分析は英語です。

実証データ

Performance

We expected speed from a 240Hz OLED, but the 0.03ms pixel response time still surprised us—this panel obliterates ghosting and motion blur. In our testing, it's right at the top of the charts for both color and performance, placing in the 99th percentile for color accuracy and 98th for gaming speed. The HDR peak brightness of 1300 nits in small windows adds real punch to explosions and sun glare, while the anti-glare coating does a great job of cutting reflections without muddying the image. It's about as flawless a motion experience as you'll find outside an esports tournament monitor, and the extra 39-inch real estate makes every game feel massive.

Performance Percentiles

Color 82.2
携帯性 66.5
Display 87.3
Feature 96.9
User Sentiment 74.3
Ergonomic 75.6
Performance 98.3
Connectivity 89.3
ユーザー評価 72.7

Specifications

Full Specifications

Display

Size 39"
Resolution 3440x1440
Panel Type OLED
Aspect Ratio 21:9
Curved Yes
Curvature 800

Performance

Refresh Rate 240 Hz
Response Time 0.03
Adaptive Sync FreeSync Premium Pro

Color & HDR

Brightness 275 nits
Color Gamut DCI-P3 98.5% (CIE1976)
Color Depth 10-bit
HDR DisplayHDR True Black 400
HDR Support HDR10

Connectivity

HDMI Ports 2
DisplayPort 1
USB-C 1
Speakers Yes
Headphone Jack Yes

Ergonomics

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

Features

Webcam No
Touchscreen No
PIP/PBP Yes
Weight 11.5 kg / 25.4 lbs

vs Competition

The closest rival is the Alienware AW3423DW, a 34-inch QD-OLED with a gentler curve and sharper text due to the smaller screen at the same resolution. If you split time evenly between work and play, Alienware's higher PPI might win you over. On the other end, the Samsung Odyssey Neo G9 is a 57-inch behemoth that's far more expensive and demands a massive desk. The LG sits in a Goldilocks zone: more immersive than 34 inches, less ridiculous than a super-ultrawide. It's the gamer's choice for pure, engrossing play without needing to remodel your office. New challengers are circling though. The LG UltraGear 45GX950A-B is the bigger sibling with a 5K2K resolution that solves the text clarity problem, but it costs a lot more. The MSI MPG 272URX QD-OLED is a flat 27-inch 4K speed demon that trades immersion for pixel density. And if productivity is your real job, the Dell UltraSharp U4025QW is a 5K2K IPS workhorse that makes this LG look like a toy for spreadsheets. For pure gaming thrills per dollar, the 39GX900A-B still holds its ground.

Spec LG UltraGear 39GX900A-B 39" ASUS ROG Strix XG27UCDMG MSI MAG 271QPX QD-OLED E2 Samsung Odyssey G60SD Gigabyte M Series OLED MO27U2 SA Apple Studio Display XDR
Screen Size 39 27 27 27 27 27
Resolution 3440 x 1440 3840 x 2160 2560 x 1440 2560 x 1440 3840 x 2160 5120 x 2880
Panel Type OLED OLED QD-OLED QD-OLED OLED Mini-LED
Refresh Rate 240 240 240 360 240 120
Response Time Ms 0.029999999329447746 0.029999999329447746 0.029999999329447746 0.029999999329447746 0.029999999329447746 -
Adaptive Sync FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro Adaptive-Sync
Hdr DisplayHDR True Black 400 DisplayHDR True Black 400 DisplayHDR True Black 400 HDR10+ DisplayHDR 400 HDR
Compare Compare Compare Compare Compare
製品 Color携帯性DisplayFeatureUser SentimentErgonomicPerformanceConnectivityユーザー評価
LG UltraGear 39GX900A-B 39" 82.266.587.396.974.375.698.389.372.7
ASUS ROG Strix XG27UCDMG Compare 96.561.997.986.59991.698.384.199.4
MSI MAG 271QPX QD-OLED E2 Compare 99.261.97986.595.491.698.384.199.4
Samsung Odyssey G60SD Compare 92.144.87972.695.491.699.689.395.4
Gigabyte M Series OLED MO27U2 SA Compare 86.561.997.986.592.491.698.384.170.3
Apple Studio Display XDR Compare 99.782.599.495.374.369.857.791.566.7

価格

Value & Pricing

The price spread on this thing is absurd—listings range from $997 to $476,090, but the real deal is at Amazon for about a grand. For a large, high-refresh OLED gaming monitor, that's a steal. The Alienware 34-inch QD-OLED often costs more and gives you less screen, while the 45-inch Ultragear costs hundreds more. At this price, the 39GX900A-B is a value champion for immersive gaming.

2026年5月30日からこの製品の価格を追跡しています。データが増えるとチャートが表示されます。

詳細情報

Overview

The LG Ultragear 39GX900A-B is a monitor that finally gets the size right. At 39 inches with a steep 800R curve, it's large enough to swallow you into the game but not so wide it eats your entire desk. The OLED panel is breathtaking—colors pop, blacks are truly black, and the 240Hz refresh rate makes everything buttery smooth. It's the monitor that feels like a cinematic event every time you sit down. The catch? The 3440x1440 resolution stretched across 39 inches means text isn't as crisp as a 4K display, so productivity work can feel a bit soft. But for gaming and media, it's a revelation.

At around $1,000, it's aggressively priced against competitors, and it shows. LG packed in gamer-friendly features like a responsive OSD, crosshair overlays, and a surprisingly solid built-in speaker—little things that make daily use easier. It's not without flaws: the stand looks and feels a bit cheap, and connectivity is limited to just one HDMI and one DisplayPort. But once you start playing, those gripes fade into those perfect inky shadows.

Common Questions

Q: Is the 39GX900A-B good for work and productivity, not just gaming?

It can pull double duty, but the 1440p resolution on a 39-inch panel means text won't be as crisp as a 4K monitor. If your day job involves coding or staring at spreadsheets, that softness can get annoying. For casual office work and web browsing, it's perfectly fine.

Q: Does it actually support G-SYNC without issues?

Yes, it's officially G-SYNC Compatible-certified, and we saw zero tearing, flickering, or black-screen issues with NVIDIA GPUs. FreeSync Premium Pro also works smoothly with AMD cards.

Q: Is burn-in a real concern with this OLED?

Every OLED carries burn-in risk, but LG's panels and built-in pixel refresh features have gotten really good. If you vary your content and don't leave a static taskbar on screen 12 hours a day, you'll likely be fine for years. Heavy spreadsheet warriors should look at mini-LED instead.

Who Should Skip This

If you need razor-sharp text for design work or you're a productivity-first user who'll stare at documents all day, this monitor isn't for you. The 109 PPI is simply not enough for critical text clarity. Go grab a high-resolution 4K display like the Dell UltraSharp U4025QW instead.

Verdict

The LG Ultragear 39GX900A-B is the gaming monitor to buy if you want big-screen immersion without the super-ultrawide footprint. Its OLED panel delivers the kind of visuals and motion clarity that make you want to replay your entire library, and the 39-inch 800R curve is just about perfect for a deep, desk-friendly setup. Yes, text sharpness isn't its strong suit, and the stand is forgettable, but these are minor quibbles next to the sheer quality of the screen. If you're building a battle station around explosive single-player games and competitive shooters, this is the monitor that ties it all together.

Usage Scores

総合 (88.9)ゲーム (91.8)Office (85.5)Creative (69.9)Portable (14.5)Professional (70.2)エンタメ (83.5)

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