The catch
BenQ RD Series 28-inch Programming Monitor
Because 3:2 is taller than widescreen video, most films leave unused space above and below.
Side by side
BenQ RD280U vs Dell U3225QE: BenQ fits more code rows into less width, and Dell adds 120Hz plus charging headroom
Quick verdict
Go with the RD280U if you want more vertical pixels in a narrower body. The U3225QE is the pick for a larger 16:9 workspace with 120Hz motion and stronger laptop charging.
Before you buy
Why, and what it costs you
Detail should be compared at the actual screen size
Against 139.9 for U3225QE, RD280U works out to about 163.7 pixels per inch. A denser panel can draw finer text at the same logical size, and workspace is determined by comfortable scaling.
Where this comes from
Pixels per inch = √(width² + height²) / diagonal. The inputs are 3840 × 2560 at 28.2 inches and 3840 × 2160 at 31.5 inches. Because the diagonals are published nominal values, these figures are approximate.
The catch
Dell UltraSharp 32 4K Thunderbolt Hub Monitor
Compared with the 27-inch UltraSharp, the 31.5-inch panel takes up more desk width.
BenQ RD Series 28-inch Programming Monitor
- Why pick it
- Fit more rows of code or documents
- Need a body that is narrower
- The catch
- Because 3:2 is taller than widescreen video, most films leave unused space above and below.
Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- Why pick it
- Like a larger screen in 16:9
- Require 120Hz plus a Thunderbolt hub
- The catch
- Compared with the 27-inch UltraSharp, the 31.5-inch panel takes up more desk width.
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What this page compares
A narrower body with more vertical pixels is the RD280U's strength. The U3225QE suits a larger 16:9 workspace with 120Hz motion and stronger laptop charging.
More vertical pixels fit on the smaller diagonal
Which one fits
Pick the situations that sound like you
Fit more rows of code or documents
Against U3225QE at 2160, RD280U provides 2560 vertical pixels. The 400-row difference helps only as far as comfortable scaling preserves extra visible content.
- BenQ RD Series 28-inch Programming Monitor
- Better fit
- Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- Depends
Like a larger screen in 16:9
Compared with the 28.2-inch 3:2 BenQ, U3225QE uses a 31.5-inch 16:9 panel. That gives it the larger conventional widescreen layout.
- BenQ RD Series 28-inch Programming Monitor
- Depends
- Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- Better fit
Need a body that is narrower
Dell is 713.2 mm wide and RD280U is 610.4 mm. That saves 102.8 mm of horizontal chassis space, before arm and cable clearance.
- BenQ RD Series 28-inch Programming Monitor
- Better fit
- Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- Depends
Require 120Hz plus a Thunderbolt hub
In U3225QE, 120 Hz and a Thunderbolt hub are combined. RD280U stops at 60 Hz and therefore cannot supply a required 120 Hz display mode.
- BenQ RD Series 28-inch Programming Monitor
- Not suitable
- Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- Better fit
In practice
Differences you will notice
Detail should be compared at the actual screen size
Against 139.9 for U3225QE, RD280U works out to about 163.7 pixels per inch. A denser panel can draw finer text at the same logical size, and workspace is determined by comfortable scaling.
How we worked this out
Pixels per inch = √(width² + height²) / diagonal. The inputs are 3840 × 2560 at 28.2 inches and 3840 × 2160 at 31.5 inches. Because the diagonals are published nominal values, these figures are approximate.
Keep native detail apart from game speed
Per frame, RD280U draws 9.8 million native pixels and U3225QE 8.3 million. Refresh ceilings are 60Hz and 120Hz respectively.
How we worked this out
Native pixels = width × height. Refresh interval =1000 / Hz, which gives 16.7 and 8.3 ms. These calculations concern signal and cadence and are not measured frame rates, input lag or pixel response.
Less horizontal desk space for more rows
While reducing chassis width by 102.8 mm, RD280U adds about 19% more vertical pixels.
How we worked this out
(2560 / 2160 - 1) × 100 = 18.5% and 713.2 - 610.4 = 102.8 mm. How much content is visible depends on scaling.
Option A
BenQ, RD280U
RD Series 28-inch Programming Monitor
Code and documents fit well on this tall 3:2 screen, though the usable space depends on app layout and scaling. A laptop and a desktop can both be served through USB-C and a correctly connected KVM.
- Best for
- Long code files that you want to read without a wider screen
Facts we checked
- 28.2-inch IPS panel, 3840 by 2560, with a 3:2 aspect ratio
- Native refresh of up to 60Hz over DP or USB-C, or 50Hz over HDMI, and up to 90W from the video/data USB-C upstream
- 610.4 mm of chassis width and 244.5 mm of stand depth
- A built-in KVM and a USB-C MST display output
Option B
Dell, U3225QE
UltraSharp 32 4K Thunderbolt Hub Monitor
On a desk where you want fewer separate boxes, this larger 4K work screen offers 120Hz scrolling, 140-watt charging and a Thunderbolt hub.
- Best for
- Demanding laptop work on a large desk run through one cable
Facts we checked
- IPS Black panel at 120Hz, 31.5-inch, 3840 by 2160
- Up to 140 watts from Thunderbolt 4
- With its stand, 713.2 mm wide and 214.88 mm deep
Spec by spec
Where they really differ
| Spec | BenQ RD Series 28-inch Programming Monitor | Dell UltraSharp 32 4K Thunderbolt Hub Monitor | In practice |
|---|---|---|---|
| Native resolution | 3840 × 2560 | 3840 × 2160 | Usable logical workspace changes with operating-system scaling. |
| Panel diagonal | 28.2 in | 31.5 in | The measured active diagonal may differ slightly from a nominal screen class. |
| Maximum refresh | 60Hz | 120Hz | Look at the exact input, resolution and overclock conditions. |
| Panel technology | IPS | IPS Black | A measured color or motion winner is not established by panel type alone. |
| Laptop power | Up to 90W | Up to 140W | For the desired delivery, the host, cable and negotiated power profile all have to support it. |
| Chassis width | 610.4 mm | 713.2 mm | Leave additional room for cables, arms and neighboring equipment. |
| Stand depth | 244.5 mm | 214.88 mm | More desk depth can be taken by the included stand than by the display cabinet. |
Trade-offs
What each pick costs you
With BenQ RD Series 28-inch Programming Monitor
- The 60Hz panel suits reading and development better than fast games.
With Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- A laptop and cable that support it are needed to reach the 140-watt ceiling, and not every laptop will charge at that rate.
Decision guide
How to decide
The RD280U is the option with more vertical pixels in a narrower body, while the U3225QE offers a larger 16:9 workspace, 120Hz motion and stronger laptop charging.
More vertical pixels fit on the smaller diagonal
At 3840 by 2560, the RD280U adds 400 rows over Dell 4K. How many extra code lines stay visible at a comfortable text size depends on scaling.
Different desk problems are solved by width and by height
BenQ's chassis measures 610.4 mm wide and Dell's 713.2 mm. A narrow desk can suit the taller 3:2 shape without a lower vertical resolution being forced on you.
For motion and charging, Dell is the stronger option
Refresh doubles from 60 to 120Hz on the U3225QE, and the rated power ceiling rises from 90 to 140W. On a mixed-use desk those gains can matter more than extra rows.
What this page can’t tell you
- The pixel density and refresh interval numbers are arithmetic on published specifications, and no visual-quality or latency test was measured.
- USB-C power numbers are a negotiated maximum, and a laptop will not necessarily charge at full speed.
By the numbers
What the data shows
What we found across the computer monitors we compare, plus the checked facts behind each finding.
How many fit
This guide keeps all 50 models in play. The pick rests on the facts and trade-offs on this page.
50 models fit, out of 50 checkedThe gap in numbers
Dell UltraSharp 32 4K Thunderbolt Hub Monitor lists 120 Hz for top refresh rate, 100% more than the 60 Hz on BenQ RD Series 28-inch Programming Monitor.
- BenQ RD Series 28-inch Programming Monitor
- 60 Hz
- Dell UltraSharp 32 4K Thunderbolt Hub Monitor
- 120 Hz
- Models with this figure
- 44 of 50
Show the facts and the math
How we countedNo needs are preselected here. Open the matcher and add the ones that apply to your home, room or setup.
How we calculatedFigures use the fastest published refresh mode. Resolution, connection and color settings decide when you get that rate. For context, 44 of 50 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| BenQ RD Series 28-inch Programming Monitor | None of these needs is a documented match |
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| Dell UltraSharp 32 4K Thunderbolt Hub Monitor | None of these needs is a documented match |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
BenQ RD Series 28-inch Programming Monitor
Fit more rows of code or documents
See price & reviews on AmazonDell UltraSharp 32 4K Thunderbolt Hub Monitor
Like a larger screen in 16:9
See price & reviews on AmazonEach link opens in a new tab.
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