Link: https://www.corsair.com/us/en/p/monitors/cm-9030002-na/xeneon-27qhd240-27-inch-oled-2560x14400-240hz-gaming-display-cm-9030002-na

Preface: Bought this monitor ~1 week ago.

PC Spec:

• CPU: 7800x3D
• GPU: RTX 4090 FE

Main usage: Gaming + Productivity (Programming)

Before purchasing:
I was cross shopping between this, the LG OLED 240hz, and the Asus with the same panel.

The LG one was said to be too low on brightness, but what turned me off was the warranty. 1 year only, and doesn't cover burn in.

The Asus one was promising with it's brightness, but it's been reported to have way too many issues with burn in and retention issues starting at the 2 week mark of ownership.

I landed on this monitor because of the warranty, and it was being sold at Best Buy so I can test it and return it if it had too many issues.

Calibration:
Preset: Standard
Brightness: 100
Contrast: 50
Sharpness: 7
Color Temperature: Custom 100 RGB
Gamma: 2.2
Saturation: 3
(Thanks to ishpaddles on Corsair Discord)

Review:
I'm going to review this based on the main concerns most people have with OLED:

• Warranty: 3 year, and it covers burn in as explicitly stated here.
• Brightness: I leave this monitor in SDR, standard custom setting, and don't turn on uniform brightness. It's PLENTY bright, as bright as my older 240hz 1080p IPS monitor which was 400 nits. It's more than enough for me while playing CS:GO or CyberPunk.
• HDR: This is REALLY bad. It's washed out and doesn't work too well with games honestly. I enjoy the standard custom calibration much better.

Overall, I'm really happy I purchased this monitor. The blacks are really deep, the brightness is plenty for me, when coding with a black theme on say Intellij, the text looks really good. I haven't encountered much text fringing to be honest. I do notice the brightness change issue where one area is bright then goes a bit darker because of a change of scenary. It only happened twice in CSGO though, and it didn't bug me much.

I think this is the best there is for the mean time for someone who has a 4090, especially if you need high FPS.

The responsiveness of this monitor is really quick too as already indicated by reviews. I'm enjoying that when playing CSGO, and I say that coming in from another 240hz monitor.

I'm actually enjoying playing CyberPunk all over again because of it, the graphics are something else.

The menu is easy to use, and I actually really like the sensor on the bottom to notice your hand and the menu shows up. The back panel is nice to have, with all the USB options.

Highly recommend it over the other two. Hope this helps!