LG
LG 34GX900A-B 34" Ultragear WQHD OLED Curved Gaming Monitor 240Hz
Bottom line: The LG 34GX900A-B 34" Ultragear WQHD OLED Curved Gaming Monitor 240Hz is a specs-and-price decision rather than a crowd-consensus one in the gaming monitors category, priced around $699.99. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Backed by LG's warranty and support channels
Cons
- ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
34 Inch UltraGear Curved Gaming MonitorProduct Highlights:34” UltraGear OLED: a 21:9 curved WQHD display that’s built for battleOutrageous OLED gaming speed at up to 240Hz and 0.03ms response timeSeamless frame sync with FreeSync Premium Pro and G-SYNC for stutter-free gaming.Stunning and bright OLED visuals with rich color, deep blacks, and 1.5M:1 contrastThe 34" UltraGear OLED's steep and dramatic 800R curve surrounds you in the actionConsole or PC connectivity: HDMI 2.1, DisplayPort 1.4 and USB Type-CProduct Features:The 240Hz OLED Smart gaming monitor that’s ahead of the (800R) curveThe…
SpecPicks Verdict
SpecPicks scored LG 34GX900A-B 34" Ultragear WQHD OLED Curved Gaming Monitor 240Hz… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. LG's gaming monitors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- LG USA AUTHORIZED - Includes 26 Months Extended Protection in ADDITION to the Included FULL Manufacturer Protection
- Immersive 34” UltraGear OLED Display – Experience next-level gaming on a 21:9 curved WQHD OLED with a steep 800R curve, delivering cinematic immersion, deep blacks, and brilliant color accuracy with up to 98.5% DCI-P3 coverage.
- Blazing-Fast OLED Performance – Dominate the battlefield with an ultra-smooth 240Hz refresh rate and near-instant 0.03ms (GtG) response time for seamless motion, reduced input lag, and zero ghosting in fast-paced gameplay.
- Tear-Free, Ultra-Smooth Gaming – Enjoy flawless frame syncing with AMD FreeSync Premium Pro and NVIDIA G-SYNC compatibility, eliminating stutter and screen tearing across PC and next-gen consoles.
- Brilliant HDR Visuals – See every detail with DisplayHDR True Black 400, 1.5M:1 contrast ratio, and up to 1300 nits peak brightness (APL 1.5%). Bright highlights and deep shadows bring lifelike depth and realism to every scene.
- Optimized for Gamers – Stay focused with an anti-glare OLED panel, plus built-in features like Dynamic Action Sync, Black Stabilizer, FPS Counter, and Crosshair for precise, competitive gameplay.
Full Specifications
| Brand | LG |
|---|---|
| Color | Black |
| Shape | Curved |
| Brightness | 275 Candela per Square Meter |
| Model Name | E990LG34GX900AB |
| Resolution | QHD Wide 1440p |
| Color Gamut | 98.5 |
| Pixel Pitch | 0.23 |
| Screen Size | 34 Inches |
| Aspect Ratio | 21:9 |
| Connectivity | USB |
| Display Type | OLED |
| Model Number | E990LG34GX900AB |
| Refresh Rate | 240 Hz |
| Adaptive Sync | FreeSync Premium Pro, G-Sync Compatible |
| Compatibility | PC |
| Mounting Type | Wall Mount |
| Response Time | 0.03 Milliseconds |
| Screen Finish | Matte |
| Viewing Angle | 178 Degrees |
| Full listing title | LG 34GX900A-B 34" Ultragear WQHD OLED Curved Gaming Monitor 240Hz, DisplayHDR Bundle with Elite Suite 18, 2X HDMI Cable and Deco Gear CPS Exclusive 26 Month Protection Pack (BEACH-CPS-26M1500) |
Ready to buy?
LG 34GX900A-B 34" Ultragear WQHD OLED Curved Gaming Monitor 240Hz, DisplayHDR Bundle with Elite Suite 18, 2X HDMI Cable and Deco Gear CPS Exclusive 26 Month Protection Pack (BEACH-CPS-26M1500) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-09-29. Price and availability subject to change.
Related Gaming Monitors
LG 34GX900A-B 34" Ultragear WQHD OLED Curved… head-to-head
Side-by-side specs, prices, and a pick for each matchup — no tab-switching.
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- How to Build a Windows 98 Retro PC in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
More reviews from the SpecPicks archive
Browse all reviews →- Bridging Retro Audio: Sound Blaster Legacy to a Modern Sound BlasterX G6
- Benchmarking Open LLMs for Tool-Use: RTX 3060 12GB vs Ryzen 5800X CPU-Only
- Ryzen 7 9800X3D vs 7800X3D upgrade guide
- Raspberry Pi AI Module in 2026: Can a Pi + Hailo Run Local LLMs?
- 1998 3dfx Voodoo2 SLI Build Guide: Period-Correct Glide Gaming with a CompactFlash Boot Drive
- Run Local LLMs on a Ryzen 5 5600G With No GPU (2026)
- Intel LLM-Scaler vLLM 1.4 on Arc Pro B70: What the Latest Driver Stack Means for Local Inference
- Best Gaming Monitor for Console + PC Dual Setup in 2026
- Retro Game Emulator Download 2026: Best Picks for AMD PCs
- 4K Mini-LED vs 240 Hz QD-OLED: Which Monitor for Work and Play?
- Claude Opus 4.8 Ships, Tops GPT-5.5 on Intelligence Index
- CRT vs LCD for Retro Gaming: Which Wins in 2026?
- Building a 2001 Pentium III + GeForce 3 Win98SE Gaming Rig: A 2026 Build Log
- Fine-Tune Video and Image Models at Scale: NeMo vs Diffusers
- AA-AgentPerf: What the New Agentic Benchmark Means for Local Coding Rigs
- AMD Ryzen 7 5800X3D Re-Review: DDR4's Last Gaming Champion in 2026
- ComfyUI on an RTX 3060 12GB: Real Image-Gen Throughput in 2026
- Quantization on a 12GB GPU: q4 vs q5 vs q8 Tok/s and Quality on the RTX 3060
- The Best Raspberry Pi Projects for Students in 2026 (With a Real Parts List)
- HiDream-O1-Image Debuts as Top Open-Weights Text-to-Image Model
- GLM-5.2 for Local Agents: Can a 12GB RTX 3060 Run Long-Horizon Tasks?
- Ryzen 7 5800X + RTX 3060 12GB: Best 1440p AM4 Build
- Best Game Controller for PC and PS5 in 2026
- Build a Raspberry Pi 4 Cyberdeck Music Workstation in 2026
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090