LG has unveiled its latest UltraGear OLED gaming monitor, the 27GX790B, featuring a staggering 720Hz refresh rate and a 0.2ms response time. This 27-inch display is designed for competitive gamers who demand the smoothest possible experience, and it comes with a price tag of €899 (currently discounted to €848.03).
What Makes the LG 27GX790B Stand Out?
The LG 27GX790B is not just another gaming monitor; it's a statement piece for esports enthusiasts. Its OLED panel delivers vibrant colors and deep blacks, while the Extreme Dual Mode allows users to switch between two performance profiles: 540Hz at QHD resolution (quality mode) or 720Hz at HD resolution (performance mode). This flexibility means you can prioritize visual fidelity or raw speed depending on the game.
With a 0.2ms response time, motion blur is virtually eliminated, giving players a split-second advantage in fast-paced titles. Whether you're into first-person shooters or racing games, this monitor aims to keep up with your reflexes.

Key Specifications and Features
Beyond the headline numbers, the 27GX790B packs a range of features that competitive gamers will appreciate. It supports both AMD FreeSync Premium Pro and Nvidia G-Sync (VRR), ensuring tear-free and stutter-free gameplay when paired with a compatible GPU. Connectivity options include HDMI 2.1, DisplayPort 2.1, and USB-C, making it versatile for PC and console setups.
- 27-inch OLED panel with QHD resolution (in quality mode)
- Extreme Dual Mode: 540Hz at QHD or 720Hz at HD
- 0.2ms response time for near-instantaneous pixel transitions
- AMD FreeSync Premium Pro and Nvidia G-Sync support
- HDMI 2.1, DisplayPort 2.1, and USB-C connectivity
- Price: €899 (currently €848.03)
How Does It Compare to Other Gaming Monitors?
To put the 27GX790B's specs into perspective, here's a comparison with typical high-refresh gaming monitors:
| Feature | LG 27GX790B | Typical 240Hz Monitor | Typical 360Hz Monitor |
|---|---|---|---|
| Panel Type | OLED | IPS/TN | IPS/TN |
| Max Refresh Rate | 720Hz (HD) / 540Hz (QHD) | 240Hz | 360Hz |
| Response Time | 0.2ms | 1ms | 0.5ms |
| Resolution | QHD (540Hz) / HD (720Hz) | QHD or FHD | FHD |
| Adaptive Sync | FreeSync Premium Pro, G-Sync | FreeSync/G-Sync Compatible | FreeSync/G-Sync Compatible |
| Price | ~€850 | ~€300-500 | ~€600-800 |
As the table shows, the LG monitor offers a significant leap in refresh rate and response time, albeit at a higher price point. For competitive players, the difference between 240Hz and 720Hz can be felt in fast-paced scenarios, but it requires a powerful GPU to drive such high frame rates.
Who Should Buy the LG 27GX790B?
This monitor is clearly targeted at serious esports athletes and enthusiasts who want every possible edge. If you play games like Counter-Strike 2, Valorant, or Overwatch 2 at a high level, the 720Hz mode could provide a tangible benefit in tracking and flick shots. However, to fully utilize it, you'll need a top-tier graphics card and a CPU that can push frames well beyond 500 fps. The background to this story is set out in LG UltraGear 25G590B: First 1000Hz Native Gaming Monitor. A related thread runs through AGON QD-OLED Monitor: 31.5-Inch 4K 240Hz Gaming Display. Earlier coverage in Asus ROG Swift OLED Monitors: 480Hz Dual Mode and Dolby Vision shows how the argument developed.
Casual gamers or those on a budget might find better value in a 240Hz or 360Hz monitor, as the returns diminish beyond a certain point. But for those who demand the absolute best, the 27GX790B is a compelling option. A closer look at the same subject appears in Philips Evnia 49-Inch QD-OLED Gaming Monitor Hits Lowest Price. Anyone following the wider picture can start with LG UltraGear 52G930B Review: 52-Inch Curved Gaming Monitor. The same theme surfaces in Philips QD-OLED Monitor: 240Hz 4K Gaming With Ambilight, which takes a different angle.
What to Watch Next
As OLED technology matures, we can expect more manufacturers to release ultra-high-refresh OLED monitors. Keep an eye on reviews that test real-world response times and motion clarity, as well as long-term burn-in reports. Also, consider whether game developers will optimize for such high refresh rates—currently, only a handful of titles can consistently exceed 500 fps on high-end hardware. Context on how this played out before sits in MSI Unveils World's First Triple-Resolution QD-OLED Monitor.
FAQ
What is the price of the LG 27GX790B?
The LG 27GX790B is priced at €899, but it is currently available with a slight discount at €848.03.
Does the monitor support both AMD and Nvidia adaptive sync?
Yes, it supports AMD FreeSync Premium Pro and Nvidia G-Sync for tear-free gaming.
What is the difference between quality and performance mode?
In quality mode, the monitor runs at 540Hz with QHD resolution; in performance mode, it runs at 720Hz with HD resolution.
What ports does the LG 27GX790B have?
It includes HDMI 2.1, DisplayPort 2.1, and USB-C.