VIZIO Quantum Pro QLED 4K TV (2023) vs TCL Class S4 4K LED Smart TV (S4 / S450G)
VIZIO Quantum Pro QLED 4K TV (2023) vs TCL Class S4 4K LED Smart TV (S4 / S450G): which is the right fit? We cover performance, value, and use cases to make the call easier.
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VIZIO Quantum Pro QLED 4K TV (2023)

TCL Class S4 4K LED Smart TV (S4 / S450G)
Comparison: VIZIO Quantum Pro QLED 4K TV (2023) vs TCL Class S4 4K LED Smart TV (S4 / S450G)

VIZIO Quantum Pro QLED 4K TV (2023)

TCL Class S4 4K LED Smart TV (S4 / S450G)
| Criterion | VIZIO Quantum Pro QLED 4K TV (2023) | TCL Class S4 4K LED Smart TV (S4 / S450G) |
|---|---|---|
| Rating | ★4.2(1,534)Amazon | ★4.5(1,708)Amazon |
Screen Size | 65" / 75" | 43" / 50" / 55" / 58" / 65" / 75" / 85" |
Resolution | 4K (3840 x 2160) | 4K (2160p / 3840 x 2160) |
Screen Type | QLED LCD (IPS-type / ADS Panel) | LED LCD (Direct-lit LED backlight; typically VA panel) |
Refresh Rate | 120 Hz native (Supports up to 240Hz @ 1080p for PC) | 60 Hz native (Motion Rate 120) |
Processor | IQ Ultra+ Processor | Quad Core Processor 4K |
Upscaling | Spatial Scaling Engine | 4K Upscaling |
HDR Formats | Dolby Vision, HDR10+, HDR10, HLG | Dolby Vision, HDR10, HLG (No HDR10+) |
Peak Brightness | ≈1,000 nits (Marketed); ≈750-800 nits (HDR Real Scene tested) | ≈250 nits (SDR/HDR Real Scene) – Limited brightness |
Local Dimming | Yes (Active Full Array; 40 zones on 65"; 80 zones on 75") | No |
Contrast | ≈1,600:1 (Native) – Low native contrast due to IPS panel | High native contrast (≈5000:1 to 8000:1 depending on size/unit) |
Color Gamut | ≈97% DCI-P3 (Quantum Color) | Standard (≈75% DCI-P3); No Wide Color Gamut |
HDMI Ports | 4x HDMI | 3x HDMI |
HDMI 2 1 | Partial (Only HDMI 3 supports 4K@120Hz; HDMI 1 is eARC but 4K@60Hz) | No (HDMI 2.0 bandwidth on all ports); eARC supported on HDMI 1 |
VRR | Yes (AMD FreeSync Premium Pro, HDMI Forum VRR; 48-120Hz) | No |
Allm | Yes (Auto Low Latency Mode) | Yes (Auto Low Latency Mode) |
Input Lag | ≈14 ms @ 60Hz; ≈6 ms @ 120Hz | ≈11 ms @ 4K 60Hz (Game Mode) |
Audio Channels | 2.0 Channel | 2.0 Channel |
Audio Power | 20 W (10W x 2) | 20 W (10W + 10W); 30 W (15W + 15W) on 85-inch model |
Audio Features | DTS:X; DTS Virtual:X; Dolby Atmos (Passthrough); Bluetooth Headphone capable | Dolby Atmos pass-through; DTS Virtual:X; Dolby Digital Plus |
Smart Platform | VIZIO Home (formerly SmartCast) | Google TV (Android TV) |
App Store | VIZIO Home (Cloud-based apps, no local store) | Google Play Store |
Voice Assistants | VIZIO Voice (Built-in to remote); Works with Alexa/Google/Apple Home | Google Assistant (Built-in); Works with Amazon Alexa |
Casting | Apple AirPlay 2; Chromecast Built-in | Chromecast Built-in; Apple AirPlay |
Connectivity | Wi-Fi 6E (Tri-band 802.11ax); Bluetooth 5.2; Ethernet (LAN); USB 2.0 | Wi-Fi 5 (802.11ac); Bluetooth 5.0; Ethernet (LAN); Optical Audio Out |
Tuner | ATSC 1.0 (Digital) / Clear QAM (No ATSC 3.0) | ATSC 1.0 / Clear QAM |
Vesa | 400 x 300 mm (65"/75") | 200x200 mm (43"/50"/55"); 300x300 mm (58"); 400x300 mm (65"); 400x400 mm (75"); 600x400 mm (85") |
Dimensions With Stand | 65": 56.9 x 35.5 x 12.7 in; 75": 65.7 x 40.5 x 13.4 in | 55": 48.3 x 29.8 x 10.1 in; 65": 57.0 x 34.7 x 11.6 in; 75": 65.7 x 39.8 x 13.5 in |
Weight | 65": 41.0 lbs; 75": 59.8 lbs (with stand) | 55": 22.5 lbs; 65": 30.6 lbs; 75": 50.1 lbs (with stand) |
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VIZIO Quantum Pro QLED 4K TV (2023)
✓ Pros:
- • Integrated Wi-Fi 6E (Tri-band) provides faster streaming speed than most competitors
- • IPS-type panel delivers wide viewing angles suitable for large group seating
- • High peak brightness (~800 nits real scene) combats glare effectively in bright rooms
- • Gaming port (HDMI 3) is separate from eARC port (HDMI 1), preserving functionality
✗ Cons:
- • Low native contrast causes blacks to appear gray in dark rooms (IPS characteristic)
- • Only one HDMI port supports 4K@120Hz (limiting for multi-console owners)
- • Local dimming zone count is low (40/80 zones), leading to noticeable blooming
- • VIZIO Home interface is heavy on ads and can feel sluggish compared to Google TV/Roku
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TCL Class S4 4K LED Smart TV (S4 / S450G)
✓ Pros:
- • Excellent native contrast ratio produces deep blacks (VA panel)
- • Google TV interface is fast, modern, and app-rich
- • Supports Dolby Vision and Dolby Atmos (rare at this price point)
- • Very low input lag (~11ms) makes it decent for casual gaming
✗ Cons:
- • Low peak brightness (~250 nits) means HDR content lacks 'pop'
- • No local dimming to improve dark scene performance further
- • Narrow viewing angles (picture washes out from the side)
- • Limited to 60Hz with no VRR or HDMI 2.1 bandwidth for next-gen consoles
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Which one is better?
Looking at user satisfaction (TCL Class S4 4K LED Smart TV (S4 / S450G): 4.2★ vs VIZIO Quantum Pro QLED 4K TV (2023): 4.5★), TCL Class S4 4K LED Smart TV (S4 / S450G) pulls ahead. The gap is small—choose based on the priorities below.
Who should buy each?
Choose VIZIO Quantum Pro QLED 4K TV (2023) if:
- You want Integrated Wi-Fi 6E (Tri-band) provides faster streaming speed than most competitors, IPS-type panel delivers wide viewing angles suitable for large group seating
- Rating: 4.2★ (1534 reviews)
Choose TCL Class S4 4K LED Smart TV (S4 / S450G) if:
- You prefer Excellent native contrast ratio produces deep blacks (VA panel), Google TV interface is fast, modern, and app-rich
- Rating: 4.5★ (1708 reviews)
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Frequently Asked Questions
+Which has better value?
VIZIO Quantum Pro QLED 4K TV (2023) excels if you value integrated wi-fi 6e (tri-band) provides faster streaming speed than most competitors. TCL Class S4 4K LED Smart TV (S4 / S450G) is better if you prioritize excellent native contrast ratio produces deep blacks (va panel). Pick based on your budget and daily use.
+Is this an independent review?
Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.
+Do newer models exist?
Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.
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