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 22, 2024·
If you're interested in a monitor primarily for gaming, the Acer Predator X45 with its high refresh rate and OLED technology will offer deeper blacks and more vibrant colors, which enhances gaming immersion, especially in dark scenes. However, its screen size and curvature may make it less ideal for tasks requiring straight lines, like graphic design. On the other hand, if your focus is on productivity and detailed digital photo editing, the LG UltraFine 5K offers a higher resolution that results in sharper text and images, and its color accuracy is excellent for tasks that demand precise colors. Keep in mind that its lower refresh rate makes it less suitable for competitive gaming. Both are at a premium price point, so your decision should hinge on whether your priority is gaming performance or professional-grade color accuracy and resolution for productivity tasks. 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 Predator X45 (W-OLED)
- Best in class for casual gaming
- Very good refresh rate
- Best in class contrast
- Best in class brightness
- 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
Key differences
Casual Gaming
9.8
6.0
3440 x 1440
RESOLUTION
5120 x 2880
240Hz
REFRESH RATE
60Hz
Inf:1
NATIVE CONTRAST
1200:1
1000 nits
SDR PEAK BRIGHTNESS
500 nits
Unknown
HDR PEAK BRIGHTNESS
Unknown
98.5 %
DCI-P3 COLOR GAMUT
99.0 %
Matte
COATING
Glossy
The Acer Predator X45 (W-OLED) is best in class for casual gaming, while the LG UltraFine 5K 27MD5KL (IPS) is only fair.
Competitive Gaming
6.4
5.0
240Hz
REFRESH RATE
60Hz
0.0 ms
TOTAL RESPONSE TIME
14.0 ms
48 - 240 Hz
VARIABLE REFRESH RATE
N/A
No
STROBING / BFI
No
1000 nits
SDR PEAK BRIGHTNESS
500 nits
The Acer Predator X45 (W-OLED) is only fair for competitive gaming, while the LG UltraFine 5K 27MD5KL (IPS) is poor.
Productivity
4.0
8.7
3440 x 1440
RESOLUTION
5120 x 2880
83 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 Predator X45 (W-OLED) is poor.
HDR Gaming and Media Consumption
Yes
No
The Acer Predator X45 (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.
HDR Video Editing and Color Grading
Yes
No
The Acer Predator X45 (W-OLED) is suitable for HDR video editing and color grading while the LG UltraFine 5K 27MD5KL (IPS) is not suitable for HDR video editing and color grading.
Print Photo Editing
Yes
No
The Acer Predator X45 (W-OLED) is suitable for print photo editing while the LG UltraFine 5K 27MD5KL (IPS) is not suitable for print photo editing.
Key similarities
Media Consumption
7.1
7.0
3440 x 1440
RESOLUTION
5120 x 2880
Inf:1
NATIVE CONTRAST
1200:1
1000 nits
SDR PEAK BRIGHTNESS
500 nits
Unknown
HDR PEAK BRIGHTNESS
Unknown
Matte
COATING
Glossy
The Acer Predator X45 (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are both good for media consumption.
Cost
$1,200
$1,179
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
The Acer Predator X45 (W-OLED) has a price of $1,200 and the LG UltraFine 5K 27MD5KL (IPS) costs $1,179.
Digital Photo Editing
Yes
Yes
Both the Acer Predator X45 (W-OLED) and LG UltraFine 5K 27MD5KL (IPS) are suitable for digital photo editing.
Give feedback
We’re constantly working to improve.
How the Acer Predator X45 (W-OLED) and the LG UltraFine 5K 27MD5KL (IPS) compare to other monitors
Spec Comparison
 |  | |
| Acer Predator X45 (W-OLED) | LG UltraFine 5K 27MD5KL (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,200 | $1,179 | ||
Screen Size | |||
Screen Size | 45" | 27" | |
Resolution | |||
Resolution | 3440 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 | 1000 nits | 500 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | Unknown | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | Unknown | 100 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.01 ms | 14 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | N/A | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 5/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 6/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 218 PPI | |
Coating | |||
Coating | Matte | Glossy | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 10/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 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 Predator X45 (W-OLED) vs. Dell Alienware AW3225QF (QD-OLED)
VS
Compare Acer Predator X45 (W-OLED) vs. Samsung Odyssey OLED G9 G95SC (QD-OLED)
VS
Compare Acer Predator X45 (W-OLED) vs. Gigabyte FO32U2P (QD-OLED)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. Acer XB323U-GX (IPS)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. Asus XB273U F (IPS)
VS
Compare LG UltraFine 5K 27MD5KL (IPS) vs. LG 32GS95UE (W-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
117,200
Recommendations made
17,580
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
