Dell S2725QS 27-inch 4K Monitor vs LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
The Dell S2725QS and LG UltraGear 27GX704A-B address different workloads. The Dell offers a 4K IPS workspace; the LG offers a QHD OLED panel at 240Hz. This is a specification-based comparison, not a side-by-side measurement. Color gamut does not establish color accuracy, and neither display should be chosen for professional color work without checking calibration and the required color space.
Compare the Full Reviews
Resolution and text
Dell S2725QS 27-inch 4K Monitor
- 3840 × 2160 IPS in a 27-inch format
- Higher pixel density for text and workspace detail
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- 2560 × 1440 OLED in a 27-inch-class format
- Lower resolution, with OLED subpixel and static-content considerations
What this means: Dell is the clearer starting point for text-heavy work; actual scaling and viewing distance still matter.
Gaming and motion
Dell S2725QS 27-inch 4K Monitor
- Dell specifies up to 120 Hz at 4K over supported HDMI or DisplayPort connections
- Match the refresh mode to the source and connection
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- LG specifies 240Hz and 0.03ms GtG
- G-SYNC Compatible and FreeSync Premium Pro support compatible setups
What this means: LG has the higher documented refresh ceiling. Manufacturer response time is not a Pickora input-lag measurement.
Color and HDR
Dell S2725QS 27-inch 4K Monitor
- IPS LCD; verify the exact color-space mode and calibration for your workflow
- Factory color accuracy has not been independently measured for this model
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- LG specifies DCI-P3 98.5% and DisplayHDR True Black 400
- OLED provides per-pixel light control; gamut coverage is not calibration accuracy
What this means: LG has a stronger documented HDR-oriented feature set. No measured color-accuracy winner is established.
Room and ownership
Dell S2725QS 27-inch 4K Monitor
- A practical candidate for prolonged static desktop work
- Compare the current price on each product page
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- Glossy reflections depend on lighting
- Consider static-content exposure and OLED care
What this means: Choose by workload and room lighting, then compare current offers. Neither model is automatically the better value.
Connections and extras
Dell S2725QS 27-inch 4K Monitor
- Two HDMI ports and one DisplayPort; no USB-C and no USB hub
- Built-in speakers
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- HDMI 2.1 and DisplayPort, plus a small hub with two USB-A ports
- No built-in speakers
What this means: Dell if you want speakers without extra hardware; LG if you want USB ports on the monitor. Neither offers single-cable USB-C laptop charging; Dell’s S2725QC variant adds USB-C.
What independent testing adds
Dell S2725QS 27-inch 4K Monitor
- RTINGS: sharp 4K text and enough brightness for most lit rooms
- Stand adjusts easily but wobbles
LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor
- RTINGS: very low input lag and near-instant response
- Reflections in sunny rooms and visible VRR flicker
What this means: The measurements confirm the split: Dell for desk work, LG for gaming in a dim room.
Specification and Decision Table
| Specification | Dell S2725QS 27-inch 4K Monitor | LG UltraGear 27GX704A-B 27-inch QHD OLED Gaming Monitor |
|---|---|---|
| Panel / size | 27-inch IPS | 27-inch-class OLED |
| Resolution | 3840 × 2160 | 2560 × 1440 |
| Refresh ceiling | 120 Hz (Dell specification) | 240Hz (LG specification) |
| Color coverage | 99% sRGB (Dell rating) | DCI-P3 98.5% (LG rating) |
| Primary fit | Text and mixed productivity | Gaming and media in controlled lighting |
Which One Fits Which Buyer?
- Text-heavy work: Dell S2725QS — 4K resolution is a practical advantage for a desktop workspace.
- QHD OLED gaming: LG 27GX704A-B — 240Hz and per-pixel light control are documented reasons to shortlist it.
Final Verdict
Choose Dell when a sharper 4K desktop is the priority. Choose LG when 240Hz QHD OLED gaming and per-pixel HDR contrast matter more than office-first convenience. Professional color workflows need their own calibration checks. Compare the actual price, warranty and exact model before buying.
Sources
Frequently Asked Questions
Is the Dell S2725QS or LG 27GX704A-B better for gaming?
The LG. Its 240Hz OLED panel has far faster response and lower input lag. The Dell’s 120Hz is fine for casual and console play at 4K.
Which is better for office work and text?
The Dell. Its 4K resolution renders text more sharply on a 27-inch screen, its matte finish handles bright rooms better, and LCD has no burn-in concern with static windows.
Can either monitor charge a laptop over USB-C?
No. Neither has a USB-C input. Dell’s S2725QC variant adds USB-C for single-cable laptop connection.