LG LG UltraGear OLED 27GX790A-B
Monitors

LG

LG 27GX790A-B Reddit Verdict: Great Speed, Real Compromises

Mar 2026

Last Analyzed

7/10

Overall Rating

23

Positive Reviews

18

Negative Reviews

Summary

The LG UltraGear 27GX790A-B is a 27" 1440p WOLED monitor with a 480Hz refresh rate aimed squarely at competitive FPS gamers. Reddit users coming from IPS or TN panels consistently describe the upgrade as transformative — the motion clarity and OLED blacks are a genuine step up. However, the monitor draws recurring criticism for its heavy matte anti-glare coating, which many describe as grainy and color-dulling, making it a weaker choice for those who care about picture quality or use it for work alongside gaming. It sits at an interesting price point, often discounted well below competing QD-OLED and newer tandem OLED panels, which is its strongest argument. Users who demand the best visual fidelity frequently compare it unfavorably to glossy alternatives and sometimes return it, while those who prioritize frame rate performance tend to keep it without regret.

Pros

  • 480Hz delivers the best motion clarity available in its price range — competitive gamers report it feels noticeably smoother than 240Hz OLED alternatives, even when not fully utilizing the refresh rate
  • Frequently discounted to $650–790 USD, making it the cheapest 480Hz OLED on the market — often cheaper than 360Hz QD-OLED models from competing brands
  • OLED response times and black levels are a significant leap from IPS and TN panels; users upgrading from 144Hz IPS describe it as 'a completely new game'
  • G-Sync certified with adaptive sync support rated down to 20Hz, giving flexible VRR range for varying frame rates
  • Long-term durability holds up well for competitive gaming workloads — users with 3–6 months of use report no burn-in issues under typical FPS gaming patterns
  • Works well as a future-proof investment — the monitor's lifespan typically outlasts a PC build, so 480Hz has runway even if current hardware can't fully exploit it

Cons

  • The matte anti-glare coating is a consistent complaint — multiple users describe it as 'grainy' and 'dirty-looking,' and some returned the monitor specifically because it made text clarity unacceptable for mixed work/gaming use
  • Near-black performance is problematic out of the box: black crush, color banding in dark scenes, and poor grey uniformity are reported by several users and don't fully resolve after pixel refreshes
  • HDR implementation is underwhelming — colors appear washed out with HDR enabled by default, requiring driver tweaks or Windows reinstalls to resolve for some users
  • Uses older WOLED panel technology vs. newer QD-OLED and tandem OLED options; noticeably lower SDR brightness (~220 nits) and less saturated colors compared to QD-OLED rivals like the MSI MAG 272QP
  • Alt-tab to full-screen causes a black screen flash — a known issue with no official fix, requiring workarounds like borderless windowed mode
  • The real-world advantage of 480Hz over 240Hz OLED is debated even among owners — the perceptual difference is smaller than the spec gap suggests, and most competitive players won't consistently hit 480fps at 1440p

The Matte Coating Problem No One Warns You About

Multiple buyers returned the 27GX790A-B not because of performance, but because the anti-glare coating made text look grainy and colors appear dull. If you split time between gaming and productivity, this coating is a dealbreaker that reviews consistently underweight.

Best Value 480Hz OLED — If You Can Live With the Trade-offs

At $650–790 USD on sale, nothing else offers 480Hz OLED at this price. The catch is you're getting 3rd-gen WOLED rather than newer QD-OLED or tandem panels, with noticeably lower brightness and color volume. It's a spec-per-dollar winner that still makes real compromises.

How Much Does 480Hz Actually Matter Coming From 240Hz OLED?

Owners who switched from 240Hz OLED to the 27GX790A-B report the difference is real but subtle — more of a visual polish than a competitive game-changer. The bigger leap is OLED vs IPS, not 480 vs 240Hz. That context matters a lot when deciding if the premium is justified.

User Reviews (41 of 138 analyzed)

6
0
tup1tsa_1337r/OLED_Gaming13d agonegative

Why would you want VRR with such high frame rate? You won't notice any stutter at high Hz but you will notice VRR flicker.

View Original Comment
6
0
Born-Product2878r/bapcsalescanada13d agonegative

I have this monitor. Not real difference in performance going from 240hz OLED or 360hz OLED to 480hz OLED.

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6
0
brandon_gbr/bapcsalescanada13d agopositive

480 is a noticeable improvement from 240. If you play mostly esports titles it's worth considering.

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6
0
batvinisr/OLED_Gaming13d agonegative

Motion clarity is perfect but for picture quality expecting from OLED — not so much. It's quite dull with a heavy grainy matte coating. It's like they purposely sabotage their monitors with stupid decisions and that applies basically to every OLED monitor out there.

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5
0
hardXfulr/OLED_Gaming13d agopositive

Your monitor will probably outlast your PC, so once you upgrade but still use the same monitor, it will be even better. If you have the money, why not.

View Original Comment
5
0
lolilolipolir/OLED_Gaming13d agopositive

I also have the same monitor and turning down the sharpness by 10 on the monitor OSD fixed it for me. Text clarity was not an issue in contrast to what people say about OLED text fringing for some reason.

View Original Comment
5
0
Croakie89r/OLED_Gaming13d agonegative

Tried the same monitor and returned it, got a xg27ucdm. Matte screens just make everything look dirty to me, or grainy, makes text hard to read. My current screen has been infinitely better.

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5
0
Traditional-Ad-8039r/Monitors13d agopositive

I want the ASUS but the LG is 455$ cheaper so I feel like the LG should be a no brainer.

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4
0
FoundationOpening513r/OLED_Gaming13d agopositive

My LG GX790A-B literally arrived today. I got a really good deal at £585 pounds after discounts and cashback, this made it way cheaper than other 480hz monitors and about the same price as a 240Hz OLED so why not??? Future proof. I still play old competitive FPS titles like COD4 where I get 800 FPS average, so going to 1440p would be even more fps.

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4
0
broimsusr/OLED_Gaming13d agonegative

Going from 240Hz to 480Hz is more of a visual experience improvement than any meaningful difference in competitive titles. The average human reaction time is probably ~300 times the difference between a 240Hz and 480Hz OLED response time and frame time differences.

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3
0
Sgt_Dbag2r/OLED_Gaming13d agopositive

100%. If you've never had OLED, 240Hz on an OLED is similar to like 360 or 480 on an IPS. It is like this because of the superior motion handling of OLED technology. You need less Hz with OLED to get the same visual experience as much higher Hz with regular IPS or VA or TN panels.

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3
0
techraitor/OLED_Gaming13d agopositive

The colors being washed out might be because of Windows. You're gonna want to right click on your desktop > Display > Color profiles and DISABLE the automatic color management. This brought back all the colors in my LG 32 for SDR.

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3
0
Discorzr/OLED_Gaming13d agonegative

Just received mine the other day and I must warn about the near black performance. It can't display very dark shades properly, so you get a horrendous black crush and banding. And there's nothing you can do to fix it. It's my first OLED monitor, and first I've returned ever. And I've owned MANY LCDs before. Even the cheap 100€ ones didn't have these issues.

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3
0
Slow-Managementr/OLED_Gaming13d agonegative

I just got mine and notice the same things — the near black banding and crush. God, I never felt so sad for about buying something. Will use for 2 days and start the returning process sadly.

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3
0
Born-Product2878br/bapcsalescanada13d agonegative

Yes, brightness on the OLEDs is mediocre. Max brightness is around 220 nits or something. And yes it is a bit grainy. My Alienware 360hz OLED didn't look this way. You get used to it.

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3
0
ShiftDexr/Monitors13d agopositive

I have had the LG 27gx790a-b for a couple of months now and I can tell you that if you can get it at a great price in your region go for it, it's a good monitor. BUT if the Asus PG27aqdp is at a similar price point or maybe a bit over but still in your budget, go for that one. My mate has it and whenever I go to his house I regret that I didn't pay more for my monitor.

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2
0
Sgt_Dbagr/OLED_Gaming13d agonegative

Above 240 FPS in those esports titles is diminishing returns. Personally, I am an advocate for saving money whenever possibly, even when you have money to spend. So why spend a ton more on 480Hz when 240Hz (or 360Hz for a lot of the popular QD-OLED 1440p monitors) is plenty for you and you keep more money in your pocket?

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2
0
kuzanzr/OLED_Gaming13d agopositive

Im currently using the monitor coming from 240hz IPS and have tried using 240hz OLED — YOU WILL notice the difference, the smoothness of your game is going to be super different with 240hz even an OLED. It's from my experience but for me its a huge upgrade, even my game can't handle 400-480 and only hovers around that range.

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2
0
MuhGnur/OLED_Gaming13d agopositive

It is great, just be sure to disable VRR. Unnecessary at that framerate and causes flicker. Otherwise the monitor is splendid.

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2
0
LetterheadOk6305r/OLED_Gaming13d agonegative

Bought mine awhile ago and could not get to know why I get those weird artifacts in dark scenes and I thought it was the games issue or the HDR content I was watching or my calibration — but man its annoying. If I play games and look at slightly dark areas the monitor tries to make it visible and it becomes weird or oversaturated.

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2
0
DonkieLoLr/OLED_Gaming13d agopositive

I just got it, after using the 240hz OLED version since it launched. I feel like the 480hz looks much sharper, similar colors and there's a brightness setting on the OSD that makes it even brighter than my 240hz. To me it looks perfect/great.

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2
0
NailCompetitive9069r/OLED_Gaming13d agopositive

Set refresh rate to 480Hz via DisplayPort, response time to Fast, Black Stabilizer around 50-60 to improve visibility in dark areas, and brightness around 50-70. These are solid starting settings for FPS gaming.

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2
0
raphaelbezar/OLED_Gaming13d agopositive

If you play competitive games, go for it. Otherwise, I suggest you wait for the tandem OLED.

View Original Comment
2
0
Remote-Law-6055br/OLED_Gaming13d agonegative

I have a 4k 240hz and a 1440p 500hz. I prefer the 4k 240 over the 1440p 500. I just like the option of higher refresh or lower resolution with demanding or horribly optimized games. The picture quality is definitely better on the 32" 4k than the 27" 1440p.

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1
0
D-Rock986r/OLED_Gaming13d agonegative

Returned mine, too grainy for me. Believe what others say about the matte finish.

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1
0
Remote-Law-6055r/OLED_Gaming13d agonegative

Had to return mine. The text clarity was terrible and the graininess from the anti-glare coating was too much. I use for work and gaming and it was terrible for work. I replaced with the MAG 272QP QD-OLED X50 which is far better clarity plus 20hz.

View Original Comment
1
0
Technova_SgrAr/OLED_Gaming13d agopositive

Love mine. I don't find the text at all blurry either (it uses an RWGB subpixel layout). Rtings lists it as the best high refresh OLED. LG tends to be aggressive when it comes to discounts on their displays that have been out for awhile.

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1
0
Technova_SgrA2r/OLED_Gaming13d agopositive

It's a wonderful panel with no issues. Rtings lists it as the best high refresh OLED. The only reason to avoid it is if you don't like a semi matte screen.

View Original Comment
1
0
marinh0wr/Monitors13d agopositive

The ASUS is way more expensive here. I think the LG is the endgame for me. All its weak points only show when comparing to more expensive monitors in my region so I'm really happy with my purchase. I didn't have any VRR flicker yet.

View Original Comment
1
0
ProfessionTiny353r/OLED_Gaming13d agopositive

I have been using for only 3 months, but so far so good. Very happy about image quality, high refresh rate and motion clarity is great coming from 144Hz 24" 1080p — it's a big leap. Using it for competitive gaming, it feels much much smoother than 144Hz.

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1
0
Tasty_Elderberry4210r/OLED_Gaming13d agonegative

I had to send it back because of heat issues but the image was also really sad after all I've heard online about how great OLED is.

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1
0
frossidaxdr/OLED13d agonegative

When I enable HDR the colors look extremely washed. It's as if enabling HDR does the exact opposite of what I know HDR should do. With SDR, details such as clouds in front of the sun are easily distinguishable. With HDR, it turns into a white blob. I reinstalled Windows and it completely fixed it — then I installed a newer nvidia driver and the issue came back.

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1
0
_Chopsticcr/OLED_Gaming13d agonegative

All the profiles and settings have a bad calibration. The image is absurdly punchy. Gamma, contrast, colors are not flat at all. Spending 200 bucks on a colorimeter might be necessary in this case, though it might not fix the auto dark scene brightness enhancer.

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1
0
Epox913r/OLED_Gaming13d agonegative

I ended up returning both HDR models because HDR didn't look right on either of them.

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1
0
Cute_Individual_5548r/OLED_Gaming13d agopositive

Sounds like you won the shitty panel lottery, unfortunately. Mine has none of the issues you've mentioned, but I wouldn't want to keep something I'm unhappy with either.

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1
0
Inerthalr/OLED_Gaming13d agopositive

My monitor only reaches 450 nits in the Windows calibration tool but in reality it does 1100 in small highlights. The only way to get to the advertised peak brightness in the calibration screen is by setting the contrast to 37 out of 100 instead of the default 53 for Peak 1000 mode.

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1
0
cocoafartr/OLED_Gaming13d agopositive

This is a good deal. 480hz is already pushing the limit of human perception. You'd get more benefit to motion clarity from features like gsync than just dumping higher framerate. This is G-sync certified, it's better than just an adaptive sync panel.

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1
0
Majestic-Trust-5036r/OLED_Gaming13d agopositive

At a point of a good 240hz monitor you won't see much skill improvement because the monitor is already so good that it doesn't make much of a difference anymore. Very high refresh rate has its place, especially for very fast paced motion in FPS and it brings a benefit even beyond 240hz. It certainly does more for the enjoyment of gaming than for skill but that's a good thing.

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1
0
PromotionGood8176r/OLED_Gaming13d agopositive

If you really struggle with brightness you can go in Windows HDR settings and just turn up the SDR brightness slider — it helps a lot. I was able to leave peak brightness on low and around 70% brightness overall. The downside is if you stream your display on Discord people will see a blown out white picture.

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1
0
JaykopXr/Monitors13d agopositive

I'm currently looking for a 27" 1440p highest refresh rate and both the PG27aqdp and 27gx790a-b are on my list. I really dislike the monitor stand of the ASUS one and I read that the panel is from LG on both monitors anyway. I feel like the price gap is just because of the branding.

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0
0
Some-Rice4196r/OLED_Gaming13d agonegative

That's probably overbuying if you just play single player games. I'd go for a 240hz model. Tandem is nice to wait for if you're looking forward to the pixel layout improvements for text clarity and burn-in. For gaming, it's not as significant a generational advancement.

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