LG 32GX870A-B 32-inch Ultragear 4K UHD (3840 x 2160) OLED Gaming Monitor, Dual-Mode, 240Hz, 0.03ms, NVIDIA, AMD FreeSync Premium Pro, VESA DisplayHDR True Black 400, USB Type-C, DP2.1
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
This 31.5-inch 4K OLED monitor with 240Hz and 0.03ms response is for gamers prioritizing visual fidelity and speed, despite its DisplayPort 2.1 limitation.
The 31.5-inch 4K OLED panel with 240Hz and 0.03ms response time is a strong offering for gaming, but the DisplayPort 2.1 implementation (UHBR 13.5) requiring DSC for 4K 240Hz 10-bit limits its 'best-in-class' potential for some users. The dual-mode functionality is a unique selling point for different gaming scenarios.
If native 4K 240Hz without DSC is critical, look for monitors with full DisplayPort 2.1 UHBR 20.
Regret Score™
Low RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Dual-mode functionality allows switching between 4K 240Hz and Full HD 480Hz via hotkey.
- Features a nearly instantaneous 0.03ms (GtG) response time.
- Supports both NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro for tear-free gaming.
- Achieves up to 1300 nits peak brightness and a 1.5M:1 contrast ratio with VESA DisplayHDR True Black 400.
- The stand provides height, tilt, swivel, and pivot adjustments for ergonomic flexibility.
- Includes DisplayPort 2.1, two HDMI 2.1 ports, and a USB Type-C port with 90W power delivery.
Cons
- DisplayPort 2.1 implementation is UHBR 13.5, requiring Display Stream Compression (DSC) for 4K 240Hz 10-bit.
- Some users report flickering issues in multi-monitor setups, especially with DisplayPort 2.1.
- Reports indicate the monitor can have issues waking from sleep.
- The USB-C port's DisplayPort Alt Mode or KVM functionality is not explicitly confirmed.
Dimension Scores
The OLED panel, 1.5M:1 contrast ratio, 1300 nits peak brightness, and VESA DisplayHDR True Black 400 certification provide exceptional visual fidelity.
Dual-mode 4K 240Hz or Full HD 480Hz with a 0.03ms (GtG) response time is top-tier for gaming performance.
Includes 2x HDMI 2.1, 1x DisplayPort 2.1, and USB Type-C with 90W PD, but the DP 2.1 is UHBR 13.5, requiring DSC for 4K 240Hz 10-bit.
The stand offers height, tilt, swivel, and pivot adjustments, providing extensive flexibility for positioning.
Best For
- Competitive gamers needing high refresh rates and extremely low response times.
- Gamers wanting a 31.5-inch 4K OLED panel for rich, high-contrast visuals.
- Users with DisplayPort 2.1 capable GPUs seeking high bandwidth connectivity for single-monitor setups.
Not Recommended For
- Users with multi-monitor setups sensitive to DisplayPort 2.1 DSC issues.
- Budget-conscious buyers, given its premium price band.
- Users expecting native 4K 240Hz 10-bit without DSC over DisplayPort 2.1.
Watch Out For
- The DisplayPort 2.1 is UHBR 13.5, which still requires Display Stream Compression (DSC) for 4K 240Hz 10-bit, unlike full UHBR 20.
- Some users experienced flickering and wake-from-sleep issues, especially in multi-monitor configurations.
- The USB-C port provides 90W power delivery but lacks explicit mention of DisplayPort Alt Mode or KVM functionality.
Full Specifications
| ASIN | B0F14PFFPS |
| Brand | LG |
| Color | Black |
| Series | 32GX870A-B.AUS |
| Resolution | 4K UHD 2160p |
| Item Weight | 21.6 pounds |
| Screen Size | 31.5 Inches |
| Aspect Ratio | 16:9 |
| Manufacturer | LG Electronics Inc. |
| Item model number | 32GX870A-B.AUS |
| Screen Resolution | 3840x2160 |
| Product Dimensions | 9.83 x 28.11 x 24.44 inches |
| Max Screen Resolution | 3840 x 2160 Pixels |
| Item Dimensions LxWxH | 9.83 x 28.11 x 24.44 inches |
| Number of USB 3.0 Ports | 2 |
| Screen Surface Description | Matte |
| Standing screen display size | 31.5 Inches |
What Buyers Say
Reddit users have pointed out that while the monitor boasts DisplayPort 2.1, it's the UHBR 13.5 version, which means you still need Display Stream Compression for 4K 240Hz 10-bit, making the '2.1' claim less impactful for some. There are also reports of the monitor struggling to wake from sleep and flickering in multi-monitor setups, which is a concern for productivity or complex gaming rigs. The inclusion of built-in speakers and a 4-pole headphone jack is a practical addition, though their quality isn't detailed in user feedback.
“I bought this for the DP 2.1 but it still needs DSC for 4K 240Hz, which is annoying, and it sometimes flickers when I try to run my dual monitor setup. The picture is insane though.”
Common Praise
- Dual-mode functionality for switching between 4K 240Hz and FHD 480Hz is a practical feature.
- The 0.03ms (GtG) response time is extremely fast for competitive gaming.
- Deep blacks and bright highlights from the OLED panel with 1300 nits peak brightness.
- Comprehensive stand adjustments for personalized viewing.
Common Complaints
- DisplayPort 2.1 being UHBR 13.5 and requiring DSC for 4K 240Hz 10-bit.
- Issues with the monitor waking from sleep.
- Flickering in multi-monitor setups, particularly with DisplayPort 2.1.
- USB-C port lacks explicit DisplayPort Alt Mode or KVM confirmation.
Ownership Tips
- The 'Dual Mode' hotkey switch is genuinely useful for different game types.
- The anti-glare screen helps minimize reflections during use.
- The monitor's thin bezels contribute to an immersive feel.
- The 90W USB-C power delivery is convenient for charging laptops or other devices.
Frequently Asked Questions
Does this monitor have true DisplayPort 2.1?
It has DisplayPort 2.1, but it's UHBR 13.5, meaning it still uses Display Stream Compression (DSC) to achieve 4K 240Hz 10-bit.
What is the peak brightness?
The monitor has a peak brightness of up to 1300 nits.
Can I adjust the stand?
Yes, the stand allows for height, tilt, swivel, and pivot adjustments.
Does it have built-in speakers?
Yes, it features built-in speakers and a 4-pole headphone jack.
Is it compatible with G-Sync and FreeSync?
Yes, it is NVIDIA G-SYNC Compatible and supports AMD FreeSync Premium Pro.
What is the response time?
It has a 0.03ms (GtG) response time.
Buying Guide
When buying a high-refresh-rate 4K monitor, you need to understand that achieving the advertised refresh rates often depends on your graphics card's capabilities and the display interface. For OLED, look at peak brightness and VESA DisplayHDR certification for how well it handles HDR content. Pay close attention to user feedback regarding specific port implementations, especially for new standards.
Dual Mode (4K UHD 240Hz or Full HD 480Hz)
This lets you choose between incredibly sharp 4K visuals at a fast 240Hz for story games, or switch to a super-smooth 480Hz at 1080p for twitch-response competitive games, like having two monitors in one.
0.03ms (GtG) Response Time
This is how quickly pixels change color. A tiny number like 0.03ms means almost no ghosting or blur, making fast-moving objects in games look incredibly clear, giving you a competitive edge.
VESA DisplayHDR True Black 400 & 1300 nits peak brightness
This certification means the monitor can display truly deep blacks and very bright highlights, making HDR content pop with more realistic contrast and detail, especially in dark scenes.
Alternatives
If you need native 4K 240Hz without any Display Stream Compression, search for monitors explicitly stating full DisplayPort 2.1 UHBR 20 bandwidth. If multi-monitor stability is a top priority, look for user reviews specifically addressing those setups.
You Might Also Like
KTC H27S5C 27" Curved Gaming Monitor, 1440P QHD 144Hz 120Hz Monitor, 1500R HVA Panel, HDR400, Adaptive Sync, 400nits, HDMI 2.0 x2, DP 1.4, VESA 100x100 PC Monitor
$150-$299This is a 27-inch 1440p 144Hz curved HVA panel with 400 nits brightness and HDR400, designed for gamers and creative users needing color accuracy.
ASUS ROG Strix 32” 4K OLED Gaming Monitor (XG32UCWMG) - TrueBlack Glossy, Dual Mode(4K@240Hz, FHD@480Hz), 0.03ms, G-SYNC Compatible, Neo Proximity Sensor, USB-C, HDMI 2.1, 3 yr Warranty
$600+This 32-inch 4K 240Hz WOLED monitor with 0.03ms response and dual-mode FHD 480Hz is for serious gamers and content creators prioritizing visual fidelity and speed.
CRUA 32" White Curved Monitor, 4K UHD(3840*2160P) 1500R VA Screen, 75Hz Computer Monitor Supports AMD Freesync, 120% sRGB, Built-in speakers, Blue Light Filter,Wall Mountable Installs(HDMI 2.0/DP 1.4)
$150-$299This is a 32-inch 4K (3840x2160) 1500R VA curved monitor with a 75Hz refresh rate and 260 cd/m² brightness, best for casual media consumption and productivity.
CRUA 34 Inch Curved Gaming Monitor, 21:9 WQHD 3440x1440 165Hz/144Hz 1500R Ultrawide Computer Monitor Support Freesync, PIP/PBP, 120% sRGB, HDMI 2.0 & DP 1.4, Wall Mountable/Tilt Adjustable-Black
$150-$299A 34-inch 1500R curved 3440x1440 VA panel with 165Hz refresh, 300 cd/m² brightness, and a tilt-only stand.