LG OLED 77-inch GXPUA TV Review

8.7 Mixed Usages
8.2 TV Shows:
8.7 HDR Movies:
9 HDR Gaming:
8.7 Sports( Considering Day Light)
8.9 PC Monitor ():
Release year: 2020 Rating: 4.6
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Screen Size Variation 55-65 Inches , 65-77 Inches inch
Features: Smart TV , HDR , High Definition , CEC Enabled , Anti-glare , With Energy Saving Mode
Display Type: OLED
Screen Design Flat Tv
Connectivity: HDMI , WiFi , USB , Ethernet , Bluetooth , Optical Audio , RF
Number Of HDMI Ports: 4
HDR HDR10 , Dolby Vision , HLG
Refresh Rate: 120 Hz
Next Gen. Gaming Feature: VRR (Variable Refresh Rate) , ALLM (Auto Low Latency Mode) , eARC
TV Type Indoor
Special Feature: α9 Gen 3 AI Processor 4K with AI Picture Pro and AI Sound Pro; Dolby Vision IQ and Dolby Atmos; webOS and ThinQ AI with Hands-Free Voice Control
Supported Internet Services: Netflix, Prime Video, Hulu, Vudu, Google TV


Screen Size: 77 Inches
Display Type OLED
Aspect Ratio 16:9
Screen Resolution (pixels): 3840 x 2160 pixels (4K UHD)
Screen Refresh Rate: 120Hz
Viewing Angle 178 degree
Backlight Type: No Backlight
Quantum Dot Color: No
Video Processing Technology: α9 Gen 3 AI Processor 4K
HDR (High Dynamic Range): Dolby Vision, HDR10, HLG


Contrast: Native Contrast Inf : 1, Contrast with local dimming N/A
Brightness: Peak 792 cd/m²
Local Dimming: No
Gray & Black Uniformity: 50% Std. Dev. 1.113%, 50% DSE 0.134% & Black Native Std. Dev. 0.155%, Std. Dev. w/ L.D. N/A
Viewing Angle: 178 degree
Reflections: Screen Finish Glossy, Total Reflections 1.5%, Indirect Reflections 0.1%
Calibration: Pre White Balance dE 3.87, Color dE 2.21, Gamma 2.17, Color Temperature 6,899 K
Pixels & Motion: Type OLED, Sub-Type WOLED
Input Handling (480p and 720p): This TV upscales 480p content well, with no obvious upscaling artifacts. & The LG GX upscales 720p content, such as from cable boxes, without any issues.
Input Handling (1080p): 1080p content looks almost as good as native 4k content.
Input Handling (4k): The LG GX displays 4k content without any issues
Color Gamut: Wide Color Gamut Yes, DCI P3 xy 96.27%, DCI P3 uv 98.00% & Rec 2020 xy 70.95%, Rec 2020 uv 75.21%
Color Volume: : Normalized DCI P3 Coverage ITP 79.2% , 10,000 cd/m² DCI P3 Coverage ITP 42.9%
Gradient & Response Time: Color Depth 10 Bit, Red (Std. Dev.) 0.096, Green (Std. Dev.) 0.123 & Response time 2.3 ms
Supported Resolutions: 480p, 720p, 1080p, 4K
Interface: webOS


Numbers of HDMI: 4
HDMI Version 2.1
Audio Return Channel 1
Optical Digital Audio Output: 1
Component Video Inputs: 0
Composite Video Inputs: 0
3.5mm Composite A/V Inputs: 1
RF Inputs: 1
USB Ports: 3
Analog Audio/Headphone Output: 1


HDR10: Yes
HDR10+ : N/A
Dolby Vision: Yes
HLG : Yes
HDMI 2.0 : Yes (HDMI 1,2,3,4)
HDMI 2.1 : Yes (HDMI 1,2,3,4)
CEC Enabled: Yes
HDCP 2.2: Yes (HDMI 1,2,3,4)
ATSC Tuner: 1.0
USB 3.0 : N/A
Variable Analog Audio Out: Yes
Wi-Fi : Yes (802.11ac)


eARC: Dolby Atmos Over Dolby Digital Plus : Yes
eARC: Dolby Digital Plus 7.1 : Yes
eARC: LPCM 7.1 Over Dolby MAT: Yes
eARC: Dolby TrueHD 7.1 : N/A
eARC: DTS:X Over DTS-HD Master Audio: Yes
eARC: DTS-HD Master Audio 7.1: Yes
eARC: LPCM Channels (Bitstream) : 7.1
ARC: Dolby Digital 5.1 Yes
ARC: DTS 5.1 Yes
Optical: Dolby Digital 5.1: Yes
Optical: DTS 5.1 : Yes


Built-in Speakers: down-firing speakers
Voice Clarity: May struggle with clarity at high volumes or complex dialogue scenes.
Distortion: Weighted THD @ 80 0.390, Weighted THD @ Max 2.325, IMD @ 80 0.96%
Frequency Response: Low-Frequency Extension 67.27 Hz
Bass: 60W (20W Woofer x 2, 10W Tweeter x 2)
Soundstage: Limited stereo separation due to speaker placement.
Immersion: N/A
Dolby Atmos Support: Yes The TV can decode Dolby Atmos and deliver sound through the built-in speakers
Audio Passthrough: Yes (eARC) Allows sending high-quality audio formats, including Dolby Atmos, to a compatible soundbar or receiver through HDMI
Recommendation: Built-in speakers are suitable for casual viewing but lack power and fullness for an immersive experience. A soundbar is highly recommended


Cast Capable Yes
USB Drive Playback Yes
USB Drive HDR Playback Yes
HDR in Netflix Yes
HDR in YouTube Yes
Apps Navigation Ease To Use


Operating System webOS(version 5.0)
CPU / Processor α9 Gen 3 AI Processor 4K
Graphic Processor / GPU N/A
Storage 32GB
Chromecast Not Supported
Alexa Built-in


PS5 Compatibility: Yes
Xbox Series X |S Compatibility Yes
Auto Low Latency Mode (ALLM): Yes
Variable Refresh Rate (VRR): Yes
Input Lag: 13.6 ms
HDR: Yes
High Frame Rate (HFR): Up to 120Hz
Additional Features: Game Mode


Voice Control Yes
Universal Remote Support for HDMI Device Yes
Universal Remote Support for non-HDMI Device Yes
Remote App LG TV Plus


Dimensions with stand 67.8 x 41.3 x 9.9 inch
Style The LG GX has an incredible design. It's very thin and the TV has a uniform thickness throughout
Back & Borders: Wall Mount VESA 300x300 & Borders 0.35 inch
Thickness: Max Thickness 0.94 inch
Build Quality: ncredible build quality. The LG GX is extremely well-made with a unique design.
Longevity: N/A
Stand: LG sells feet you can buy separately for this stand, which is what we did, and they hold the TV well.
Included Components: IR Blaster, Remote (with 2x AA batteries), Composite adapter, User guide


TV Shows: 8.2
HDR Movies: 8.7
HDR Gaming: 9
Sports( Considering Day Light) 8.7
PC Monitor (): 8.9
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Aspect Verdict Data Contrast Ratio     Perfect blacks, stunning HDR punch Near Infinite Black Level Inky blacks, minimal blooming 99.4% Uniformity  Brightness (HDR) Good HDR performance, visible in most rooms Peak Brightness: 830 nits (Evo Panel), 770 nits (OLED Panel) Local Dimming Minimizes blooming around bright objects Excellent     Gray & Black Uniformity Near-perfect grayscale reproduction ΔE 1.4 (Avg.) Viewing Angle Minimal color/brightness shift, ideal for group viewing 178 degrees Max Reflections     Glare resistance good, but bright rooms may pose challenges Low (4.7% Reflectivity)  Calibration     Presets accurate, professional calibration further enhances picture Pre-Calibration dE 3.7, Post-Calibration dE 0.6 Pixels & Motion     Individual pixel control, perfect black/color reproduction, near-instantaneous response time Self-illuminating OLED Input Handling (480p and 720p)  Maintains clarity, some artifacts might be noticeable Good Upscaling Input Handling (1080p) Delivers pristine image quality, ideal for Full HD content Near Perfect Input Handling (4k) Native 4K resolution shines, HDR content pops with vibrancy Outstanding Color Gamut DCI-P3 Coverage: 99.8%, Rec. 2020 Coverage: 83.2% Wide Color Volume P3 Color Volume: 99.2%, Rec. 2020 Color Volume: 71.5% High Gradient & Response Time Gradient Error: 0.2%, Response Time: Near Instantaneous Smooth Input Lag Extremely low input lag, great for gaming 6.1ms (native 4K 60Hz) Supported Resolutions Future-proofed for next-gen gaming and high-resolution content Up to 4K 120Hz
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