I purchased the 27" variant when it was on special offer. These notes are in addition to the other reviews for the same monitor.I looked at the monitor and shipping box. There is no clue as to who manufactured this monitor for Amazon. I don't think it is AOC because of the joystick menu control and the design of the stand. The build quality is remarkably good. The stand does require a large foot print.The monitor is supplied with a 12v @ 3.7A power adapter with a standard 2.1mm barrel plug.The front of the screen is covered with a large protection film, and there are a further three 30mm wide strips protecting the sides of the plastic bezel. The feint dot matrix numerals reported by other buyers on the screen is actually printed on the protection film.I forgot to buy a Display Port cable, and so all testing was completed using HDMI cables. Windows 10 and the monitor both reported 165 Hz. I am using a MSI RTX 4060 Ventus gpu.I haven't noticed any backlight bleed around the edge of the screen as reported by another 27" owner in normal use.The computer is used in a dimly lit room. I had to lower the Brightness setting from 80 to 18, kept Contrast at 50, and changed Colour Space to Standard.Picture quality of Youtube and other 1080p videos look okay to me. I was worried about poor contrast and black crush with the IPS panel, but it is not as bad as I feared.I tried the testufo dot com test with 'Ghosting/Pursuit camera' setting. At 165 Hz, it looked very good. Far better than anything I'd seen on 32" LED TV I had been using and my other Benq 24" 60 Hz VA monitor.The built in speakers are not the best, but is usable. I connected a set of Creative Labs T10 speakers to the headphone jack socket to monitor.I'm no expert when it comes to games. I tried F1 24 on PC. At 60 fps with VSync enabled, the ghosting I was seeing on the VA TV screen is gone. At 120 fps in the game, 'wow' what a difference the higher refresh rate makes but it also maxes out the GPU using Ultra settings in 1080p, creating extra fan noise.Unlike F1 24, I observed with Euro Truck Simulator 2, the monitor's refresh rate does not match the game settings. eg. if I enable VSync and set the refresh rate to 60 Hz in the game, the monitor still reports 165 Hz (as set in Windows display properties). Tinkering with nvidia control panel doesn't make any difference. I read it may be attributed to the game using a very old graphics engine.I discovered that G-Sync with nvidia RTX gpu only works with DisplayPort 1.2 and HDMI 2.1. The monitor is only rated at HDMI 2.0. I'm currently awaiting delivery of a new DP cable to test VRR later.I briefly tested a PS4 Pro and observed the monitor is receiving a 4k video signal. I changed the PS4 to output 1080p and I think turned off HDR.Update:A pair of new DisplayPort cables 5 days later. Make sure the DP plug is pushed fully into the DP socket. The cables I purchased don't have the optional latch, so I didn't realise the plug wasn't fully inserted when I was wondering why the video signal sometimes disappeared.I was able to find and enable G-Sync in the nvdia control panel.For ETS2, when I disable VSync and enable the monitor's OSD to show the refresh rate on top right corner of the screen, I can see it fluctuating around '60'. Previously, it was fixed '165'. I no longer see screen tearing with VSync disabled.With F1 24, I am using DLSS Quality with FrameGen Enabled with maximum 120 fps in the game. I find I had to re-enable VSync in the nv control panel (It is set to Off within the sim) otherwise the motion is not smooth with signs of screen tearing. Update: Setting max frame rate in nvcp to 100 fps seems to fix the issue.I learned enabling VSync in nv control panel allows the monitor to 'fall back' on using VSync when monitor is operating outside the VRR range of GSync capability of the monitor.In Flight Simulator 2020, I've previously had to enable VSync to lock it to 60fps, otherwise the graphics stutters when panning the external camera 360 degrees. I can now disable VSync and set the maximum fps to 60 in the nvidia control app.