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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Accelerated Longevity Test
    3. Stand
    4. Back
    5. Borders
    6. Thickness
    7. Build Quality
  5. Picture Quality
    1. Contrast
    2. Blooming
    3. Lighting Zone Transitions
    4. Contrast And Dark Details In Game Mode
    5. HDR Brightness
    6. HDR Brightness In Game Mode
    7. PQ EOTF Tracking
    8. SDR Brightness
    9. Color Gamut
    10. Color Volume
    11. Local Dimming
    12. Pre Calibration
    13. Post Calibration
    14. Gray Uniformity
    15. Black Uniformity
    16. Viewing Angle
    17. Reflections
    18. Local Dimming In Game Mode
    19. HDR Native Gradient
    20. Low-Quality Content Smoothing
    21. Upscaling: Sharpness Processing
    22. Pixels
    23. 720p Input
    24. 1080p Input
    25. 4k Input
    26. 8k Input
    27. Temporary Image Retention
    28. Permanent Burn-In Risk
  6. Motion
    1. Response Time
    2. Flicker-Free
    3. Black Frame Insertion (BFI)
    4. Motion Interpolation
    5. Stutter
    6. 24p Judder
    7. Variable Refresh Rate
  7. Inputs
    1. Input Lag
    2. Supported Resolutions
    3. PS5 Compatibility
    4. Xbox Series X|S Compatibility
    5. Inputs Specifications
    6. Input Photos
    7. Total Inputs
    8. Audio Passthrough
  8. Sound Quality
    1. Frequency Response
    2. Distortion
  9. Smart Features
    1. Interface
    2. Ad-Free
    3. Apps and Features
    4. Remote
    5. TV Controls
    6. In The Box
    7. Misc
  10. Comments

LG CX OLED vs TCL 6 Series/R646 2021 QLED

Side-by-Side Comparison

Products

LG CX OLED
TCL 6 Series/R646 2021 QLED

Tested using Methodology v1.6

Updated Apr 16, 2025 03:25 PM

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Tested using Methodology v1.11

Updated Apr 16, 2025 03:21 PM

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LG CX OLED Picture
TCL 6 Series/R646 2021 QLED Picture

Variants

  • OLED48CXPUB (48")
  • OLED55CXPUA (55")
  • OLED65CXPUA (65")
  • OLED77CXPUA (77")
  • 55R646 (55")
  • 65R646 (65")
  • 75R646 (75")

Our Verdict

LG CX OLED

TCL 6 Series/R646 2021 QLED

The LG CX OLED is better overall than the TCL 6 Series/R646 2021 QLED, but they use different panel technologies, each with advantages and disadvantages. The LG has an OLED panel with a near-infinite contrast, perfect black uniformity, and wide viewing angles. On the other hand, the TCL uses an LED panel that gets much brighter and doesn't suffer from the risk of permanent burn-in. Even though they each have HDMI 2.1 inputs and VRR support, the LG has a wider VRR range that allows it to go below 20Hz. The LG also has a much quicker response time for smoother motion.

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