LG 45GX90SA-B

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.

Overall

#47 in

Ultrawide Monitors

according to Reddit Icon Reddit

Sentiment score63% positive
12
4
3
Last updated: Apr 19, 2026

Reddit Reviews

Reddit IconDirteeCanuck
5 months ago

I picked the exact same monitor and I am typing on it now. It's clear as a bell. I didn't want the stupid built in OS so this was better than last years model. I bought this for gaming and after watching a few reviews about the 5k2k not scaling well for lower resolutions I bought this because I can actually run games in the native resolution without upscaling. With the 5k2k I was planning on just scaling down to 3440x1400 anyways but happy I just bought it native. Super happy I did. It's basically a perfect match for my system (Ultra 265 + RTX 5070). I also got a smoking deal on this monitor. If offered a 5k2k for trade on this one to one, I don't know if I would even do it, I have the resolution I want with no scaling and 240hz native instead of 165hz.

Reddit IconSecure-Tradition793
3 months ago

I mained a GX9 45" for 2 months and a glossy 32" 4K QDOLED actually. LG's matte was fine, better than I expected in fact, but glossy was instantly more pleasant to watch all the time. I learned I'm tolerant of reflection too. I still returned both as 5K2K UW was amazing, so I'm back to an IPS for now.

Reddit IconSpinelli__
2 months ago

45GX90SA, easily. What do you mean by “slightly smaller screen size”? 45″ 21:9 is on a different level than 49″ 32:9 in overall image size and immersion. People keep not understanding this: * 27″ 16:9 → make it wider = 34″ 21:9 → make it even wider = 49″ 32:9 (the MSI) * 32″ 16:9 → make it wider = 39″ 21:9 → make it even wider = 57″ 32:9 (the Samsung) * 36-36.5" 16:9 → make it wider = 45″ 21:9 (the LGs) → make it even wider = 65.5″ 32:9 So, ya, 49″ 32:9 is literally just a super-ultrawide version of a 27″ monitor. You cannot compare that experience to a way bigger & immersive 45″ 21:9. **MSI** The image scale, height, and presence are still 27″-class, just extra wide. Plus, it’s only 144 Hz. 144 Hz is fine for fluidity and input lag but poor for motion clarity, regardless of LCD or OLED. Below around 200 Hz, sample-and-hold persistence blur dominates. **LGs** Main differences * 1440p @ 240 Hz * 2160p (4K-class ie. 5K2K) @ 165 Hz I’d take 1440p 240 Hz all day. 240 Hz absolutely destroys 165 Hz in motion clarity and, for gaming, 1440p is way easier to drive - even at 240 FPS - than 2160p at 165 FPS. DLDSR is the icing on the cake: * Massive improvement in sharpness & clean, "high res" look * Dramatically reduces aliasing & shimmering * Still keep 240 Hz Two DLDSR levels: * 2.25x (5120x2160) * 1.78x = 80ish % the image quality of 2.25x but less demanding **Samsung** Could have been great, but two issues: A. Not OLED B. Samsung’s terrible “fake curve” design Samsung (and brands using Samsung panels, likely probably that MSI) does not use a constant-radius curve. Instead, it’s more like: * Sucked-in / punched-in center * Flatter around the mid-sides * Outer thirds being basically flat Think of a flat piece of paper that's had it's center punched or sucked in rather than a simple, uniform arc from end-to-end. That causes: * Fisheye distortion * Perspective weirdness * Constantly feeling something is "off" or weird LG’s curve is a true, constant radius: * No sucked-in center * No suddenly flat edges * No distortions * No visual or perceptual weirdness

Reddit IconT_Diz
5 months ago

I currently have the 45 inch LG Ultra Gear 45GX90SA OLED. Amazing for gaming but not great for work with the low resolution compared to the size of the screen. I only got it because I got it used in excellent condition from Best Buy for $660, but I just got the Samsung G75K 40 inch off Samsung’s website for $617 with 2 years of Samsun Care+ included for $1. Go to their website and chat the live agent. It was listed for $750 when I first started and ended up paying $617. I think they accidentally gave me too many discounts, but you can at least get 5% off, and they’ll price match for next 15 days if they lower the price at all (via refund).

Reddit IconTdotsFinest82
5 months ago

Just grabbed this exact monitor on a Black Friday sale. It’s an incredible gaming and media consumption monitor. For my gaming PC (4080 laptop), this is the ideal resolution. During gaming, I can’t tell that the PPI is “only” 80ish. Games look incredible on here. That said, I wouldn’t do any actual work on this monitor. The text fringing and blurriness doesn’t bother me much, but I’m reading for 5-10mins at a time, max. If I had to work on this bad boy for 8hrs, I think it would be a problem. When I upgrade to a 5070ti desktop later on, I would consider the 5k2k one, but honestly, I think I’m set for the next 4-5 years with this one. It’s really great and I’d rather push higher frames at 1440p than lower frames at 4K. Edit: 4K not 2K

Reddit IconAlcoholicLimaBean
2 months ago

I have the 45” LG 5k2k and a RTX 5080. Upgraded from the 45” LG 3440x1440 and it was night and day for me.

Reddit IconASkillz82
10 months ago

I have 2 45" LG Ultrawides- the new 5K2K and last years 1440p. Both are outstanding. The additional height is a much more functional use of space vs. additional width.

10 months ago

Yeah, it's pretty noticeable if you have them side by side. The 1440p is an awesome monitor, but the PPI is pretty low. If it was a TV that you were sitting a bit further back from, I don't think it would be as noticeable, but up close, the extra pixels in the 5k2k make a noticeable difference.

10 months ago

Yes, but 4K @ 165hz is good enough for me. I can’t tell the difference between 165 & 330hz.

Rankings by Use Case

Top recommendations from others in the same boat

Other Reddit Recommendations: