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 high-resolution productivity and digital photo editing are your priority and you want to save money, the Dell S2721QS, with its crisp 4K resolution on a 27-inch screen, would be a better fit. However, If you prefer a wider screen for an immersive experience and enjoy fast-paced games, the LG 34GN850B with its larger 34-inch ultra-wide display and higher refresh rate for smoother visuals is preferable, although it's more expensive. Neither is ideal for HDR gaming or professional HDR video editing, as their HDR peak brightness and color gamut coverage are not optimal for these uses. 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 Dell S2721QS (IPS)
- Good for productivity
- Very good text clarity
- Very good image clarity
Advantages of the LG 34GN850B (IPS)
- Very good response time
Key differences
Productivity
7.9
5.9
3840 x 2160
RESOLUTION
3440 x 1440
164 PPI
PIXELS PER INCH
108 PPI
Yes
ADJUSTABLE STAND
Yes
Matte
COATING
Matte
The Dell S2721QS (IPS) is good for productivity, while the LG 34GN850B (IPS) is poor.
Media Consumption
6.7
5.9
3840 x 2160
RESOLUTION
3440 x 1440
1221:1
NATIVE CONTRAST
950:1
373 nits
SDR PEAK BRIGHTNESS
359 nits
386 nits
HDR PEAK BRIGHTNESS
436 nits
Matte
COATING
Matte
The Dell S2721QS (IPS) is only fair for media consumption, while the LG 34GN850B (IPS) is poor.
Cost
$230
$750
$0
$200
$400
$600
$800
$1,000
$1,200
The Dell S2721QS (IPS) has a price of $230 and the LG 34GN850B (IPS) costs $750.
Digital Photo Editing
Yes
No
The Dell S2721QS (IPS) is suitable for digital photo editing while the LG 34GN850B (IPS) is not suitable for digital photo editing.
Key similarities
Casual Gaming
5.9
5.9
3840 x 2160
RESOLUTION
3440 x 1440
60Hz
REFRESH RATE
144Hz
1221:1
NATIVE CONTRAST
950:1
373 nits
SDR PEAK BRIGHTNESS
359 nits
386 nits
HDR PEAK BRIGHTNESS
436 nits
85.2 %
DCI-P3 COLOR GAMUT
94.5 %
Matte
COATING
Matte
The LG 34GN850B (IPS) and Dell S2721QS (IPS) are both poor for casual gaming.
Competitive Gaming
4.9
4.5
60Hz
REFRESH RATE
144Hz
14.5 ms
TOTAL RESPONSE TIME
6.2 ms
40 - 60 Hz
VARIABLE REFRESH RATE
20 - 160 Hz
No
STROBING / BFI
No
373 nits
SDR PEAK BRIGHTNESS
359 nits
The Dell S2721QS (IPS) and LG 34GN850B (IPS) are both poor for competitive gaming.
HDR Gaming and Media Consumption
No
No
Both the Dell S2721QS (IPS) and LG 34GN850B (IPS) are not suitable for HDR gaming and media consumption.
HDR Video Editing and Color Grading
No
No
Both the Dell S2721QS (IPS) and LG 34GN850B (IPS) are not suitable for HDR video editing and color grading.
Print Photo Editing
No
No
Both the Dell S2721QS (IPS) and LG 34GN850B (IPS) are not suitable for print photo editing.
Give feedback
We’re constantly working to improve.
How the Dell S2721QS (IPS) and the LG 34GN850B (IPS) compare to other monitors
Spec Comparison
 |  | |
| Dell S2721QS (IPS) | LG 34GN850B (IPS) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$230 | $750 | ||
Screen Size | |||
Screen Size | 27" | 34" | |
Resolution | |||
Resolution | 3840 x 2160 | 3440 x 1440 | |
Screen Type | |||
Screen Type | LED | LED | |
Screen Sub-type | |||
Screen Sub-type | IPS | IPS | |
Refresh Rate | |||
Refresh Rate | 60Hz | 144Hz | |
COLOR, CONTRAST & BRIGHTNESS | |||
|---|---|---|---|
Native Contrast | |||
Native Contrast | 1221:1 | 950:1 | |
SDR Peak Brightness | |||
SDR Peak Brightness | 373 nits | 359 nits | |
HDR Peak Brightness | |||
HDR Peak Brightness | 386 nits | 436 nits | |
Suitable for HDR Gaming and Media Consumption | |||
Suitable for HDR Gaming and Media Consumption | No | No | |
sRGB Color Gamut | |||
sRGB Color Gamut | 100 % | 99 % | |
MOTION CHARACTERISTICS | |||
|---|---|---|---|
Total Response Time | |||
Total Response Time | 14.5 ms | 6.2 ms | |
Variable Refresh Rate | |||
Variable Refresh Rate | 40 - 60 Hz | 20 - 160 Hz | |
Strobing / BFI | |||
Strobing / BFI | No | No | |
Persistence Blur Score | |||
Persistence Blur Score | 5/10 | 6.6/10 | |
Ghosting Score | |||
Ghosting Score | 6/10 | 8/10 | |
TEXT & IMAGE CLARITY | |||
|---|---|---|---|
Pixels Per Inch | |||
Pixels Per Inch | 164 PPI | 108 PPI | |
Coating | |||
Coating | Matte | Matte | |
Text Clarity Score | |||
Text Clarity Score | 8.1/10 | 7/10 | |
Image Clarity Score | |||
Image Clarity Score | 8.1/10 | 7/10 | |
PORTS & CONNECTIVITY | |||
|---|---|---|---|
HDMI 1.4 Ports | |||
HDMI 1.4 Ports | 0 | 0 | |
HDMI 2.0 Ports | |||
HDMI 2.0 Ports | 2 | 2 | |
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 | 1 | 0 | |
Shopping
Dell S2721QS (IPS)
See more
Dig into reviews and images
Tom's Hardware
Scharon Harding | September 2021
"The Dell S2721QS 4K monitor brings IPS-level colors and some handy features, like a versatile stand with height adjustments and picture-in-picture for connecting dual systems. But don’t get it for HDR."
LG 34GN850B (IPS)
See more
Dig into reviews and images
TechSpot
Tim Schiesser | August 2020
"Mid-range 3440 x 1440 144Hz VA monitors are ~$500 to $600 these days. You are getting a much better product for the higher price of the LG, with faster response times and better colors (outside of the contrast ratio), but this is definitely a monitor that is reserved for those that want the best of the best and are willing to pay for it."
Give feedback
We're constantly perfecting our model
More comparisons for you
Compare Dell S2721QS (IPS) vs. MSI G273QPF (IPS)
VS
Compare Dell S2721QS (IPS) vs. ViewSonic XG2431 (IPS)
VS
Compare Dell S2721QS (IPS) vs. KTC H27T22 (IPS)
VS
Compare LG 34GN850B (IPS) vs. LG 34GP83A (IPS)
VS
Compare LG 34GN850B (IPS) vs. MSI MAG 271QPX (QD-OLED)
VS
Compare LG 34GN850B (IPS) vs. Dell Alienware AW3821DW (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
108,800
Recommendations made
16,320
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
