Choosing the right gaming monitor can make or break your setup. Two monitors that consistently top Amazon searches are the LG 27GP850-B UltraGear and the ASUS ROG Swift PG279QM. Both target competitive and enthusiast gamers who want speed and image quality — but they take very different approaches. This comparison breaks down exactly which one belongs on your desk in 2026.
Quick Specs Comparison
| Spec | LG 27GP850-B | ASUS ROG Swift PG279QM |
|---|---|---|
| Panel Size | 27 inches | 27 inches |
| Resolution | 2560×1440 (QHD) | 2560×1440 (QHD) |
| Refresh Rate | 165Hz (OC: 180Hz) | 240Hz |
| Panel Type | Nano IPS | Fast IPS |
| Response Time | 1ms GtG | 1ms GtG |
| HDR Rating | DisplayHDR 400 | DisplayHDR 600 |
| Sync Tech | G-Sync Compatible / FreeSync Premium Pro | G-Sync Ultimate |
| Color Coverage | 98% DCI-P3 | 98% DCI-P3 |
| Ports | 2x HDMI 2.0, 1x DP 1.4, USB hub | 1x HDMI 2.0, 1x DP 1.4, USB hub |
| Price (approx.) | ~$349 | ~$699 |
Key Differences
Refresh Rate: The Biggest Gap
The PG279QM’s 240Hz refresh rate is its flagship feature — that’s 45% more frames per second than the LG’s 165Hz (or 180Hz overclocked). In fast-paced competitive shooters like Valorant, CS2, or Apex Legends, this translates to genuinely smoother motion and reduced input lag perception. For casual gamers or those playing slower genres, the difference is nearly imperceptible. For serious esports players, it’s meaningful.
HDR Performance
The ASUS PG279QM carries DisplayHDR 600 certification, capable of hitting 600 nits peak brightness — enough for HDR content to look noticeably more dynamic. The LG’s HDR400 certification is more modest at 400 nits. Neither panel uses full-array local dimming, so HDR falls short of OLED or mini-LED panels, but the ASUS has a clear edge for HDR gaming and media.
Sync Technology and GPU Compatibility
The LG is G-Sync Compatible and supports AMD FreeSync Premium Pro, making it a solid choice for both NVIDIA and AMD GPU owners without a hardware G-Sync module markup. The ASUS uses a full G-Sync Ultimate hardware module delivering ultra-low latency and variable overdrive. If you’re on NVIDIA with an RTX 4070 or higher, ASUS’s hardware G-Sync delivers a tighter tear-free experience. AMD users will get full benefits from the LG at a fraction of the cost.
Price-to-Performance Ratio
At roughly $349 vs $699, the LG 27GP850-B offers outstanding value. You get near-identical color accuracy, the same 1440p resolution, and highly competitive gaming performance — at half the price. The ASUS is genuinely a premium product, but the $350 premium primarily buys you the higher refresh rate and G-Sync Ultimate module, not dramatically better image quality.
Who Should Buy Each
Buy the LG 27GP850-B if:
- You want a high-performance 1440p gaming monitor under $400
- You use an AMD GPU and want full FreeSync Premium Pro support
- You play a variety of game genres and don’t need maximum refresh rate
- You need two HDMI ports for a console plus PC setup
Buy the ASUS ROG Swift PG279QM if:
- You play competitive shooters at the highest level and need 240Hz
- You have an NVIDIA GPU and want certified G-Sync Ultimate performance
- You want HDR600 peak brightness for gaming and media consumption
- Budget is not your primary concern and you want a flagship-tier panel
Our Verdict
For the vast majority of gamers, the LG 27GP850-B is the smarter buy. It delivers an excellent 1440p Nano IPS experience with 165Hz speed, great colors, and broad GPU compatibility at a price that leaves money in your pocket for the rest of your build. The ASUS ROG Swift PG279QM earns its premium price for esports-focused players whose GPU can reliably push 240fps in their main titles and who are invested in the NVIDIA ecosystem. Everyone else should save $350 and go with the LG.
Want to stack these up against other monitors? Use our compare tool to build your own side-by-side comparison. Also check out our MacBook Air M3 vs Dell XPS 13 Plus guide if you’re building a complete new workstation.
LG 27GP850-B on Amazon: Check current price
ASUS ROG Swift PG279QM on Amazon: Check current price