Cooler Master Tempest GP27U 27" 4K UHD 3840 x 2160 Quantum Dot MiniLED Gaming Monitor, HDR1000 Ready, FreeSync/G-Sync, 160Hz, 1ms Response, 98% DCI-P3, VESA Mounting Tilt & Swivel Adjustment,Black

First, the good. The monitor is bright. It will give you a true HDR experience only really surpassed by an OLED (which personally I'd never want to use as a monitor due to eventual burn in). The problems start when you start doing non-HDR content while in HDR mode. Which you wouldn't think would be a problem till you realize basically all your computer software is SDR. Not too many games, although more and more are, support it and most desktop software will only use SDR. SDR content is very washed out. Seems to be a saturation or gamma issue as you can mostly compensate by turning down the Black Adjustment setting, but that starts to dim the high end of the brightness scale fairly noticeably. If that was all, I could make due with enough calibration and other tweaking. However there are two problems I just can't ignore. First, half the time when setting my Refresh Rate to 160 Hz the monitor and my other two monitors just shut off and never recover. I have to hard restart my computer by holding the power button. Then like 50% it'll come back up at 60 Hz or at 160 Hz. And it'll just randomly boot in 60 Hz after having been set to 160 Hz. I also had one time where the Nvidia Control Panel could not detect Adaptive Sync Support. I didn't have these problems when just using 120 Hz or 144 Hz. The final nail in the coffin was the local dimming behavior on SDR content. It was almost like the local dimming logic inverted on SDR content. Watch and HDR video and it is near perfect, but just browsing the web and go on a site with Dark Mode and you see the issue right away. The easiest way to test is to show an image with like a 70% gray. If you mouse over the image you can see as a local dimming zone dims as the mouse passes through it. That's not how that works. The mouse is pure white, you should instead see a halo as the dimming zone is brighter than all the ones around it due to the mouse cursor. That is just unacceptable and the only way to "fix" it is disabling local dimming which ruins your blacks, which is kind of the point with HDR. Ultimately it is this last point that forced my hand to return the monitor. 4/5 for Gaming, only loses the 5th start due to the issue with 160 Hz 1/5 for Picture quality, would be 0 if I could, for the issues with SDR (for the desaturation and local dimming issue) 5/5 for Brightness, because it really does get BRIGHT The other

Excellent refresh rate, good resolution and colours. Very nice design with slim bezels, metal frame, usb hub, 60W usb c power delivery for laptops/MacBooks adjustable stand and of course RGB lighting. I also have the highly rated gigabyte M27Q and prefer this monitors performance and design but I do wish it had a KVM hub as is included on the gigabyte monitor.

I already knew the GP27U had some issues and still purchased it anyways, no regrets. It arrived a week early and in perfect condition. Out of the box: -No damage, no dead pixels, color calibration seems fine. (Saw some other reviews mention green/yellow hues but my monitor looks fine if it's referring to the GP27U) -HDR may seem like low brightness but you'll just need to go into your display options and drag the cursor to increase brightness. It now works with local dimming with the recent update. -Blooming, I haven't noticed it much due to the fact that I don't play/watch things in dark rooms. I'll find out soon and update when I get the chance. -4k 160hz with display port, works with Intel ARC A770. You can downsize the resolution but It's lowered to 120-144hz. -Cooler Master is constantly updating the firmware, major reason I still went with it is because I know we'll be able to get support for this product. Best monitor I've ever had for an all-in-one that works with just about anything, coming from a 24.5 inch monitor. (Office, Gaming, Media, Media Creation - Art) There's another monitor by INNOCN named 27M2V. It has all of the same specs but twice the dimming zones compared to the GP27U. I still opted for this one for a quality built monitor that doesn't feel like cheap plastic. The company is also working on firmware updates, I'm not sure how many companies would do that. That's it for now, will update for anything negative or positive that isn't already well known when the time comes.

I purchased a few 4k gaming monitors and this one clearly outshined the others. The HDR gaming picture is incredible and the colours are very bright. There were some firmware issues early on but those have all been resolved. There are issues with local dimming on HDR if you're working. I noticed heavy blooming using VS Code in dark mode. I use SDR mode for productivity, and HDR for gaming. I have a 27" Asus TUF 1080p gaming monitor I use as a second monitor and the text looks so grainy compared to how smooth the text is on this monitor your think the 1080 monitor had some kind of issue. IMO This is the best 27" 4k gaming monitor on the market right now.

Not a professional reviewer so I will just give my impressions. Positive: - Amazing price for what you get - Refresh rate is legit. Default mode is nice and smooth and does not require overdrive. - Saturated colors with wide gamut, but this is a bit of a negative too (see later) - Good contrast compared to other IPS monitors (looking at you LG) - Stand mostly metal with a nice finish. RGB is smooth - Extremely subtle branding on monitor front, nice and sleek - Thin beezel on all sides, nice modern look - Monitor sides (that you would touch to adjust) are smooth anodized aluminum, gives a really premium feel Negatives - Color gamut is wide but really not so accurate. Definite unpleasant red color cast, will take a lot of tweaking to render more neutral. Still better than crap non-wide monitor. - Monitor does NOT adjust low enough, bottom of monitor is 5-8 inches above desk (big deal for me) - Backlight uneven on sides, with vignetting. - Overdrive modes all have overshoot - I will try them some more and update review - OSD is painful to use - Stand foot is a little tall and extends out middle, kept hitting keyboard on it. - 2 dead pixels, unfortunately toward center This monitor has a nice physical build quality, great refresh and Freesync performance. Colors are nice and saturated but not accurate and backlight has unevenness and vignette. Stand does not lower enough. Overall a good effort, but needs some improvements to be really good. Panel is great and has a lot of potential. Version 2 of this monitor will likely be fantastic. But this one is going back.