Appliances Presidents’ Day SaleEnds 2/25. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product SearchGo to Footer
Main Content
product image

AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black

Rating 4.3 out of 5 stars with 105 reviews

25 Answered Questions
$199.99
$299.99
Only at Best Buy

AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black

Model: Q27G40XMN
SKU: 6617199
$199.99
Save $100
Comp. Value: $299.99
or
Finance OptionsView your offers
Special OffersOn related products
Standard Geek Squad Protection
94% of reviewers would recommend
Warranty Protection Plans
Availability
Fulfillment OptionsPickup selected
Available for pickup today at a nearby store
Order now for pickup on Thu, Feb 26 at
Act fast - Only 1 left at nearby store!
Sold by Best Buy

Highlights

  • Key Specs
    • Refresh Rate: 180Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
    • Maximum Resolution: 2560 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
    • Response Time: 1 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
    • Panel Type: VA (Technology that affects response time and image quality.)
    • Synchronization Technology: G-SYNC Compatible (NVIDIA Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
    • Screen Size: 27 inches (Size of the screen, measured diagonally from corner to corner.)
    • Display Connector(s): 1 x DisplayPort 1.4, 1 x HDMI 2.0 (The number and type of connectors used to connect to an external display.)
  • General
    • Brand: AOC
    • Model Number: Q27G40XMN
    • Product Name: 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor
    • Color: Black
    • Operating System Compatibility: Windows, Mac, Linux
  • Display
    • Refresh Rate: 180Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
    • Maximum Resolution: 2560 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
    • Native Resolution: 2560 x 1440 (Native resolution of a screen refers to its single, fixed resolution. Sometimes screens must scale an image up or down in order to fit the native resolution. This can cause a loss of resolution or detail.)
    • Contrast Ratio: 1200:1 (Measured difference between a displayed image's brightest whites and darkest blacks. The larger the first number, the more detail and color that can be displayed.)
    • Response Time: 1 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
    • Display Type: LED
    • Panel Type: VA (Technology that affects response time and image quality.)
    • Synchronization Technology: G-SYNC Compatible (NVIDIA Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
    • Aspect Ratio: 16:9 (The measurement of the width of a screen compared to the height of a screen, expressed as a ratio.)
    • Curved Screen: false
    • Brightness: 450 candela per square meter (A measure of the total light output.)
    • Screen Size: 27 inches (Size of the screen, measured diagonally from corner to corner.)
    • High Dynamic Range (HDR): false (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
    • Horizontal Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from either side.)
    • Vertical Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from above or below.)
    • Touch Screen: false (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
    • On-Screen Display Languages: English, French, Czech, Russian, German, Chinese, Spanish, Portuguese, Italian, Dutch, Swedish, French, Finnish, 5 additional (The available language options for displayed text.)
    • Display Surface: Anti-glare
  • Connectivity
    • Number of DisplayPort Inputs (Total): 1
    • Number of HDMI Inputs (Total): 1
    • Number of VGA Ports: 0 (VGA (Video Graphics Adapter or Video Graphics Array) is a display standard that transmits via analog signals. This type of interface is typically used to connect a computer to a display device such as a monitor, projector, or TV.)
    • Number of DVI Inputs: 0 (The number of digital cables carrying analog (VGA) video signals that can be connected to the product.)
    • Number of Mini DisplayPort Inputs: 0
    • Number of Thunderbolt Ports (Total): 0
    • Display Connector(s): 1 x DisplayPort 1.4, 1 x HDMI 2.0 (The number and type of connectors used to connect to an external display.)
    • Headphone Jack: true (The device features an interface that allows for the connection of headphones.)
  • Compatibility
    • Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
    • VESA Wall Mount Standard: 100mm x 100mm (VESA wall mount standards refer to the spacing of screw holes built into a TV in order to fit with standard TV wall mounts. These standards are implemented into most TVs and monitors.)
    • Voice Assistant Built-in: No (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
  • Features
    • Tiltable: true
    • Adjustable Stand Height: false
    • Anti-Glare: true (Product has features, such as a matte finish, that reduce the likelihood for screen glare.)
    • Eye Relief Features: Flicker free
    • Built-In Webcam: false
    • Integrated Speaker(s): false
  • Dimensions
    • Product Height With Stand: 18.9 inches
    • Product Height Without Stand: 14.44 inches
    • Product Width: 24.2 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth (With Stand): 7.6 inches
    • Product Depth Without Stand: 2.36 inches
    • Product Weight: 14 pounds (The out of box weight of the item.)
    • Stand Included: true
  • Power
    • Power Consumption: 37 watts
    • Power Saving/Off Mode: 0.5 watts (This mode will turn the display and/or the device off, or into a standby mode, after a preset length of time with no activity to conserve power.)
  • Certifications Listings & Approvals
    • ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
    • EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
  • Warranty
    • Warranty - Parts: 3 years
    • Warranty - Labor: 3 years
  • Other
    • UPC: 685417739684

Witness stunning visuals with AOC Q27G40XMN, 27" Mini-LED backlight technology, delivering deeper blacks, brighter whites, and more vibrant colors.

  • Mini-LED panel technology: Experience clarity, vibrant colors, and richer contrast with Mini-LED technology.
  • Quad HD Resolution: Experience stunning clarity and immersive detail with Quad HD (QHD) resolution. At 2560x1440, QHD strikes the perfect balance between Full HD and 4K, offering sharper visuals and smoother gameplay without straining your system. Enjoy crisper textures, enhanced depth, and a wider field of view—giving you a visual and competitive edge.
  • 180Hz Refresh Rate: Enjoy a smooth and responsive gaming experience with a lightning-fast 180Hz refresh rate, 1ms response time.
  • Blazing fast 0.5ms pixel response time: In gaming, every millisecond counts and can be the differentiator between hitting or missing a shot. Fast response time also eliminates ghosting and motion blur.
  • Ultra smooth gameplay with Adaptive Sync: Virtually eliminates stuttering, tearing, and judder by matching your' monitor's frame rate with that of your GPU. Also useful for watching media.
  • Breathtaking HDR realism with VESA CERTIFIED HDR1000: VESA HDR certification ensures ultra-bright highlights, deep contrast, and vibrant, true-to-life colors for a more immersive experience. Whether you're navigating dark dungeons or sunlit battlefields, HDR1000 delivers stunning visual depth and detail—bringing every moment to life like never before.
  • Re-Spawn 3-Year Warranty: Enjoy peace of mind with an industry leading Re-Spawn warranty that inclludes 3-year dead pixel coverage, 3-year advance placement coverage, and 1-year, one-time accidental damage replacement.
  • G-Menu customization: AOC G-Menu is a free tool that you can install on your PC to have complete customization paired with maximum convenience.
Whats Included
  • 27" Monitor with Stand
  • Power cord
  • HDMI Cable
Product Manuals

Q: What is the response time of this monitor?

A: The response time of the monitor is 1ms GTG (Grey-to-Grey).

Q: Is this monitor compatible with G-Sync?

A: Yes, this monitor is compatible with G-Sync through NVIDIA Adaptive Sync.

Q: What type of backlight technology does this monitor use?

A: This monitor uses Mini-LED backlight technology.

Q: What is the resolution of this monitor?

A: The monitor has a QHD resolution of 2560 x 1440.

Q: Does this monitor have a high refresh rate?

A: Yes, the monitor has a refresh rate of 180Hz.

Q: How long is the warranty on this monitor?

A: This monitor comes with a Re-Spawn 3-year warranty, including a year of accidental damage replacement.

Q: Does this monitor have built-in speakers?

A: No, this monitor does not have built-in speakers.

Q: Does this monitor have VESA mounting support?

A: AOC Q27G40XMN supports VESA Wall Mount Compliant (100mmx100mm).

Sponsored

Compare similar products

AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black
AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black

Witness stunning visuals with AOC Q27G40XMN, 27" Mini-LED backlight technology, delivering deeper blacks, brighter whites, and more vibrant colors.

AOC - 27” QD-OLED, QHD, 240hz, G-Sync Compatible, .03ms, Gaming Monitor - Black

The Q27G41ZDF delivers lightning-fast 240Hz refresh rates, 0.03ms GtG pixel response, and low input lag for ultra-responsive gameplay. The ultra-responsive QD-OLED panel and 10-bit color space provides sharp visuals with unbelievable contrast and vibrant colors, while the NVIDIA G-SYNCA Compatible AdaptiveSync and HDR ready panel enhances clarity and fluidity. Built for eSports, its stable base ensures a solid setup for intense matches.

Samsung - 27” Odyssey G50D QHD IPS 180Hz 1ms AMD FreeSync and G-Sync Compatible Gaming Monitor with HDR 400 (DisplayPort, HDMI) - Black

Samsung's Odyssey G50D Gaming Monitor with QHD resolution features incredibly detailed, pin-sharp images. The fast IPS panel delivers clear, vibrant colors and a 178° viewing angle, while the 180Hz refresh rate and 1ms response time (GtG) eliminates lag and enables frames with minimal blur for ultra-smooth gaming action. VESA DisplayHDR 400 offers more clarity, providing dynamic contrast with deeper blacks and brighter whites. AMD FreeSync keeps the monitor and graphics card refresh rate in sync for a seamless experience. Features an ergonomic stand that makes it easy to swivel, tilt, and adjust the height of the monitor, plus Eye Saver mode, which enables more focused gaming with less eye strain, for total comfort even when playing for extended periods of time.

Acer - Nitro XV275K 27" 4K UHD MiniLED 320Hz 1ms FreeSync Premium Gaming Monitor with HDR1000 (USB Type-C, DisplayPort, HDMI) - Black
3.5(6)

In competitive gaming, every frame matters. Introducing Acer's XV275K gaming monitor - the UHD (3840 x 2160) resolution monitor delivering you a 1152-zone miniLED local dimming panel and VESA DisplayHDR 1000. This AMD FreeSync Premium monitor takes gameplay to the next level of smooth, the game’s frame rate is determined by your graphics card, not the fixed refresh rate of the monitor, giving you a serious competitive edge.

Pros for AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black
Color Quality, HDR Performance, Contrast, VRR PerformanceOverall Performance, Refresh Rate, OLED Quality, Black Levels, CustomizationOverall Performance, Refresh Rate, ResolutionImage Quality
Cons for AOC - 27" Q27G40XMN Mini-LED, QHD, 180hz Gaming Monitor - Black
Local Dimming, Refresh Rate, Viewing AngleConnectivity, BrightnessConnectivity, SpeakersThere were no cons for this product

Specs

Reviews

Customers are saying

Customers are positive about the monitor's color quality, HDR performance, and contrast, with users noting impressive black levels and great picture quality. However, some customers have expressed concerns about the local dimming feature, which locks the brightness, and the viewing angles. There were also a few comments on the monitor stand. On the other hand, some customers are happy that the monitor can run at the advertised refresh rate without limiting the color range.

This summary was generated by AI based on customer reviews.

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    A great value monitor for PC games snd movies.

    Pros, 1. This is a great looking 1440p 180hz display that's great for PC and console gaming, watching movies, watching internet videos and content creation. 2. It's a VA panel with mini led technology so it give a great display for a great price. It's picture is close yo some OLED oanel, but not that good though. 3. 180hz refresh rate with single player games is great. 4. Having Adaptive Sync makes this monitor idea for Nvidia and AMD GPUs so you don't get screen tearing. 5. It's HDR 1200 and has over 1100 local dimming zones do the contrat it great, the brightness is great and the black are good(look under cons). Thus is great for warching movies and HDR gaming. 6. The stand is better than I expected from other reviewers(look under cons). 7. It has a 100 VESA mount for mounting to a wall or using a better stand. 8. It had an included Display Port cable of good quality. 9. For being mostly plastic the build quality seems decent. 10. The response latency is below 1ms. Very smooth. Cons, 1. This is a VA panel so for best viewing you have to be looking at the display at a fairly straight angle. 2. Even though the blacks are good it's still a good bit behind an OLED monitors, but I'll say OLED monitors do cost a lot moe money and risk screen burn in. 3. If you're a competitive Esports and First person shooter player this monitor probably isn't ideal for you. IMO you're better off getting a 240hz non-HDR 1440p monitor which many are of good quality and can be found cheaper. 4. This is a sidegrade from the previous 27 inch budget display. The stand is cheaper eith limited motion, it has less video inputs and the input are slower at HDMI 2.0 and DP 1.2 so the response time isn't going to always be as great. 5. From point 4, some users have reported their Nvidia GPUs can't go beyond 170hz while using Adaptive Sync. I didn't encounter this issue, but my momitor may have never firmware. By the way, there's no USB ports for firmware updates. 6. Even though the stand is usable I'd recommend either getting an aftermarket VESA mount stand or VESA mount to the wall so you don't risk this monitor being knocked over. 7. Last, this us only a 1440p momitor so don't expect 4k out of it. I will say since it's only 27 inches the display seems really sharp. I was considering buying a 32 inch monitor, but I don't have enough room in my desk area, the pixel per square inch wouldn't be as sharp and 32 inches is overkill for my vision. Orher people nay have a different prefer so again may sure you know what you want. All in all I don't regret this monitor since I'm not a competitive gamer and I love the smoothness of 180hz and less than 1ms of response time. I'm using a RTX 5099 which you may say that HPU is overkill for tgat monitor, but my use for that GOU is more than gaming, it's also about upscaling and editing my old DVDs, Blurays, movie files and pictures so monitor size isn't as important as it clearity. This monitor has great clarity.

    Realmofreal Posted

  • Rated 3 out of 5 stars

    Amazing value on paper, but corners were cut.

    Good value overall on paper, but it has a lot of drawbacks I think people should be aware of. The good: HDR is FANTASTIC, true HDR 1000 with amazing colors and the monitor can get SUPER bright. Even in SDR the colors look great and the VA smear you normally get is easily fixed by setting overdrive to "fast". Sadly, the main reason I got this was to play HDR content on Nintendo Switch 2. I found out quickly that while the DisplayPort connection looks normal, HDMI connection has a weird screen-door CRT effect to it. It's not super noticeable but every time I boot into Mario Kart World I just sit there staring at it thinking "... man, I should've spent a little more money." It's not bad enough to want to go through a return but... Also, local dimming is NOT going to be even close to OLED, I just keep it off. You get this super annoying dimming effect while using it for desktop things, like browsing youtube or apps. For example, one video in your feed will look really bright, but the next will have a super dim thumbnail and the video title is at like half brightness. It's super janky. The worst thing about it though is black screens almost look purple, ESPECIALLY at off-angles. Every time I shut my PC down I see the black screen and it looks like a weird smeary purple mess. (see pic) It's not noticeable too much in day to day use but I'm still disappointed. Build quality is crap but that's to be expected, I had to put it on a cardboard box. The OSD/Menu is decent but it doesn't have a directional nub, just crappy stiff buttons so the screen sways like its in a hurricane whenever you wanna adjust something. I would only recommend this for people who want to get into HDR content for cheap using Display Port only. For everyone else I'd say save a little and get a 150 dollar IPS display or jump up to OLED. This is a compromise for sure, but not one so bad I feel like I got scammed or anything.

    Colby7888 Posted

  • Rated 4 out of 5 stars

    Satisfactory

    Nothing wrong with the product at all, exactly as promised, I mean I upgraded from a really base level monitor so I can't compare to those but from what I can see picture quality, colors, etc. are all pleasing & HDR works and makes a noticeable difference, the local dimming is there

    KeithZ Posted

No content
Sponsored

Similar products from outside of Best Buy

sponsored

Finance Options

My Best Buy® Credit Card
10% back in rewardson your first day of purchases when approved for the My Best Buy® Credit Card.
Buy Now, Pay Later
4 payments starting at $50.00
Lease to own
Apply today with no credit needed and enjoy flexible payment options.

Special Offers

Top Offers
Trending
25% off Logitech accessories w/ hardware
Included with Purchase
Free 6-month security software & 1 more: $29.99 value