Monoprice 40in CrystalPro Monitor: Best UWQHD Desk Screen

The monoprice 40in crystalpro monitor (part number 44394) is an unusual ultrawide display that combines a 40-inch flat IPS panel, 3440 × 1440 resolution, and a 144Hz refresh rate. It offers plenty of screen space for gaming and productivity, and independent testing by Tom’s Hardware found strong color accuracy, impressive contrast for an IPS panel, and very low input lag. However, the monitor has weak overdrive performance and disappointing HDR brightness tracking. There is another important consideration for prospective buyers: Monoprice’s product pages currently identify the original and open-box listings as unavailable. This review evaluates its tested performance and explains when a used or remaining-stock unit might still make sense.

Monoprice 40in CrystalPro monitor review: the verdict

The Monoprice CrystalPro 44394 is a compelling large-format display for buyers who want one screen for gaming, multitasking, and everyday work. Its biggest advantage is the 40-inch, 21:9 layout. You get the horizontal workspace of an ultrawide without the physical separation between two monitors, while the 144Hz refresh rate and Adaptive-Sync support make it capable of gaming as well as office use.

Tom’s Hardware published an instrumented review on March 29, 2024. Its verdict was favorable overall, highlighting the monitor’s image quality, low input lag, viewing angles, and value at its original price point. The review also found that the overdrive settings did not reduce motion blur as effectively as competing gaming monitors. HDR performance was another weakness because aggressive dimming made the image too dark in a room with ambient light.

The monitor is therefore best understood as a large, versatile ultrawide with credible gaming performance, rather than a specialist esports display. It is also a model that prospective buyers may need to source secondhand because Monoprice no longer lists its product page as available.

These specifications combine the manufacturer’s manual and product documentation with Tom’s Hardware’s testing. Manufacturer claims and independently measured results are distinguished throughout this review.

Design, resolution, and physical dimensions

The CrystalPro 44394 stands out because it is a 40-inch flat ultrawide rather than the curved 34-inch monitors that dominate this category. Its 3440 × 1440 resolution provides a wide workspace for games, timelines, spreadsheets, and several side-by-side application windows.

The 21:9 aspect ratio is particularly useful for replacing a dual-monitor setup. You can keep a game or main application in the center while placing supporting windows along either side. For productivity, this can reduce the need to move between applications or turn your head toward a second display.

There is a trade-off, however. The monitor’s resolution is spread over a large 40-inch diagonal, resulting in a pixel density of approximately 93 pixels per inch. That is lower than a 27-inch QHD display. Tom’s Hardware noted that individual pixels may become noticeable when sitting two feet away or closer, although the image remains suitably detailed at a more typical viewing distance.

A flat panel also avoids the pronounced curve used by many large ultrawides. That can be useful for office applications, documents, and tasks where straight lines matter. On the other hand, the screen extends far to either side, so a very close viewing position may require more eye movement than a smaller display.

The included stand takes up meaningful desk space. Monoprice’s manual lists dimensions of approximately 37.2 inches wide, 23.5 inches tall at maximum stand height, and 11.3 inches deep. The assembled monitor weighs about 24.2 pounds, so check the desk’s load capacity if you use a monitor arm or a lightweight standing desk.

Image quality and color accuracy

Image quality is one of the CrystalPro’s strongest attributes. Tom’s Hardware found that its sample delivered good color accuracy without requiring calibration, making it practical for gaming, web browsing, movies, and general productivity.

The review measured approximately 88% DCI-P3 coverage. That is sufficient for colorful games and entertainment, although it is not particularly exceptional for a modern wide-gamut professional display. A wide gamut allows a monitor to reproduce colors beyond the conventional sRGB range, but accurate color reproduction also depends on calibration, tone response, and whether an appropriate color-limited mode is available.

The absence of an sRGB mode is an important limitation. The monitor’s extended color gamut remains available during ordinary SDR content, so some applications may appear more saturated than intended. Gamers may enjoy the extra color intensity, but photographers, graphic designers, and people preparing images for controlled web or print workflows should be more cautious.

Tom’s Hardware found that the default grayscale performance was close to accurate, with errors becoming more noticeable toward the brightest tones. Adjusting the RGB controls improved grayscale tracking in its testing. The gamma presets did not precisely match the standard 2.2 target, but the reviewer found the lighter gamma option useful for improving highlight detail and overall image brightness.

The practical conclusion is that the CrystalPro provides good general-purpose picture quality without demanding extensive setup. It is not a substitute for a properly calibrated professional monitor, however. If your work requires predictable color reproduction across devices, a display with an explicit sRGB mode and stronger color-management features is a better choice.

Gaming performance and 144Hz motion

The CrystalPro’s 144Hz refresh rate provides a clear advantage over conventional 60Hz office displays. At 144Hz, the monitor can refresh its image approximately every 6.94 milliseconds, compared with 16.67 milliseconds at 60Hz. This gives compatible games more opportunities to display new frames and can make camera movement and aiming feel smoother.

The 144Hz ceiling is not the whole story. Tom’s Hardware measured very low input lag, which helped controls feel responsive during gameplay. That result matters because input lag and pixel response are different properties. Input lag describes the delay before a displayed image reflects an input, while pixel response concerns how quickly individual pixels transition between colors.

The weak point was overdrive. Overdrive increases the voltage applied to pixels in an attempt to speed up transitions, but aggressive tuning can also produce distracting overshoot artifacts. Tom’s Hardware found that all three response-time overdrive levels on the 44394 were relatively weak, providing only modest reductions in motion blur.

This does not make the monitor unsuitable for gaming. The reviewer reported precise-feeling controls in Doom Eternal despite some visible blur. However, players who prioritize extremely clear tracking in fast competitive shooters may prefer a well-tuned modern 165Hz, 180Hz, or 240Hz monitor.

Adaptive-Sync is another useful feature. Monoprice lists a FreeSync operating range of 50–144Hz, and Tom’s Hardware reported successful FreeSync and G-SYNC operation. The NVIDIA compatibility was not officially certified, so buyers should not treat it as identical to a monitor listed as G-SYNC Compatible.

For the best result, use a compatible connection, enable Adaptive-Sync in the monitor menu and graphics driver, and confirm the available refresh-rate mode in Windows. The graphics card must also render enough frames to make practical use of the refresh ceiling. A 144Hz label does not mean that every game will run at 144 frames per second.

HDR performance, brightness, and contrast

The CrystalPro supports HDR10 signals and uses 16 edge-based dimming zones to improve contrast. This is more sophisticated than a basic monitor with no local dimming, but it is very different from the fine-grained control offered by OLED or a Mini LED display with hundreds or thousands of dimming zones.

Tom’s Hardware measured peak brightness at approximately 410 nits in its test conditions, slightly above the manufacturer’s 400-nit specification. That is a useful brightness level for ordinary gaming and office work. Its contrast performance was also unusually good for an IPS panel, exceeding 1,500:1 in the review’s SDR measurements.

The edge-dimming system can produce a much higher effective contrast ratio in certain HDR scenes. Tom’s Hardware measured approximately 6,374.5:1 in its HDR testing with the dimming system active. That figure reflects the test pattern and local-dimming behavior rather than a conventional native IPS contrast ratio.

Despite those promising measurements, HDR is the product’s clearest image-quality weakness. Tom’s Hardware found that the monitor’s luminance tracking was too aggressive, leaving much of the picture darker than the reference target. Bright highlights still stood out, but the overall image lacked punch in a room with ambient light. The reviewer found HDR content more convincing in a darkened room.

There are therefore two different conclusions about contrast. In SDR, the CrystalPro has a strong image for an IPS monitor. In HDR, the 16-zone system can improve depth, but its limited number of zones and dark tone mapping constrain the experience.

Buy this monitor primarily for its size, SDR picture quality, and high refresh rate. Treat HDR as a useful extra rather than the main reason to purchase it. If HDR gaming is a major priority, a current OLED or Mini LED display is worth comparing before committing to an older IPS model.

Connectivity, controls, and everyday usability

The CrystalPro includes one DisplayPort 1.4 input, two HDMI 2.0 ports, a USB-C input, a 3.5mm headphone output, and two integrated 5W speakers. That is a reasonable mix for connecting a desktop PC, a secondary device, and a console or streaming source.

DisplayPort is the most straightforward starting point for PC gaming at the maximum refresh rate. The available refresh combinations can differ by input, resolution, and source device, so confirm the relevant mode in the manual rather than assuming every HDMI and USB-C connection supports 3440 × 1440 at 144Hz. The presence of USB-C also should not be mistaken for a complete laptop docking solution; documentation reviewed for this model does not establish a USB hub or a specified laptop-charging power-delivery rating.

The integrated speakers are convenient for basic audio, video calls, and system notifications. Their inclusion may reduce desk clutter if you do not need dedicated speakers. However, anyone who values immersive game audio or music quality will still benefit from external speakers or a good headset.

The on-screen display offers gaming options such as selectable overdrive levels, crosshairs, timers, a refresh-rate counter, and Adaptive-Sync. It also includes picture settings and control of the dynamic-brightness feature. The available choices are useful, but Tom’s Hardware found some of the menu organization confusing. The monitor uses an approach to its game presets that is less intuitive than simply selecting a clearly named preset and leaving the remaining settings alone.

The controls are usable once configured, but the initial setup may take more experimentation than on a better-organized gaming display. Choose your preferred picture and response-time settings once, then leave them alone unless you need to change modes for a specific game or application.

Ergonomics and desk setup

The supplied stand supports height adjustment, tilt, and swivel. Monoprice’s manual specifies approximately 95mm of height travel, around five degrees of forward tilt, up to 15 degrees of backward tilt, and 15 degrees of rotation. The stand does not provide pivot adjustment, which is not a major loss for such a wide panel because turning a 40-inch ultrawide into portrait orientation would be impractical for most desks.

Ergonomics matter more with a screen this large. Position the monitor so the screen is centered on your body, the viewing distance is comfortable, and the top of the image does not force you to look upward. Sitting too close can make both the edges and the relatively modest pixel density more noticeable. A deeper desk can help, provided the stand and keyboard still leave enough usable space.

The 100 × 100mm VESA mounting pattern gives you an alternative if the supplied stand does not fit your setup. Confirm the arm’s supported weight range and the clearances behind the display before mounting it. The assembled monitor weighs approximately 24.2 pounds, which is enough to rule out some lightweight arms.

For a multi-monitor workspace, the CrystalPro can replace two conventional displays with one continuous canvas. For gaming, remember that not every title handles a 21:9 aspect ratio equally well. Some games support ultrawide rendering natively, while others may display black bars or restrict the visible field of view. Check compatibility with the games you play most often before making the ultrawide format your main reason for buying.

Price, availability, and ownership risk

The CrystalPro 44394 was reviewed by Tom’s Hardware in March 2024 as a monitor in roughly the $500 category. The review’s product-price widgets also displayed $549.99, but those figures are historical and should not be interpreted as a current market price.

During research on October 20, 2026, Monoprice’s original product page reported that the item was no longer available. An open-box listing also appeared in Monoprice’s search results at $459.99, but the linked product page reported that it was no longer available as well. That cached price is not a confirmed live offer, and Amazon availability and current stock could not be verified reliably for this review.

This changes the buying recommendation significantly. If you already own the 44394, the independent testing suggests it remains capable of delivering a satisfying large-screen gaming and productivity experience. If you are shopping for one used, inspect the panel and stand carefully and confirm the seller’s return terms before paying a premium for a model that is no longer in regular manufacturer inventory.

Look for dead pixels, backlight uniformity issues, input problems, and signs of physical damage. Test the full 144Hz refresh rate rather than checking the monitor only at 60Hz. Also confirm which accessories are included, because an open-box or secondhand unit may not include every original cable or component.

An older model should usually become more attractive as its purchase price falls, but the CrystalPro’s original value proposition does not automatically carry forward to the used market. If it costs nearly as much as a newer ultrawide with better motion handling, modern connectivity, or a stronger warranty, the newer display may be the better investment.

Who should buy the Monoprice CrystalPro 44394?

The 44394 makes the most sense for users who want a large, flat ultrawide for a combination of gaming and productivity. Its screen area can be especially valuable for editing timelines, spreadsheets, multiple windows, and immersive games. The strong SDR image quality, wide viewing angles, useful stand adjustment, and low input lag are meaningful advantages supported by independent testing.

It is less suitable for competitive players who put the highest priority on motion clarity. Its 144Hz refresh rate is adequate for many games, but the weak overdrive results mean motion blur remains more noticeable than on better-tuned alternatives. Buyers who mainly play cinematic games may be less bothered by that limitation than players who track targets rapidly in esports titles.

The lack of an sRGB mode is a limitation for color-critical work, and HDR should not be the primary reason to select this display. Its USB-C input also should not be assumed to provide laptop charging or docking functionality without additional confirmation.

Most importantly, this is a discontinued or unavailable model in Monoprice’s current product catalog. A used purchase can still be rational if the price reflects its age and the seller permits sufficient testing. A new purchase is not a realistic recommendation unless a verified retailer has remaining stock, a clear warranty, and return terms that make sense.

Frequently asked questions

Is the Monoprice CrystalPro 44394 a 4K monitor?

No. It has a native resolution of 3440 × 1440. This is an ultrawide QHD-class format, not standard 3840 × 2160 4K. It offers more horizontal desktop space than a conventional 16:9 QHD monitor but fewer total pixels than a 4K screen.

Does the CrystalPro support 144Hz over HDMI?

The monitor has two HDMI 2.0 inputs and one DisplayPort 1.4 input, but the exact maximum refresh-rate modes can vary by input. DisplayPort is the recommended starting point for PC use at the maximum refresh rate. Confirm the appropriate HDMI mode in the manual if you intend to use a console or another HDMI-only device.

Is its 1ms response-time claim accurate?

Monoprice advertises a 1ms MPRT figure, while Tom’s Hardware lists an 8ms GTG specification. These figures describe different measurement approaches and should not be compared as if they were identical. Independent testing found weak overdrive performance and more motion blur than some competing high-refresh monitors.

Does it work with NVIDIA graphics cards?

Tom’s Hardware reported successful G-SYNC operation during our research, although the monitor was not NVIDIA-certified. This is useful evidence of practical compatibility, but it is not a guarantee that every GPU, driver, or refresh-rate combination will behave identically.

Is the CrystalPro worth buying used?

It can be worth considering if you want its particular 40-inch flat ultrawide format at a price that reflects its age. Test the screen thoroughly, verify the maximum refresh rate and inputs, and establish the seller’s return policy. If the cost approaches that of a newer ultrawide with better motion handling and a current warranty, compare those alternatives before committing.

Final verdict

The Monoprice CrystalPro 44394 remains an interesting ultrawide monitor because it combines a spacious 40-inch screen, 3440 × 1440 resolution, 144Hz refresh rate, and strong SDR image quality. Tom’s Hardware’s independent measurements support its reputation for low input lag, accurate out-of-box colors, and unusually good contrast for an IPS panel. Its weak overdrive and dark HDR tone mapping are real compromises, though, and it is not an ideal choice for demanding competitive gaming or HDR-focused setups.

The main obstacle today is availability. With Monoprice’s product pages reporting that the model is no longer available, buying advice depends on the condition and price of an actual unit rather than its original specifications alone. Consider it as a used or remaining-stock option when the economics are compelling, but do not pay a premium simply for the size. A newer, well-reviewed ultrawide may provide a better long-term purchase.