---
product_id: 42244663
title: "Agon AG271UG 27” Gaming Monitor, G-SYNC, 4k/ UHD (3840x2160), IPS Panel, 60Hz, 4ms, Height Adjustable, DisplayPort, HDMI, USB"
brand: "aoc"
price: "¥519674"
currency: JPY
in_stock: false
reviews_count: 8
category: "Aoc"
url: https://www.desertcart.jp/products/42244663-agon-ag271ug-27-gaming-monitor-g-sync-4k-uhd-3840x2160
store_origin: JP
region: Japan
---

# 4ms Response Time G-SYNC Adaptive Sync 27" 4K UHD IPS Display Agon AG271UG 27” Gaming Monitor, G-SYNC, 4k/ UHD (3840x2160), IPS Panel, 60Hz, 4ms, Height Adjustable, DisplayPort, HDMI, USB

**Brand:** aoc
**Price:** ¥519674
**Availability:** ❌ Out of Stock

## Summary

> 🎮 Elevate Your Game with 4K Precision and G-SYNC Smoothness

## Quick Answers

- **What is this?** Agon AG271UG 27” Gaming Monitor, G-SYNC, 4k/ UHD (3840x2160), IPS Panel, 60Hz, 4ms, Height Adjustable, DisplayPort, HDMI, USB by aoc
- **How much does it cost?** ¥519674 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/42244663-agon-ag271ug-27-gaming-monitor-g-sync-4k-uhd-3840x2160)

## Best For

- aoc enthusiasts

## Why This Product

- Trusted aoc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Connectivity Hub:** Multiple ports including DisplayPort 1.2, HDMI 1.4, and four USB 3.0 ports (one with charging) keep all your devices plugged in and ready.
- • **Ergonomic Design for All-Day Comfort:** Height adjustable, pivot, and tilt features ensure your perfect viewing angle, reducing strain during marathon sessions.
- • **Crisp 4K Visuals for Ultimate Clarity:** Experience stunning 3840x2160 resolution on a vibrant 27-inch IPS panel that brings every detail to life.
- • **Smooth Gameplay with Lightning-Fast Response:** 4ms response time combined with G-SYNC compatibility eliminates screen tearing and lag for seamless gaming.
- • **Dynamic Contrast & Brightness for Immersive Viewing:** 300 cd/m² brightness and a staggering 20,000,000:1 dynamic contrast ratio deliver vivid colors and deep blacks.

## Overview

The AOC Agon AG271UG is a 27-inch 4K UHD gaming monitor featuring an IPS panel with 3840x2160 resolution, 60Hz refresh rate, and a rapid 4ms response time. Designed for serious gamers and professionals alike, it supports NVIDIA G-SYNC for tear-free visuals and offers extensive connectivity options including DisplayPort, HDMI, and USB 3.0 ports. Its ergonomic stand allows height adjustment, pivot, and tilt, ensuring comfort during long sessions. With 300 cd/m² brightness and a dynamic contrast ratio of 20,000,000:1, it delivers vibrant, immersive visuals perfect for gaming, content creation, and productivity.

## Description

AOC Agon AG271UG 27" 4K IPS Gaming Monitor, G-Sync, 3840 x 2160 Res, 300 cd/m2,60hz, 4ms,DP,HDMI,(4) USB, HA.

Review: Great 4K, Great Price - I built a gaming PC last May (GTX1080, 7700 processor, etc) and originally bought an LG ultrawide monitor. I was really new to all this and did a fair amount of research on PC components, but when it came to the monitor, I think I was so tired of research and didn’t want to spend a crazy amount of money. The LG ultrawide is cool, but it “stretches” some games, isn’t really supported by others, and definitely wasn’t taking advantage of my PC internals. I decided to shop around for some 4K monitors, and use the LG for music production. I was first looking at a Predator, but didn’t feel comfortable spending almost $700 when basically every other review was bashing their horrible QC problems. I found the AOC AGON AG271UG and it was right in the price range I wanted and had decent reviews. I was stuck between this being only 60hz or upgrading to a 144hz, but I don’t really play competitively so thought the extra cost may be unnessecary for my needs. I bought the AG271UG 27inch monitor with Prime and two days later it was at my door. Took it out, hooked it all up and started it up. I noticed split right down the screen, the left half of the monitor was red (picture 1) and could be seen when on the desktop (picture 2). I fiddled with the settings but didn’t help. It was very odd, it would cause blacks to be reds, but it was transparent so when I had Google Chrome open it would only show through the blacks. I restarted the monitor and it seemed to correct, but came back shortly after. I looked online and didn’t see any info about the problem. I’ll be honest, I was bummed because I read so many monitor reviews about garbage QC issues and knew I received a lemon. I contacted desertcart Support and sent it back the next day (super easy process). I debated about ordering the same monitor or if that was a “sign” to get something else. I decided to order it again and it was delivered the next day, super insanely fast shipping. I have been using it for two days and doesn’t seem to have any bleed, dead pixels, or any issues (picture 3). I’m still messing with the color settings, but I really like this monitor. 27 inch is the perfect size and I love how easy it is to adjust the viewing angle and height of the monitor. Using 4K mods in Fallout 4 and playing Divinity: Original Sin II, I can see all the colors really pop and see the difference from my old monitor. I also checked out some 4K videos on YouTube and they look spectacular. I’m also using the G-Sync since I have the Nvidia gtx 1080 and haven’t really had any issues game performance wise. The speakers aren’t that great and the monitor menu could be updated, but those aren’t things to cause too much fuss over. Overall, really happy with this monitor. If you’re looking for an entry 4K monitor and don’t want to break the bank, I would see definitely check this out. Sure it’s only 60hz, but for the price some sacrifices will be made. Sure my first monitor was messed up, but an easy return process and a insanely fast delivery of the second and everything is good! Bring on Far Cry 5!!!
Review: This monitor is soooooooooo much better than my previous monitor - This monitor is soooooooooo much better than my previous monitor. I absolutely love playing on it (and strangely, owning it). To start with, the build quality is amazing. The base is cool brushed metal and very substantial. When you adjust the height or the screen angle the feeling is smooth and solid. The casing feels like quality as well, and doesn’t “creak” when you move it or pick it up. The control buttons under the frame don’t jiggle around. I spent some good money on my PC because I game on it several hours per day, and this monitor does do my PC justice. Second, you can see that AOC built this monitor for gamers. In addition to all the gaming specs, the base is “V” shaped so you can angle your keyboard when you play, as I like to do. There is a scale on the back showing the exact height of the monitor so you can reproduce your exact setup. There’s a retractable headset holder, and inputs for your headset and mouse on the side of the monitor, if that’s your preferred set up. I do, because I bring my headset around with me a lot, and I hate to keep crawling under my desk to plug it in and unplug it all the time like I used to do. The most important thing about this monitor is of course the visual experience you have when you play. I play shooters and the response time and smoothness are all the best I’ve seen. CS:GO in 4k is mind-blowing, and getting 4k now means not needing to replace your monitor in 2 years. Make sure you use your display port input. I know there are other monitors with high-end gaming specs, but this just feels fast. It’s a G-Sync monitor that’s made to work with my GeForce gtx 1080 video card (make sure you have an Nvidia video card). Not once has the screen stuttered and I haven’t noticed any artifacting or tearing. I haven’t seen anything better in stores or at the shows I’ve been to. What would I change about the monitor? It was not cheap. Nope. But I guess you get what you pay for, and after all, you’ll be looking at the monitor for hours a day for years. To me it was definitely worth it. If you’re a serious gamer with an Nvidia graphics card, you really need to see this monitor before you make your decision.

## Features

- 27" IPS Panel, (4K)3840 x2160 Resolution, 60hz w/display port, 4ms response time
- Brightness - 300 cd/m2, Dynamic Contrast Ratio- 20,000,000:1, 16:9 Aspect Ratio
- Connectivity-Display Port 1.2, HDMI 1.4, (4) USB 3.0 (1x charging)
- G-Sync Compatible, Speakers, Audio line-in/Earphone out
- Wall Mountable, Height Adjustable and Pivot

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06X9SB8XC |
| Adaptive Sync | G-Sync |
| Additional Features | Adaptive Sync |
| Aspect Ratio | 16:9 |
| Best Sellers Rank | #964,074 in Electronics ( See Top 100 in Electronics ) #18,094 in Computer Monitors |
| Brand | AOC |
| Brightness | 300 cd/m² |
| Built-In Media | 27" Monitor, Audio cable, DP cable, HDMI cable, Power Adapter, Power Cord, Quick Start Guide, USB cable |
| Color | BLACK |
| Connectivity Technology | DisplayPort |
| Contrast Ratio | 20,000,000:1 |
| Customer Reviews | 3.9 out of 5 stars 20 Reviews |
| Display Resolution Maximum | 3840 x 2160 Pixels |
| Display Technology | LED |
| Display Type | LCD |
| Global Trade Identification Number | 00685417715787 |
| Hardware Connectivity | DisplayPort, HDMI, USB, USB 3.0 |
| Has Color Screen | Yes |
| Image Contrast Ratio | 20,000,000:1 |
| Item Type Name | AOC Agon AG271UG 27” 4K IPS Gaming Monitor, G-Sync, 3840 x 2160 Res, 300 cd/m2,100hz, 4ms,DP,HDMI,(4) USB, HA |
| Item Weight | 14.9 Pounds |
| Manufacturer | Envision Peripherals |
| Model Name | AG271UG |
| Model Number | AG271UG |
| Mounting Type | VESA Compatibility - Mountable: 100 x 100mm |
| Native Resolution | 3840x2160 |
| Number of Component Outputs | 2 |
| Picture Quality Enhancement Technology | Flicker Free, Low Blue Light |
| Refresh Rate | 60 Hz |
| Resolution | 4K UHD 2160p |
| Response Time | 4 Milliseconds |
| Screen Finish | Glossy |
| Screen Size | 27 Inches |
| Screen Surface Description | Glossy |
| Specific Uses For Product | personal, gaming, business |
| Total Number of HDMI Ports | 1 |
| Total USB 3.0 Ports | 4 |
| Total Usb Ports | 4 |
| UPC | 685417715787 |
| Viewing Angle | 170 Degrees |
| Warranty Description | 3 Year Parts and Labor |

## Product Details

- **Brand:** AOC
- **Screen Size:** 27 Inches
- **Resolution:** 4K UHD 2160p
- **Aspect Ratio:** 16:9
- **Screen Surface Description:** Glossy

## Images

![Agon AG271UG 27” Gaming Monitor, G-SYNC, 4k/ UHD (3840x2160), IPS Panel, 60Hz, 4ms, Height Adjustable, DisplayPort, HDMI, USB - Image 1](https://m.media-amazon.com/images/I/81BuQBzBjnL.jpg)

## Questions & Answers

**Q: Have they fixed the flickering issue?**
A: I bought one with a build date before August 17 and sent it back to AOC. They exchanged it for one with a build date in October. The flicker issue was better but not completely fixed. Still had minor flickering issue as well as a dead pixel right in the middle of the screen. Got an RMA from AOC and they agreed to a full refund, even though it was purchased from Microcenter. Good customer service from AOC.

**Q: Is the 100hz refresh rate the default or the overclocked rate? In comparison the x34 predator has a 60hz refresh but 100 overclock.**
A: Capable of 100hz without overclock. Default rate is 60hz.

**Q: I see that there are lights. are they rgb/programmable? can you turn them off?**
A: You can choose from Red, Blue or Green, but not rbg.  You can choose between 3 intensity levels or choose to turn off.  The 4 lit bars on the back of the monitor look amazing.  If it's against a wall, it acts like accent lighting.

**Q: what's the lever on top right corner for?**
A: It's a headphone stand.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great 4K, Great Price
*by J***E on March 25, 2018*

I built a gaming PC last May (GTX1080, 7700 processor, etc) and originally bought an LG ultrawide monitor. I was really new to all this and did a fair amount of research on PC components, but when it came to the monitor, I think I was so tired of research and didn’t want to spend a crazy amount of money. The LG ultrawide is cool, but it “stretches” some games, isn’t really supported by others, and definitely wasn’t taking advantage of my PC internals. I decided to shop around for some 4K monitors, and use the LG for music production. I was first looking at a Predator, but didn’t feel comfortable spending almost $700 when basically every other review was bashing their horrible QC problems. I found the AOC AGON AG271UG and it was right in the price range I wanted and had decent reviews. I was stuck between this being only 60hz or upgrading to a 144hz, but I don’t really play competitively so thought the extra cost may be unnessecary for my needs. I bought the AG271UG 27inch monitor with Prime and two days later it was at my door. Took it out, hooked it all up and started it up. I noticed split right down the screen, the left half of the monitor was red (picture 1) and could be seen when on the desktop (picture 2). I fiddled with the settings but didn’t help. It was very odd, it would cause blacks to be reds, but it was transparent so when I had Google Chrome open it would only show through the blacks. I restarted the monitor and it seemed to correct, but came back shortly after. I looked online and didn’t see any info about the problem. I’ll be honest, I was bummed because I read so many monitor reviews about garbage QC issues and knew I received a lemon. I contacted Amazon Support and sent it back the next day (super easy process). I debated about ordering the same monitor or if that was a “sign” to get something else. I decided to order it again and it was delivered the next day, super insanely fast shipping. I have been using it for two days and doesn’t seem to have any bleed, dead pixels, or any issues (picture 3). I’m still messing with the color settings, but I really like this monitor. 27 inch is the perfect size and I love how easy it is to adjust the viewing angle and height of the monitor. Using 4K mods in Fallout 4 and playing Divinity: Original Sin II, I can see all the colors really pop and see the difference from my old monitor. I also checked out some 4K videos on YouTube and they look spectacular. I’m also using the G-Sync since I have the Nvidia gtx 1080 and haven’t really had any issues game performance wise. The speakers aren’t that great and the monitor menu could be updated, but those aren’t things to cause too much fuss over. Overall, really happy with this monitor. If you’re looking for an entry 4K monitor and don’t want to break the bank, I would see definitely check this out. Sure it’s only 60hz, but for the price some sacrifices will be made. Sure my first monitor was messed up, but an easy return process and a insanely fast delivery of the second and everything is good! Bring on Far Cry 5!!!

### ⭐⭐⭐⭐⭐ This monitor is soooooooooo much better than my previous monitor
*by A***R on September 26, 2017*

This monitor is soooooooooo much better than my previous monitor. I absolutely love playing on it (and strangely, owning it). To start with, the build quality is amazing. The base is cool brushed metal and very substantial. When you adjust the height or the screen angle the feeling is smooth and solid. The casing feels like quality as well, and doesn’t “creak” when you move it or pick it up. The control buttons under the frame don’t jiggle around. I spent some good money on my PC because I game on it several hours per day, and this monitor does do my PC justice. Second, you can see that AOC built this monitor for gamers. In addition to all the gaming specs, the base is “V” shaped so you can angle your keyboard when you play, as I like to do. There is a scale on the back showing the exact height of the monitor so you can reproduce your exact setup. There’s a retractable headset holder, and inputs for your headset and mouse on the side of the monitor, if that’s your preferred set up. I do, because I bring my headset around with me a lot, and I hate to keep crawling under my desk to plug it in and unplug it all the time like I used to do. The most important thing about this monitor is of course the visual experience you have when you play. I play shooters and the response time and smoothness are all the best I’ve seen. CS:GO in 4k is mind-blowing, and getting 4k now means not needing to replace your monitor in 2 years. Make sure you use your display port input. I know there are other monitors with high-end gaming specs, but this just feels fast. It’s a G-Sync monitor that’s made to work with my GeForce gtx 1080 video card (make sure you have an Nvidia video card). Not once has the screen stuttered and I haven’t noticed any artifacting or tearing. I haven’t seen anything better in stores or at the shows I’ve been to. What would I change about the monitor? It was not cheap. Nope. But I guess you get what you pay for, and after all, you’ll be looking at the monitor for hours a day for years. To me it was definitely worth it. If you’re a serious gamer with an Nvidia graphics card, you really need to see this monitor before you make your decision.

### ⭐⭐⭐ A good monitor if you win the panel lottery.
*by B***L on May 23, 2018*

At first I thought I had won the panel lottery. But two months later there were horizontal lines about 10 pixels apart going up the right side of the monitor. After I got a replacement, the fun began. I had a panel with about 3 groups of dead pixels. I returned it with no issue. The third monitor had the same issue. Dead pixels. I don't know if I am being pedantic, but I believe there should be no dead pixels. Support even said that their panel warranty covered the issue, but they would not send me a fourth monitor. If you value your time, want all your pixels and a functional monitor, look for a company that has your back and wants you to be satisfied. If you have time to play the panel lottery, this one's for you. Apparently you only get three tries.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-15*