This 144Hz FreeSync gaming monitor from LG is on sale for $450 right now
It's $50 off, and is officially compatible with Nvidia G-Sync, too.

Are you looking for a new gaming monitor? Maybe one that works great with both Nvidia and AMD graphics cards? If so, you should check out the LG 27GL850-B, because it just dropped $50 below its usual price of $500.
This monitor has a 27-inch 2560x1440 IPS display panel capable of refresh rates up to 144Hz, which checks all the boxes we like to see checked. It's a FreeSync monitor, but Nvidia has officially certified it as G-Sync compatible, so its variable refresh rate feature will work with Nvidia graphics cards as well as AMD GPUs.
Other features of the monitor include thin bezels, a display with 98 percent coverage of the DCI-P3 color space (for accurate colors), HDR10 compatibility, and a stand that can tilt and pivot. Not bad for under $500.
LG 27GL850-B 27 Inch Monitor | $449.99 (save $50)
This monitor works great with both G-Sync and FreeSync, and it's $50 below the usual price.
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Corbin is a tech journalist, software developer, and longtime PC Gamer freelance writer, currently based in North Carolina. He now focuses on the world of Android as a full-time writer at XDA-Developers. He plays a lot of Planet Coaster and Fallout and hosts a podcast all about forgotten stories from tech history.