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LG UltraGear 27GX790A-B 27" OLED QHD 480Hz Gaming Monitor – Open Box

Description

Up for sale is an LG UltraGear 27GX790A-B, one of LG’s latest OLED esports-grade monitors, featuring an industry-leading 480Hz refresh rate at QHD (1440p).

This is not your typical OLED panel — it’s specifically engineered for competitive gaming, combining ultra-high refresh rate + near-instant response time + OLED contrast in a 27" form factor.

Unit is open box, professionally inspected, and guaranteed fully functional.

Key Highlights

480Hz refresh rate (native) – extremely rare in OLED panels
0.03ms GtG response time – virtually no motion blur
OLED panel – true blacks, infinite contrast
QHD (2560×1440) – ideal balance of clarity and performance
G-SYNC Compatible + FreeSync Premium Pro
DisplayHDR True Black 400
Full ergonomic stand (height / tilt / swivel / pivot)

Technical Specifications

Model: 27GX790A-B
Panel Size: 26.5" (marketed as 27")
Panel Type: OLED
Resolution: 2560 × 1440 (QHD)
Refresh Rate: 480Hz
Response Time: 0.03ms (GtG)
Brightness: ~275 nits (typical), higher HDR peak
Color Gamut: ~98.5% DCI-P3
HDR: DisplayHDR True Black 400 / HDR10
Contrast Ratio: Infinite (OLED)

Connectivity:

1× DisplayPort 2.1
2× HDMI
USB Hub (Upstream + 2× Downstream)
3.5mm headphone out (with mic support)

Mounting:

VESA 100×100

Condition

Open box – excellent condition
Panel tested (no burn-in observed)
Inputs and refresh rates verified
Clean unit, minimal handling wear

What’s Included

LG 27GX790A-B Monitor
Original Stand
Power Cable / Adapter
Display cable (if included with unit)

Compatibility Notes (Important)

To fully utilize 480Hz, your setup must support it:

Requires high-end GPU (RTX 40-series / RX 7000+)
Requires DisplayPort 2.1 or compatible bandwidth
Many systems will run:
- 144Hz / 240Hz / 360Hz without issue
- 480Hz only with proper hardware + settings

Console support:

PS5 / Xbox Series X supported via HDMI (limited to lower refresh rates)

Shipping

Ships from Mississauga, Ontario
Professionally packed for safe transit (Original Box)
Fast tracked shipping
Local pickup available

Contact us

We can be contacted at any time through messages if you have any questions, comments or product requests. We will respond to you within 24 hours and do our best to help you out! We encourage our customers to contact us with any questions or concerns! We'd like to be sure you are completely satisfied with your purchase.

Terms & Conditions	Product will not be shipped until payment is received. Determining compatibility with your existing parts, hardware, and/or software is the sole responsibility of the buyer.
Shipping	We ship to US and Canada. For other countries please contact us. Domestic Buyers: Price does not include applicable taxes for Canadian residents. International Buyers: Documentation of purchase will be provided with parcel. Please note we are not responsible for any Customs, duties, taxes, charges in destination countries, or any delays in Customs clearance procedure. Orders usually ship within 1-3 business days, after payment is received. Combined shipping & handling is available for multiple purchases. For multiple purchases, our checkout system will determine the shipping cost based on shipping profiles in each listing. All additional shipping discounts will be applied automatically. Please verify your address during checkout. We are not responsible for any wrong or incorrect addresses.
Disclaimer	Every effort has been made to ensure the accuracy of all information contained in this advertisement. QuantumConnection cannot possibly anticipate broad spectrum compatibility with all components available on the market today. Please understand the item offered and be sure you have the technical knowledge to use or install the item. Most information is available on the internet from the manufacturer's website.

QuantumConnect