A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec monitor team Learn more
Updated April 11, 2024·
If competitive gaming is a priority, the Acer X27U with its higher refresh rate and exceptional response time will provide a smoother experience. However, for tasks demanding high resolution and superior text clarity, such as productivity or photo editing, the LG UltraFine with its higher resolution and glossy screen will be more advantageous. The Acer excels in HDR gaming and media with better contrast and color, while the LG stands out in color accuracy for print photo editing. Note, the LG's glossy screen can reflect more light, potentially impacting viewing in bright rooms compared to the Acer's matte finish. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the Acer X27U (W-OLED)
- Best in class for casual gaming
- Very good for competitive gaming
- Very good refresh rate
- Best in class contrast
- Best in class response time
Advantages of the LG UltraFine 5K 27MD5KL (IPS)
- Very good for productivity
- Best in class text clarity
- Best in class image clarity
- Good brightness
Key differences
Casual Gaming
9.5
6.0
2560 x 1440
RESOLUTION
5120 x 2880
240Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1200:1
211 nits
SDR PEAK BRIGHTNESS
500 nits
603 nits
HDR PEAK BRIGHTNESS
Unknown
95.5 %
DCI-P3 COLOR GAMUT
99.0 %
Matte
COATING
Glossy
The Acer X27U (W-OLED) is best in class for casual gaming, while the LG UltraFine 5K 27MD5KL (IPS) is only fair.
Competitive Gaming
8.8
5.0
240Hz
REFRESH RATE
60Hz
1.4 ms
TOTAL RESPONSE TIME
14.0 ms
20 - 240 Hz
VARIABLE REFRESH RATE
N/A
No
STROBING / BFI
No
211 nits
SDR PEAK BRIGHTNESS
500 nits
The Acer X27U (W-OLED) is very good for competitive gaming, while the LG UltraFine 5K 27MD5KL (IPS) is poor.
Productivity
5.8
8.7
2560 x 1440
RESOLUTION
5120 x 2880
111 PPI
PIXELS PER INCH
218 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Glossy
The LG UltraFine 5K 27MD5KL (IPS) is very good for productivity, while the Acer X27U (W-OLED) is poor.
Media Consumption
7.5
7.0
2560 x 1440
RESOLUTION
5120 x 2880
Inf:1
NATIVE CONTRAST
1200:1
211 nits
SDR PEAK BRIGHTNESS
500 nits
603 nits
HDR PEAK BRIGHTNESS
Unknown
Matte
COATING
Glossy
The Acer X27U (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are both good for media consumption, though the Acer X27U (W-OLED) is somewhat better.
Cost
$1,000
$1,179
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Acer X27U (W-OLED) has a price of $1,000 and the LG UltraFine 5K 27MD5KL (IPS) costs $1,179.
HDR Gaming and Media Consumption
Yes
No
The Acer X27U (W-OLED) is suitable for HDR gaming and media consumption while the LG UltraFine 5K 27MD5KL (IPS) is not suitable for HDR gaming and media consumption.
Key similarities
Digital Photo Editing
Yes
Yes
Both the Acer X27U (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the Acer X27U (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are not suitable for HDR video editing and color grading.
Print Photo Editing
No
No
Both the Acer X27U (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are not suitable for print photo editing.
Give feedback
We’re constantly working to improve.
How the Acer X27U (W-OLED) and the LG UltraFine 5K 27MD5KL (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer X27U (W-OLED) | LG UltraFine 5K 27MD5KL (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,000 | $1,179 | ||
Screen Size | |||
Screen Size | 27" | 27" | |
Resolution | |||
Resolution | 2560 x 1440 | 5120 x 2880 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Refresh Rate | |||
Refresh Rate | 240Hz | 60Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 1200:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 211 nits | 500 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 603 nits | Unknown | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 1.4 ms | 14 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 20 - 240 Hz | N/A | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 5/10 | |
Ghosting Score | |||
Ghosting Score | 9.5/10 | 6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 111 PPI | 218 PPI | |
Coating | |||
Coating | Matte | Glossy | |
Text Clarity Score | |||
Text Clarity Score | 6.7/10 | 10/10 | |
Image Clarity Score | |||
Image Clarity Score | 7.2/10 | 10/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 2 | 0 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 0 | 0 | |
Micro HDMI Ports | |||
Micro HDMI Ports | 0 | 0 | |
DisplayPort 1.2 Ports | |||
DisplayPort 1.2 Ports | 0 | 0 | |
Give feedback
We're constantly perfecting our model
More comparisons for you
Compare Acer X27U (W-OLED) vs. LG 27GR95QE (W-OLED)
VS
Compare Acer X27U (W-OLED) vs. Asus PA329C (IPS)
VS
Compare Acer X27U (W-OLED) vs. ViewSonic VX2776 2K OLED (W-OLED)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. Dell Alienware AW3225QF (QD-OLED)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. Samsung Odyssey OLED G9 G95SC (QD-OLED)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. Gigabyte FO32U2P (QD-OLED)
VS
FAQs
Why trust us
This information was produced and vetted by the PerfectRec monitors team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest monitor information and makes it digestible for you.
By the numbers
210
Monitors evaluated
10,500
Monitors stats compiled
15
Proprietary Monitors ratings developed
120,200
Recommendations made
18,030
Consumer hours saved
About the monitor team
Joe Golden, Ph.D
CEO and Monitors Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Featured in
