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 you are a competitive gamer valuing fast response times and high refresh rates, and are willing to invest in a premium experience, the AOC AG456UCZD with its larger screen might be suitable for you. However, for everyday productivity and casual gaming, the LG 27GP850 offers good performance at a more midrange price. The AOC shines in contrast and color depth, which benefits HDR gaming and media, but the LG balances cost with solid gaming capabilities and color accuracy for digital photo editing. The LG might fall short for HDR video editing, but provides better text clarity and image quality for general use. 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 AOC AG456UCZD (W-OLED)
- Best in class for casual gaming
- Very good refresh rate
- Best in class contrast
- Best in class response time
Advantages of the LG 27GP850 (IPS)
- Good text clarity
- Good image clarity
Key differences
Casual Gaming
9.6
6.0
3440 x 1440
RESOLUTION
2560 x 1440
240Hz
REFRESH RATE
180Hz
Inf:1
NATIVE CONTRAST
807:1
200 nits
SDR PEAK BRIGHTNESS
365 nits
Unknown
HDR PEAK BRIGHTNESS
472 nits
98.5 %
DCI-P3 COLOR GAMUT
95.6 %
Matte
COATING
Matte
The AOC AG456UCZD (W-OLED) is best in class for casual gaming, while the LG 27GP850 (IPS) is only fair.
Productivity
3.8
6.2
3440 x 1440
RESOLUTION
2560 x 1440
83 PPI
PIXELS PER INCH
109 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The LG 27GP850 (IPS) is only fair for productivity, while the AOC AG456UCZD (W-OLED) is poor.
Cost
$1,400
$389
$0
$500
$1,000
$1,500
$2,000
$2,500
The AOC AG456UCZD (W-OLED) has a price of $1,400 and the LG 27GP850 (IPS) costs $389.
HDR Gaming and Media Consumption
Yes
No
The AOC AG456UCZD (W-OLED) is suitable for HDR gaming and media consumption while the LG 27GP850 (IPS) is not suitable for HDR gaming and media consumption.
Print Photo Editing
Yes
No
The AOC AG456UCZD (W-OLED) is suitable for print photo editing while the LG 27GP850 (IPS) is not suitable for print photo editing.
Key similarities
Competitive Gaming
6.0
6.0
240Hz
REFRESH RATE
180Hz
0.0 ms
TOTAL RESPONSE TIME
6.8 ms
48 - 240 Hz
VARIABLE REFRESH RATE
20 - 180 Hz
No
STROBING / BFI
Yes
200 nits
SDR PEAK BRIGHTNESS
365 nits
The AOC AG456UCZD (W-OLED) and LG 27GP850 (IPS) are both only fair for competitive gaming.
Media Consumption
5.9
5.9
3440 x 1440
RESOLUTION
2560 x 1440
Inf:1
NATIVE CONTRAST
807:1
200 nits
SDR PEAK BRIGHTNESS
365 nits
Unknown
HDR PEAK BRIGHTNESS
472 nits
Matte
COATING
Matte
The LG 27GP850 (IPS) and AOC AG456UCZD (W-OLED) are both poor for media consumption.
Digital Photo Editing
Yes
Yes
Both the AOC AG456UCZD (W-OLED) and LG 27GP850 (IPS) are suitable for digital photo editing.
HDR Video Editing and Color Grading
No
No
Both the AOC AG456UCZD (W-OLED) and LG 27GP850 (IPS) are not suitable for HDR video editing and color grading.
Give feedback
We’re constantly working to improve.
How the AOC AG456UCZD (W-OLED) and the LG 27GP850 (IPS) compare to other monitors
Spec Comparison
 |  | |
| AOC AG456UCZD (W-OLED) | LG 27GP850 (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,400 | $389 | ||
Screen Size | |||
Screen Size | 44.5" | 27" | |
Resolution | |||
Resolution | 3440 x 1440 | 2560 x 1440 | |
Screen Type | |||
Screen Type | OLED | LED | |
Screen Sub-type | |||
Screen Sub-type | W-OLED | IPS | |
Refresh Rate | |||
Refresh Rate | 240Hz | 180Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | Inf:1 | 807:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 200 nits | 365 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | Unknown | 472 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | Yes | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 101.4 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 0.03 ms | 6.8 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 48 - 240 Hz | 20 - 180 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | Yes | |
Persistence Blur Score | |||
Persistence Blur Score | 8/10 | 7.3/10 | |
Ghosting Score | |||
Ghosting Score | 10/10 | 8/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 83 PPI | 109 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 3.8/10 | 7/10 | |
Image Clarity Score | |||
Image Clarity Score | 4.9/10 | 7/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 0 | 2 | |
HDMI 2.1 Ports | |||
HDMI 2.1 Ports | 3 | 0 | |
Micro HDMI Ports | |||
Micro HDMI Ports | 0 | 0 | |
DisplayPort 1.2 Ports | |||
DisplayPort 1.2 Ports | 0 | 0 | |
Shopping
LG 27GP850 (IPS)
See more
Dig into reviews and images
TechSpot
Tim Schiesser | May 2021
"In my opinion, the LG 27GP850 is the best in its class from the monitors I've tested, with the combination of great response times and a functional sRGB mode pushing it over the edge. It's generally worth the price premium and its overall balance of features with few weak areas makes it a monitor you won't be disappointed to have."
Give feedback
We're constantly perfecting our model
More comparisons for you
Compare AOC AG456UCZD (W-OLED) vs. ViewSonic XG341C-2K (VA Mini LED)
VS
Compare AOC AG456UCZD (W-OLED) vs. Asus PG34WCDM (W-OLED)
VS
Compare AOC AG456UCZD (W-OLED) vs. Samsung Odyssey OLED G8 G85SB (QD-OLED)
VS
Compare LG 27GP850 (IPS) vs. LG 27GP83B (IPS)
VS
Compare LG 27GP850 (IPS) vs. Asus PA279CV (IPS)
VS
Compare LG 27GP850 (IPS) vs. Dell S2722QC (IPS)
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
107,600
Recommendations made
16,140
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
