1. The Workspace Stays Identical

Both monitors specify a 28.2-inch IPS panel, a 3840 × 2560 resolution, a 3:2 aspect ratio, and 164 PPI.

The practical takeaway is straightforward: at the same operating-system desktop scaling, they provide the exact same working canvas. Switching models will not, by itself, fit more lines of code, documentation windows, or terminal sessions on your screen.

Several useful desk features carry over as well:

  • Up to 90 W USB-C Power Delivery

  • Built-in KVM switching

  • USB-C MST output (daisy-chaining)

(Note: Charging speed depends on a compatible laptop and cable, while KVM and display-chain arrangements require host and OS support. These shared capabilities offer little reason to replace an RD280U that already functions smoothly with your current setup.)

2. What 120 Hz Changes While You Code

The RD280UG pushes its maximum refresh rate to 120 Hz, while BenQ lists 60 Hz for the RD280U over DisplayPort or USB-C.

  • The Refresh Interval: At 120 Hz, the nominal interval between refreshes drops to about 8.33 ms(compared to 16.67 ms at 60 Hz). These figures describe refresh opportunities rather than measured input latency or pixel response time.

  • The Coding Benefit: When your computer and applications support the higher refresh rate, scrolling through long files, moving your pointer, and dragging windows appears noticeably smoother and more fluid.

  • The Reality Check: This motion smoothness does not establish that you will write code faster or gain a direct health benefit. Furthermore, reaching native 120 Hz at full 3840 × 2560 resolution over DisplayPort 1.4, HDMI 2.1, or USB-C requires full compatibility from your graphics output, driver, cable, and selected display mode. (If you use Picture-by-Picture split-screen modes, note that those configurations do not support FreeSync.)

3. The Stand: Portrait Pivot and Greater Height Travel

The included stand is often where physical upgrades prove most tangible:

  • RD280UG: Offers 90-degree pivot rotation into portrait mode and 150 mm of height adjustment.

  • RD280U: Provides 110 mm of height adjustment and no pivot rotation on its supplied stand.

If portrait orientation is a core part of your workflow (such as reading long logs or vertical documentation), that is a concrete reason to prefer the RD280UG. Its wider height adjustment range also gives you more flexibility in positioning. However, if you work exclusively in landscape and use a separate monitor arm, the differences in the supplied stands matter much less.

4. USB Hub Layout: Faster Links, But Fewer Type-A Ports

The downstream USB hub configuration has been rebalanced:

  • RD280UG: Two Type-A and two Type-C downstream ports, rated at 10 Gbps.

  • RD280U: Three Type-A and one Type-C downstream port, rated at 5 Gbps.

The newer model trades one Type-A socket for a second Type-C socket. While this suits a modern, Type-C-heavy desk layout, an existing RD280U owner currently using three Type-A peripherals will lose a direct connection. Additionally, both models share a 5 Gbps USB-B upstream connection, meaning downstream speeds are ultimately constrained by your host connection and lane configuration.

5. Other Refinements: Contrast and Specifications

BenQ rates native contrast at 2000:1 for the RD280UG, compared to 1200:1 for the RD280U. Both specify 350 nits of typical brightness and 400 nits HDR peak brightness. While a higher static contrast ratio is welcome—especially for dark-mode coding environments—manufacturer specifications are not a substitute for a matched, real-world black-level test.

The Upgrade Decision

  • Keep your RD280U if: Its workspace, 60 Hz motion, and stand positioning already meet your needs, and you rely on having three Type-A USB ports.

  • Choose the RD280UG if: Smoother 120 Hz scrolling, built-in portrait rotation, and a Type-C-focused USB hub solve concrete daily limitations in your development setup.

(Note: Availability and exact regional specifications should always be verified against your local BenQ store listings before purchasing.)