By Robin Owens 9 days ago, Monitors
Ultra-large 40-inch computer monitors for your PC.
40-inch 4K monitors are among the best deals on the market today. Some manufacturers create 40 inch monitors with a traditional 16: 9 format. Others offer ultra-wide models with a wider aspect ratio.
It doesn’t matter which of these options you prefer. This type of monitor will provide you with plenty of space for multitasking as well as an impressive performance.
We decided to help you find the most suitable display for your purposes. We analyzed offers from the best manufacturers and included the most worthy options on this list.
Check it carefully and you will surely find the best 40 inch monitor for you. So, let's take a look at the best 40-inch 4K monitors on the market.
Screen size: 42.5-inch | Aspect ratio: 16:9 | Resolution: 3840 x 2160 | Brightness: 350 cd/m² | Refresh rate: 60 Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: Mega | Color support: 99% sRGB
⊕ Provides 4K Ultra HD resolution
⊕ You can open up to 4 windows simultaneously
⊕ 350 cd/m2 Brightness level
⊖ The height isn’t adjustable
⊖ Lack of Pivot option
We found the main feature of the tested device in such categories as “Facilities” and “Image Quality”. The device is very impressive in these aspects.
This 40 inch monitor has built-in speakers. Although their bass response could be better, they are quite good. Besides, this LG product has a small joystick. You can use it to navigate the display conveniently.
Perhaps this is the best 40" monitor on this list when it comes to the number of connectivity options. It has 4 HDMI ports, one USB-C port, and one DisplayPort. Two out of four HDMIs are 1.4 ports. This means that with 4K resolution, the refresh rate is 30Hz.
Moreover, this monitor has two USB 3.0 ports (one of them allows you to charge devices) and standard audio out port. In addition to a giant 43-inch screen with 4K resolution for the impressive viewing experience, the LG 43UD79-B offers plenty of connectivity options, exclusive features, and a beautiful, slim design.
Screen size: 37.5-inch | Aspect ratio: 21:9 | Resolution: 3840 x 1600 | Brightness: 300 cd/m² | Refresh rate: 75 Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: 1000:1 | Color support: 100% sRGB
⊕ Excellent build and material quality
⊕ Qi wireless charging
⊕ High-quality built-in speakers
⊕ Great desktop space
⊖ Lack of VESA-mount
⊖ Doesn’t support HDR or high refresh
⊖ High price
ASUS differs from matrix counterparts in additional functions. The monitor includes Qi wireless charging at the base of the monitor stand as well as support for audio playback via Bluetooth.
Undoubtedly these features make this model one of the best 40 inch monitors. The drawback is the minimum functionality of the stand. You can adjust only the tilt.
The connectors are traditionally located on the backside. There is a power socket, two HDMI video inputs, a DisplayPort connector, a USB Type-C port, two USB 3.0 ports with fast charging support, a linear audio input, and headphone output.
Screen size: 43-inch | Aspect ratio: 16:9 | Resolution: 3840 x 2160 | Brightness: 350 cd/m² | Refresh rate: 60 Hz | Response time: 12ms | Viewing angle: 178°/178° | Contrast ratio: 1100:1 | Color support: 95% sRGB
⊕ Comes with a VESA-compatible mount
⊕ Great sound quality
⊕ Stunning viewing angles
⊕ Affordable price
⊖ Visible glow-effect against a black background
⊖ Inconsistent backlight
Those who are on a budget and don’t intend to purchase a monitor with an ultra-wide screen might consider buying the ViewSonic VX4380-4K. This 40-in monitor boasts a 16:9 aspect ratio.
The controls are located at the back. The device is VESA compatible, however, pay attention to the fact that it features a rectangular 200x100mm pattern. You can enjoy enveloping sound thanks to the in-built speakers that are located at the back panel.
Screen size: 43-inch | Aspect ratio: 32:10 | Resolution: 3840 x 1200 | Brightness: 350 cd/m² | Refresh rate: 120Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: 3000:1 | Color support: N/A sRGB
⊕ Awesome widescreen
⊕ Stunning brightness and rich colors
⊕ Offers built-in KVM and Picture in Picture mode
⊖ Expensive
⊖ Only one HDMI and one display port
⊖ Built-in speakers leave much to be desired
The CJ89 is a good 40 inch monitor offering a lot of screen real estate. This type of monitors is not as expensive as before, so you can get a super widescreen from a world-famous manufacturer without any extra costs.
The manufacturer has located many connectivity options at the bottom of the back panel. You can use two USB-C ports, 3.5mm audio ports, an HDMI input port, PC-in port, DisplayPort input, and a pair of USB ports. Unfortunately, there is no VGA or DVI port.
This is one of the top 40 inch monitors regarding a refresh rate of 120Hz. If necessary, you can reduce it to 60Hz.
Screen size: 43-inch | Aspect ratio: 32:10 | Resolution: 3840×1200 | Brightness: 320 cd/m² | Refresh rate: 120Hz | Response time: 4 ms | Viewing angle: 178°/178° | Contrast ratio: 3000:1 | Color support: 95% sRGB
⊕ Amazingly uniform backlighting
⊕ Includes a built-in PSU
⊕ Nice speakers
⊕ Simple and easy-to-navigate OSD
⊖ No vertical adjustment of the stand
⊖ Lack of USB ports
This ultra-wide monitor boasts a great picture and decent functionality. It can be a perfect replacement for two 24” screens. This best 40 inch 1080p monitor can display six open windows at the same time.
Moreover, its high contrast ratio (3000: 1) will provide an incredible visual experience including both the brightest white tones and the deepest blacks.
You get good quality at a very reasonable cost. A special cable slot helps you organize your workspace. The large bottom panel is another point in favor of this monitor.
Screen size: 38-inch | Aspect ratio: 21:9 | Resolution: 3840 x 1600 | Brightness: 300 cd/m² | Refresh rate: 60Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: 1000:1 | Color support: 99% sRGB
⊕ Convenient design and “bezel-less” panel
⊕ Adjustable PIP/PBP functions
⊕ Perfect factory calibration
⊕ Wide viewing angles
⊕ Worth its money
⊖ Controls are difficult to use
Thanks to the in-built 14-bit 3D-LUT, this monitor is capable of displaying up to 1.07 billion colors from a palette of 4.3 billion.
By running the Colorbration software based on the X-Rite solutions you can calibrate this monitor manually to adjust its settings to your liking. Thus, you can make the best out of the Uniformity Compensation technology.
This 40 inch monitor hasn’t been designed for gamers, which is why its vertical refresh rate is limited to a standard 60Hz rate that is common for all of the available interface modes. There is a wide array of connectivity options. The monitor comes with 2 HDMI 2.0, Display Port 1.4, and USB Type-C 3.1, which allows using it with the most recent ultrabooks and laptops. You will appreciate the fact that the monitor has 3 USB 3.1 inputs and a 3.5mm output for audio that allows connecting headphones, speakers, and a microphone.
Screen size: 42.5-inch | Aspect ratio: 16:9 | Resolution: 3840 x 2160 | Brightness: 350 cd/m² | Refresh rate: 60Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: 1300:1 | Color support: 124% sRGB
⊕ Superb text and image clarity
⊕ Wide viewing angles
⊕ Bezels are perfect for a dual-monitor setup
⊕ Decent color calibration
⊕ Several input ports
⊕ Great scaling with low resolutions
⊖ HDMI 1.4 only
⊖ HDMI ports are difficult to find
This best 40" monitor covers a wide color gamut and delivers impressive color accuracy. If you enjoy collaborative work, you will appreciate its wide viewing angles as well.
Colors are rich and perfectly saturated. Thanks to the large size and a wide array of features, this monitor is suitable for multitasking. By using the Screen + Software mode, PBP, and PIP functions, you can make the most out of the screen. To boost your effectiveness, you can open several windows with different inputs.
There are two HDMI ports, one Mini DisplayPort, one DisplayPort, D-Sub, audio input and output, one USB-PC port, and three USB 3.1 inputs, one of which allows quick charging.
Screen size: 42.5-inch | Aspect ratio: 16:9 | Resolution: 3840x2160 | Brightness: 350 cd/m² | Refresh rate: 60 Hz | Response time: 5 ms | Viewing angle: 178°/178° | Contrast ratio: 1000:1 | Color support: 96% sRGB
⊕ Supports a Quadrant-Snap mode
⊕ Eye comfort technology
⊕ The PBP function
⊕ Amazing connectivity
⊖ Not for the recent game titles
⊖ Overpriced
Before making a purchase, think carefully about what you need to buy a monitor for. If you are looking for a 40" monitor that is perfect both for work and entertaining, HP Black Pearl is one of the best HP monitors out there.
Note that its performance might be less than impressive if you play shooters or GPU-demanding games that require low response times. This 4K monitor with 3840x2160 resolution can easily serve as a replacement for a quad-monitor setup.
What’s more, you won’t have to worry about bezels dividing your viewing area. As Microsoft Windows 10 allows using a Quadrant-Snap mode, you can make the most out of it by choosing this monitor.
Screen size: 43-inch | Aspect ratio: 16:9 | Resolution: 3840 x 2160 | Brightness: 350 cd/m² | Refresh rate: 60 Hz | Response time: 8ms | Viewing angle: 178°/178° | Contrast ratio: 1000:1 | Color support: 96% sRGB
⊕ Crisp 4K images
⊕ View HD pictures from up to 4 sources
⊕ Amazing color accuracy
⊕ Includes lots of inputs
⊕ Stunning speakers
⊖ Too big footprint
⊖ You can adjust only stand tilt
Many experts consider this model the best 40 inch computer monitor for professional tasks. It has several outputs, offers multi-connectivity options, and includes Picture-by-Picture (PBP) and Picture-in-Picture (PIP) modes.
During our testing, we observed clear, contrast UHD (4K) images with high detail. You get an equally cool picture from almost any position thanks to the wide viewing angles.
Since this $500 monitor offers a wide range of ports, you can connect both old and latest PC models. You can use one DisplayPort, two HDMI ports, one VGA port, and one Mini DisplayPort. Unfortunately, you cannot use this display for games on the PS4 Pro and Xbox One X because it only has HDMI 1.4 ports.
| Image | Name | Features | |
|---|---|---|---|
 |
LG 43UD79-B
OUR CHOICE |
CHECK PRICE → | |
 |
ASUS Designo Curve
PROFESSIONAL |
CHECK PRICE → | |
 |
ViewSonic VX4380-4K
BUDGET |
CHECK PRICE → |
Before making a final choice, you need to decide whether you need to use a monitor for gaming, work-related tasks, or casual activities. Gamers will benefit from a high refresh rate and low response times, while designers should pay attention to color accuracy. If you need the best 40 inch monitor for general use, it’s better to find a monitor with a VA-display as it can deliver high-contrast visuals.
If a monitor has a high resolution, it means that it can display more pixels. Basic monitors come with a 1920x1080 resolution that is also known as 1080p, Full HD (FHD), or HD. If you aim at better image quality, pay attention to GHD and 4K monitors. It’s also important to take into account pixel density (PPI) as it is vital for picture quality. If a big monitor has low resolution, it will have low pixel density as well.
While choosing a monitor, opt for a higher refresh rate. It means that it will be able to update new information more quickly. This frequency is measured in Hz. A higher refresh rate adds to consistent image quality and smooth performance. If you enjoy playing games, a high refresh rate is especially important while choosing a 40 in monitor. You will need to purchase a monitor with at least a 75Hz refresh rate while most monitors marketed for gaming come with a 144Hz refresh rate and low response times. If you need a monitor for other tasks, a 60Hz refresh rate will suffice.
If you are a gamer, you need to choose the best 40 inch computer monitor with low response times. It means that it will be able to update pixels from black to white faster. A GTG response time refers to a monitor’s ability to update pixels of different shades of gray. Long response time might cause motion blur which will make playing games and watching videos less enjoyable.
The high-end gaming monitors deliver a 0.5ms response time but if you want to purchase a budget monitor, a 5ms response time might still be enough for you.
Monitors with curved displays have been designed for more immersive gaming and watching experience. While they significantly reduce eye strain, you might notice some signs of glare while looking at a monitor from an extreme angle. The curvature of a monitor can enhance the perception of depth on the screen. It creates a sense of depth by making objects on the display appear more three-dimensional, which can be particularly beneficial for gaming or watching movies with visually rich content. The best curved gaming monitors come with ultra-wide displays with their size starting from 30 inches. They are quite expensive as well.
Connectivity options are important as they allow one not only to connect a monitor to a PC but to other devices as well, for instance, a phone, camera, console, camcorder, Blu-Ray player, etc. Monitors usually support an HDMI connectivity standard that allows transferring video and audio data. Thanks to it, you can watch high-quality videos and play action-packed games with great image quality.
If you take a look at the best 40 inch monitors, you will notice that a DisplayPort is another great connectivity option that ensures high resolution and impressive frame rates. Just like an HDMI input, it can transfer video and audio. However, HDMI delivers 4K Ultra HD resolution as 30fps, while DisplayPort allows for 60fps thus contributing to the seamless watching and gaming experience.
DVI inputs are limited as they allow carrying video signals only. Some inputs deliver up to 1920x1200, while more advanced options can handle a higher resolution. HDMI, DVI, and DisplayPort are digital connectivity standards. Unlike them, VGA is an analog standard. It is perfectly capable of handling high resolution and frame rates, however, it can’t deliver the same image quality as other options can.
Most monitors nowadays come with USB ports as well so you can connect them to any compatible device, for instance, your smartphone, camera, video player, or camcorder. It allows enjoying stunning visuals streamed from your device directly to the best 40 inch monitor.
The biggest monitor that I have reviewed in this article comes with a 43-inch display.
It is so big that you can easily split your screen into up to 6 windows to work on several tasks simultaneously.
Yes, but this TV should have an HDMI input. Pay attention that you will also need a GPU that has an HDMI 2.0 port. Advanced versions come with HDMI 2.0a and other inputs that are compatible with HDR10 screens. This way, your TV will be able to display 4K resolution at 60Hz with 24-bit color.
The priciest monitor that I have mentioned in these 40 inch monitor reviews is the ASUS Designo Curve that costs about $1000.
