LG Ultragear™ 45GX90SA 45-inch OLED 240Hz 0.03ms WQHD Curved Smart Gaming Monitor webOS(Xbox, Netflix Built in) / USB-C PD 65W / HDMI 2.1 / NVIDIA® G-SYNC® / AMD FreeSync™ Premium
Bottom line: The LG Ultragear™ 45GX90SA 45-inch OLED 240Hz 0.03ms WQHD Curved Smart is a specs-and-price decision rather than a crowd-consensus one in the gaming monitors category. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.
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Before you buy
- 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
SpecPicks Verdict
SpecPicks scored LG Ultragear™ 45GX90SA 45-inch OLED 240Hz 0.03ms WQHD Curved Smart… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. 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
- OLED Smart Gaming Speed: Experience next-level responsiveness with a 240Hz refresh rate and ultra-fast 0.03ms (GtG) response time for ultra-smooth, low-latency gaming.
- Curved Immersion (800R): Get pulled into the game with a steep 800R curved 45” OLED screen that enhances field of view and makes every scene more intense and lifelike.
- Ultimate Sync Compatibility: Enjoy ultra-smooth visuals without tearing or stutter thanks to AMD FreeSync Premium and NVIDIA G-SYNC compatibility.
- Smart Entertainment & Cloud Gaming: Stream Netflix, Prime Video, and Disney+ via webOS, and play directly from cloud services like GeForce NOW, Amazon Luna, and Blacknut.
- Bright, Vivid, True Black: OLED panel with 98.5% DCI-P3 color, HDR True Black 400, and 1.5M:1 contrast for deep blacks, brilliant highlights, and cinematic color quality.
Full Specifications
| Brand | LG |
|---|---|
| Color | White |
| Shape | Curved |
| Brightness | 275 candela_per_square_meter |
| Model Name | FBALG45GX90SAB |
| Resolution | QHD Wide 1440p |
| Unit Count | 1 Count |
| Color Gamut | 98.5 |
| Pixel Pitch | 0.3 |
| Screen Size | 44.5 inches |
| Aspect Ratio | 21:9 |
| Connectivity | USB-C |
| Display Type | OLED |
| Model Number | 45GX90SA-B |
| Refresh Rate | 240 hertz |
| Adaptive Sync | FreeSync Premium, G-Sync Compatible |
| Compatibility | Xbox |
| Mounting Type | Wall Mount |
| Response Time | 0.03 milliseconds |
| Screen Finish | Matte |
Ready to buy?
LG Ultragear™ 45GX90SA 45-inch OLED 240Hz 0.03ms WQHD Curved Smart Gaming Monitor webOS(Xbox, Netflix Built in) / USB-C PD 65W / HDMI 2.1 / NVIDIA® G-SYNC® / AMD FreeSync™ Premium 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.
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