LG 27G850A-B 27-inch Ultragear 4K UHD (3840 x 2160) IPS Gaming Monitor
Bottom line: The LG 27G850A-B 27-inch Ultragear 4K UHD IPS Gaming Monitor: Dual-Mode switching: 4K UHD at 240Hz or Full HD at 480Hz via a single hotkey; main trade-off: 480Hz mode drops to 1080p, which looks soft stretched across a 27-inch panel.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Dual-Mode switching: 4K UHD at 240Hz or Full HD at 480Hz via a single hotkey
- ✓ Nano IPS Black panel with up to 99% DCI-P3 coverage and 10-bit color depth
- ✓ VESA DisplayHDR 600 certified with 600-nit peak brightness
- ✓ DisplayPort 2.1 plus two HDMI 2.1 ports for PC and console hookups
- ✓ 1ms GtG response, G-Sync Compatible and FreeSync Premium Pro VRR
Cons
- ✗ 480Hz mode drops to 1080p, which looks soft stretched across a 27-inch panel
- ✗ Driving 4K at 240Hz takes a high-end GPU to get full use of the refresh rate
- ✗ IPS panel, even Nano IPS Black, still falls short of OLED black levels
- ✗ USB hub is limited to USB 3.2 Gen1 with just 2 downstream ports
Manufacturer description
Next-Level Gaming with 4K UHD & Nano IPS Black - Unleash next-gen gaming with the UltraGear's irst Nano IPS Black monitor. Play in razor-sharp 4K UHD at 240Hz or switch to blistering 480Hz in Full HD. With 1ms GtG response and DisplayPort 2.1, every frame is pure speed, precision, and power. 4K UHD: Nano IPS Black and HDR 600 Deliver Phenomenal Visuals - Dive into 4K UHD with Nano IPS Black and HDR600 for visuals that captivate. With up to 99% DCI-P3 color and deeper blacks, every scene comes alive with stunning clarity and contrast—elevating your gaming to new levels of excitement. Dual…
SpecPicks Verdict
SpecPicks scored LG 27G850A-B 27-inch Ultragear 4K UHD (3840 x 2160) IPS Gaming… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the gaming monitors category. LG's gaming monitors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Next-Level Gaming with 4K UHD & Nano IPS Black - Unleash next-gen gaming with the UltraGear's irst Nano IPS Black monitor. Play in razor-sharp 4K UHD at 240Hz or switch to blistering 480Hz in Full HD. With 1ms GtG response and DisplayPort 2.1, every frame is pure speed, precision, and power.
- 4K UHD: Nano IPS Black and HDR 600 Deliver Phenomenal Visuals - Dive into 4K UHD with Nano IPS Black and HDR600 for visuals that captivate. With up to 99% DCI-P3 color and deeper blacks, every scene comes alive with stunning clarity and contrast—elevating your gaming to new levels of excitement.
- Dual Mode: UHD at 240Hz or Full HD at 480Hz - Dual Mode lets you take full control. Enjoy graphically stunning story-driven adventures in UHD at up to 240Hz, immersing yourself in stunning visuals and rich detail. Or switch to Full HD at an electrifying 480Hz for ultra-responsive gameplay in FPS, MOBA, or racing titles. With a simple hotkey, you decide: resolution for beauty or speed for the win.
- 1ms (GtG): Astounding Gaming Speed - Play with a near-instantaneous 1ms response time, which minimizes ghosting for gaming visuals that are sharp, clear and buttery smooth.
- Serious Connectivity for Serious Gamers - DisplayPort 2.1 delivers ultra-fast data speeds for flawless high refresh rate gameplay. Enjoy sharper visuals with higher resolution support, virtually zero lag, and instant responsiveness, giving you the edge to dominate. The monitor also has two HDMI 2.1 ports and USB 3.2 Gen1 (1 upstream / 2 downstream)
- NVIDIA G-SYNC Compatible - NVIDIA G-SYNC compatibility ensures tear-free, stutter-free gaming with variable refresh rate (VRR) technology. Optimized for NVIDIA GPUs, it delivers smooth, precise performance in every frame—no dedicated G-SYNC module required.
Full Specifications
| Size | 27 inches |
|---|---|
| Brand | LG |
| Color | Black |
| Model | 27G850A-B.AUS |
| Warranty | 1 Year Manufacturer |
| UnitCount | 1 |
| ReleaseDate | 2024-01-30T00:00:01Z |
| Manufacturer | LG Electronics Inc. |
| ItemPartNumber | 27G850A-B.AUS |
| Full listing title | LG 27G850A-B 27-inch Ultragear 4K UHD (3840 x 2160) IPS Gaming Monitor, Dual-Mode 240Hz, 1ms, NVIDIA G-Sync Compatible, AMD FreeSync Premium Pro, VESA DisplayHDR 600, HDMI, DisplayPort 2.1, Black |
Ready to buy?
LG 27G850A-B 27-inch Ultragear 4K UHD (3840 x 2160) IPS Gaming Monitor, Dual-Mode 240Hz, 1ms, NVIDIA G-Sync Compatible, AMD FreeSync Premium Pro, VESA DisplayHDR 600, HDMI, DisplayPort 2.1, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Gaming Monitors
LG 27G850A-B 27-inch Ultragear 4K UHD head-to-head
Side-by-side specs, prices, and a pick for each matchup — no tab-switching.
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- Best Gaming Headset for PlayStation 5 Under $80 (2026)
- Best Mouse Pad for Office Productivity and Long Hours (2026)
- 'Count Anything' AI Model Does Object Counting — Harder Than It Sounds
- AMD Ryzen AI Max+ 395: The 128GB Mini PC Running 70B LLMs Locally
- Best Budget Streaming & Content-Creation Gear in 2026: 5 Picks That Punch Above Their Price
- Raspberry Pi Projects for Beginners: 6 No-Solder Builds
- Forza Horizon 6 on Steam Deck: Best Dock and Controller Setup for 2026
- Ryzen 7 5800X3D vs Core i7-14700K: The DDR4 Gaming Faceoff for 2026 Builders
- Ryzen 5 5600G vs Ryzen 7 5700X: Which for a Budget 1080p Build?
- IPEX-LLM + Ollama vs a CUDA RTX 3060 Rig
- Logitech G502 HERO vs G29: Which Logitech Peripheral Belongs in Your Sim Rig?
- Add Wireless Controllers and More Games to Your SNES Classic & Genesis Mini in 2026
- Intel Arc A770 LLM Performance: Local Inference Guide
- Why Nvidia Killed 3dfx — and How Voodoo Still Shapes Every GPU Launch
- Build a Silent Raspberry Pi 5 NAS with NVMe and Active Cooling in 2026
- AMD Ryzen 7 5800X + RTX 5060 Combo Hits $439 With Free Cooler
- Build a Raspberry Pi 4 NAS With an SSD in 2026
- Best Budget Gaming CPUs for 1080p in 2026
- Open-WebUI on an RTX 3060: A Self-Hosted ChatGPT in 2026
- Retro PC storage in 2026: CompactFlash-to-IDE vs a SATA SSD for Win98/XP
- RTX 3060 vs RTX 5060 Ti — two generations apart
- PebbleOS Comes to the Raspberry Pi RP2350: What the Port Means for Tinkerers
- Best Retro-PC Storage & Drive-Imaging Kit in 2026: 5 Picks
- Ryzen 5 2600 vs Ryzen 7 5800X: Is the AM4 Upgrade Worth It?
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090