TCL Class S4 4K LED Smart TV (S4 / S450G) vs VIZIO Quantum Pro QLED 4K TV (2023)
The VIZIO Quantum Pro QLED 4K TV (2023) brings a premium experience, especially with its peak brightness of around 800 nits, ideal for bright rooms. In published testing, the TCL offers excellent contrast, but the VIZIO's performance in daylight situations can’t be ignored. Key specs: Refresh: 60 Hz vs 120 Hz and HDMI: 3 ports vs 4 ports.
Why compare these? The TCL Class S4 4K LED Smart TV (S4 / S450G) (budget-friendly) and VIZIO Quantum Pro QLED 4K TV (2023) (high-end) represent different approaches to tvs. While they may appeal to different budgets, many buyers consider both options. This 2026 comparison helps you decide if the differences justify the price gap.
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How We Compare These Products
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Sources Checked
Official specifications, Retailer ratings, Manufacturer documentation, Buyer feedback.
Decision Factors
We weigh panel technology, contrast, brightness, HDR support, gaming features, size value, and smart platform.
Editorial Standard
Research-based analysis from documented specs, published lab measurements, and verified-buyer evidence. Any hands-on note is labeled as such. Full methodology.
Key Differences at a Glance
| Aspect | TCL Class | VIZIO Quantum |
|---|---|---|
| User Rating | ✓4.5★ (1,771 reviews) | 4.2★ (1,606 reviews) |
| Top Strength | Excellent native contrast ratio produces deep blacks (VA panel) | Integrated Wi-Fi 6E (Tri-band) provides faster streaming speed than most competitors |
| Main Drawback | Low peak brightness (~250 nits) means HDR content lacks 'pop' | Low native contrast causes blacks to appear gray in dark rooms (IPS characteristic) |
| Market Position | Budget | ✓Premium |
TCL Class S4 4K LED Smart TV (S4 / S450G)
43" / 50" / 55" / 58" / 65" / 75" / 85"
4K (2160p / 3840 x 2160)
LED LCD (Direct-lit LED backlight; typically VA panel)
60 Hz native (Motion Rate 120)
VIZIO Quantum Pro QLED 4K TV (2023)
65" / 75"
4K (3840 x 2160)
QLED LCD (IPS-type / ADS Panel)
120 Hz native (Supports up to 240Hz @ 1080p for PC)
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: TCL Class S4 4K LED Smart TV (S4 / S450G) vs VIZIO Quantum Pro QLED 4K TV (2023)
TCL Class S4 4K LED Smart TV (S4 / S450G)
VIZIO Quantum Pro QLED 4K TV (2023)
| Criterion | TCL Class S4 4K LED Smart TV (S4 / S450G) | VIZIO Quantum Pro QLED 4K TV (2023) |
|---|---|---|
| Rating | ★4.5(1,771)Amazon | ★4.2(1,606)Amazon |
Screen Size | 43" / 50" / 55" / 58" / 65" / 75" / 85" | 65" / 75" |
Resolution | 4K (2160p / 3840 x 2160) | 4K (3840 x 2160) |
Screen Type | LED LCD (Direct-lit LED backlight; typically VA panel) | QLED LCD (IPS-type / ADS Panel) |
Refresh Rate | 60 Hz native (Motion Rate 120) | 120 Hz native (Supports up to 240Hz @ 1080p for PC) |
Processor | Quad Core Processor 4K | IQ Ultra+ Processor |
Upscaling | 4K Upscaling | Spatial Scaling Engine |
HDR Formats | Dolby Vision, HDR10, HLG (No HDR10+) | Dolby Vision, HDR10+, HDR10, HLG |
Peak Brightness | ≈250 nits (SDR/HDR Real Scene) – Limited brightness | ≈1,000 nits (Marketed); ≈750-800 nits (HDR Real Scene tested) |
Local Dimming | No | Yes (Active Full Array; 40 zones on 65"; 80 zones on 75") |
Contrast | High native contrast (≈5000:1 to 8000:1 depending on size/unit) | ≈1,600:1 (Native) – Low native contrast due to IPS panel |
Color Gamut | Standard (≈75% DCI-P3); No Wide Color Gamut | ≈97% DCI-P3 (Quantum Color) |
HDMI Ports | 3x HDMI | 4x HDMI |
HDMI 2 1 | No (HDMI 2.0 bandwidth on all ports); eARC supported on HDMI 1 | Partial (Only HDMI 3 supports 4K@120Hz; HDMI 1 is eARC but 4K@60Hz) |
VRR | No | Yes (AMD FreeSync Premium Pro, HDMI Forum VRR; 48-120Hz) |
Allm | Yes (Auto Low Latency Mode) | Yes (Auto Low Latency Mode) |
Input Lag | ≈11 ms @ 4K 60Hz (Game Mode) | ≈14 ms @ 60Hz; ≈6 ms @ 120Hz |
Audio Channels | 2.0 Channel | 2.0 Channel |
Audio Power | 20 W (10W + 10W); 30 W (15W + 15W) on 85-inch model | 20 W (10W x 2) |
Audio Features | Dolby Atmos pass-through; DTS Virtual:X; Dolby Digital Plus | DTS:X; DTS Virtual:X; Dolby Atmos (Passthrough); Bluetooth Headphone capable |
Smart Platform | Google TV (Android TV) | VIZIO Home (formerly SmartCast) |
App Store | Google Play Store | VIZIO Home (Cloud-based apps, no local store) |
Voice Assistants | Google Assistant (Built-in); Works with Amazon Alexa | VIZIO Voice (Built-in to remote); Works with Alexa/Google/Apple Home |
Casting | Chromecast Built-in; Apple AirPlay | Apple AirPlay 2; Chromecast Built-in |
Connectivity | Wi-Fi 5 (802.11ac); Bluetooth 5.0; Ethernet (LAN); Optical Audio Out | Wi-Fi 6E (Tri-band 802.11ax); Bluetooth 5.2; Ethernet (LAN); USB 2.0 |
Tuner | ATSC 1.0 / Clear QAM | ATSC 1.0 (Digital) / Clear QAM (No ATSC 3.0) |
Vesa | 200x200 mm (43"/50"/55"); 300x300 mm (58"); 400x300 mm (65"); 400x400 mm (75"); 600x400 mm (85") | 400 x 300 mm (65"/75") |
Dimensions With Stand | 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 | 65": 56.9 x 35.5 x 12.7 in; 75": 65.7 x 40.5 x 13.4 in |
Weight | 55": 22.5 lbs; 65": 30.6 lbs; 75": 50.1 lbs (with stand) | 65": 41.0 lbs; 75": 59.8 lbs (with stand) |
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TCL Class S4 4K LED Smart TV (S4 / S450G)
43" / 50" / 55" / 58" / 65" / 75" / 85"
4K (2160p / 3840 x 2160)
LED LCD (Direct-lit LED backlight; typically VA panel)
60 Hz native (Motion Rate 120)
Quad Core Processor 4K
4K Upscaling
Pros
- Excellent native contrast ratio produces deep blacks (VA panel)
- Google TV interface is fast, modern, and app-rich
Cons
- Low peak brightness (~250 nits) means HDR content lacks 'pop'
- No local dimming to improve dark scene performance further
VIZIO Quantum Pro QLED 4K TV (2023)
65" / 75"
4K (3840 x 2160)
QLED LCD (IPS-type / ADS Panel)
120 Hz native (Supports up to 240Hz @ 1080p for PC)
IQ Ultra+ Processor
Spatial Scaling Engine
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
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)
Which one is better?
The VIZIO Quantum Pro QLED 4K TV (2023) is the better buy for most people - its peak brightness of 800 nits crushes the TCL's 250 nits. That said, grab the TCL if you're on a budget and need reliable performance for darker environments - it's a no-brainer choice for value seekers.
Who should buy each?
Choose the TCL Class S4 4K LED Smart TV (S4 / S450G) if: you want an affordable 4K display, enjoy watching movies in darker settings, or need low input lag for casual gaming.
Choose the VIZIO Quantum Pro QLED 4K TV (2023) if: you stream a lot of content in bright rooms, play competitive games needing lower input lag, or want a wider viewing angle for group watch parties. (120 Hz refresh, 4 ports hdmi)
Quality Seekers
Higher user rating (4.5★ vs 4.2★) indicates better overall satisfaction
→ Choose TCL Class
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose VIZIO Quantum
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ Choose TCL Class
Excellent native contrast Priority
Excellent native contrast ratio produces deep blacks (VA panel)
→ Choose TCL Class
Conclusion
With the key differences outlined, the decision should be clearer. Both options deliver quality—choose the one that fits your priorities.
Bottom line: The TCL Class S4 4K LED Smart TV (S4 / S450G) edges ahead with a 4.5★ rating compared to 4.2★. However, VIZIO Quantum Pro QLED 4K TV (2023) remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: TCL Class S4 4K LED Smart TV (S4 / S450G) or VIZIO Quantum Pro QLED 4K TV (2023)?
TCL Class S4 4K LED Smart TV (S4 / S450G) is the better choice if you prioritize excellent native contrast ratio produces deep blacks (va panel). VIZIO Quantum Pro QLED 4K TV (2023) wins if you value integrated wi-fi 6e (tri-band) provides faster streaming speed than most competitors. Both are rated highly (4.5★ vs 4.2★), so consider your specific needs and budget.
+What are the main differences between TCL Class S4 4K LED Smart TV (S4 / S450G) and VIZIO Quantum Pro QLED 4K TV (2023)?
Key differences: TCL Class S4 4K LED Smart TV (S4 / S450G) offers excellent native contrast ratio produces deep blacks (va panel), while VIZIO Quantum Pro QLED 4K TV (2023) stands out with integrated wi-fi 6e (tri-band) provides faster streaming speed than most competitors. Consider that TCL Class S4 4K LED Smart TV (S4 / S450G) low peak brightness (~250 nits) means hdr content lacks 'pop'. Meanwhile, VIZIO Quantum Pro QLED 4K TV (2023) low native contrast causes blacks to appear gray in dark rooms (ips characteristic). Check the detailed specs table above for a complete comparison.
+What should I prioritize when choosing between these tvs?
Focus on the features that matter most for your daily use. TCL Class S4 4K LED Smart TV (S4 / S450G) stands out for excellent native contrast ratio produces deep blacks (va panel) and google tv interface is fast, modern, and app-rich. VIZIO Quantum Pro QLED 4K TV (2023) excels at integrated wi-fi 6e (tri-band) provides faster streaming speed than most competitors and ips-type panel delivers wide viewing angles suitable for large group seating. Check the spec table above for the complete side-by-side breakdown.
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