TCL S5 S-Class 75S551G 75"

★★★★★ 5.0 (5)

The 120Hz panel with FreeSync and G-Sync compatibility makes this a standout gaming display, while the TCL AIPQ processor uses deep learning to optimize clarity. The FullView 360 metal bezel-less design and Dolby Vision HDR support elevate its presence and picture quality for a budget-friendly 75-inch screen. This TV is best for console and PC gamers who need smooth, tear-free motion at a large scale without a premium price tag.

Screen 75"
Resolution 3840x2160
Panel LED
Refresh 120 Hz
HDR HDR PRO+ with Dolby Vision, HDR10+, HDR10, & HLG
smart platform Google TV
dolby vision Yes
dolby atmos Yes
TCL S5 S-Class 75S551G 75" tv
58 Overall Score

Snapshot

The 30-Second Version

The TCL S5 S-Class 75S551G is a 75-inch 4K TV that punches above its weight for gaming thanks to a 120Hz panel and VRR, all for around $741. Picture quality is below average with washed-out blacks, so movie fans should be cautious. It's best for bright rooms, gamers, and anyone who just wants a huge screen with a smart, easy-to-use Google TV interface.

Pros & Cons

Pros

  • Huge 75-inch screen for under $750 96th
  • 120Hz panel with VRR is great for gaming 87th
  • Google TV is fast and easy to use 77th
  • Supports every major HDR format 76th
  • Sleek bezel-less design looks premium

Cons

  • Picture quality is below average for 4K TVs
  • No local dimming, blacks look washed out
  • Only 3 HDMI ports, one is HDMI 2.1
  • Wi-Fi 5 instead of newer Wi-Fi 6
  • Audio is just okay, a soundbar is a must

The proof

Performance

In our database, the TCL S5's HDR performance sits in the 96th percentile, which sounds incredible until you realize that metric measures format support, not actual picture quality. It does play nice with Dolby Vision, HDR10+, HDR10, and HLG, so you won't run into compatibility issues. The real-world picture quality, however, is a different story. At the 37th percentile, it's below average. The Direct LED backlight without local dimming means blacks look more gray in a dark room, and peak brightness is just okay. For sports and bright living rooms, it's perfectly watchable. For movie nights with the lights off, it's a bit underwhelming.

Gaming is where this TV really shines for the money. The gaming score hits the 87th percentile, which is one of the best on the market for a budget set. The 120Hz refresh rate and VRR support (FreeSync and G-Sync Compatible) make a real difference with a PS5 or Xbox Series X. Input lag is low in Game Mode, and the HDMI 2.1 port means you can push 4K at 120fps. Motion handling with MEMC frame insertion is solid, keeping fast action in sports and games looking smooth. The audio is middle of the pack at the 74th percentile, with Dolby Atmos and DTS Virtual:X support, but you'll still want a soundbar for any serious viewing.

Performance Percentiles

HDR 95.8
Audio 73.7
Smart 76.6
Gaming 86.9
Display 76.2
Connectivity 57.4
Social Proof 55.5
Picture Quality 36.8

Specifications

Full Specifications

Display

Size 75"
Resolution 4K
Panel Type LED
Backlight Direct LED
Curved No

Picture Quality

Motion Tech Motion Rate 240 with MEMC Frame Insertion
Processor TCL AIPQ Processor with Deep Learning AI

HDR

HDR Formats HDR PRO+ with Dolby Vision, HDR10+, HDR10, & HLG
Dolby Vision Yes
HDR10+ Yes
HLG Yes

Gaming

Refresh Rate 120 Hz
VRR FreeSync, G-Sync Compatible
ALLM Yes
Game Mode Yes

Smart TV

Platform Google TV
Voice Assistant Google Assistant, Amazon Alexa, Apple HomeKit
Screen Mirroring AirPlay 2, Chromecast built-in

Audio

Dolby Atmos Yes
Surround Sound DTS Virtual: X
eARC Yes

Connectivity

HDMI Ports 3
HDMI Version 2.1
Wi-Fi Wi-Fi 5

vs Competition

Stacked against the Sony BRAVIA XR XR77A95L or the LG C5 OLED, the TCL S5 isn't even playing the same game. Those TVs cost several times more and deliver perfect blacks and incredible contrast. The TCL's real competition is the Hisense U8 Series and the Roku Plus Series. The Hisense U8 uses mini-LED backlighting, so it gets brighter and has better contrast, making it a better pick for movie fans. But it's often pricier, and finding a 75-inch model under $800 is tough. The Roku Plus Series is simpler and often cheaper, but it lacks the 120Hz panel and HDMI 2.1, so gamers should steer clear. The Samsung Frame Pro is in a different category entirely, focused on design and lifestyle features at a much higher cost. For a big-screen gaming TV on a budget, the TCL S5 carves out a nice niche.

Spec TCL S5 S-Class 75S551G 75" LG C5 OLED55C5PUA Sony BRAVIA XR XR77A95L Samsung Neo QLED QN70F Hisense U8 Series 65U8QG Roku Pro Series 55R8C5
Screen Size 75 55 77 75 65 55
Resolution 3840x2160 3840x2160 3840x2160 3840x2160 3840x2160 3840x2160
Panel Type LED OLED QD-OLED Mini-LED Mini-LED QLED
Refresh Rate 120 120 120 120 165 120
Hdr HDR PRO+ with Dolby Vision, HDR10+, HDR10, & HLG Dolby Vision, HDR 10, Hybrid Log-Gamma (HLG) HDR 10, Hybrid Log-Gamma (HLG), Dolby Vision HDR10+ Dolby Vision, HDR 10+, HDR 10, Hybrid Log-Gamma (HLG) Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG)
Smart Platform Google TV webOS Google TV Tizen Google TV Roku TV
Dolby Vision true true true false true true
Dolby Atmos true true true true true true
Hdmi Version 2.1 2.1 2.1 2.1 2.1 2.1
Compare Compare Compare Compare Compare
Product HDRAudioSmartGamingDisplayConnectivitySocial ProofPicture Quality
TCL S5 S-Class 75S551G 75" 95.873.776.686.976.257.455.536.8
LG C5 OLED55C5PUA Compare 91.994.490.999.288.598.798.393.9
Sony BRAVIA XR XR77A95L Compare 91.995.590.987.498.684.988.596.4
Samsung Neo QLED QN70F Compare 71.679.193.989.189.789.694.679.7
Hisense U8 Series 65U8QG Compare 91.997.496.296.484.88777.399.5
Roku Pro Series 55R8C5 Compare 77.586.486.389.177.893.188.536.8

Price

Value & Pricing

At $741 for a 75-inch TV with a 120Hz panel and full HDR support, the value proposition is strong if your priorities are size and gaming. You're not going to find an OLED or a high-end QLED anywhere near this price. The closest competitor is something like the Hisense U8 Series, which offers better picture quality with mini-LED but typically costs more and comes in smaller sizes at this price. If you just want a gigantic screen that can keep up with a PS5 and stream Netflix in Dolby Vision, the TCL S5 delivers. Just know that you're trading picture quality for size.

From $741 1 offer across 1 retailer
Newegg 1 offer From $741

We started tracking prices for this product on Sep 13, 2026. The chart appears once we have more data.

Read more

Overview

The TCL S5 S-Class 75S551G is a massive 75-inch 4K TV that tries to pack a lot of modern features into a budget-friendly package. If you're searching for a big screen under $800 that can handle gaming, streaming, and everyday TV without breaking the bank, this model is going to catch your eye. It runs Google TV, which is one of our favorite smart platforms, and it supports all the major HDR formats including Dolby Vision. The FullView 360 metal bezel-less design also makes it look more expensive than it is.

For gamers, the spec sheet is surprisingly stacked. You get a 120Hz panel, FreeSync and G-Sync compatibility, ALLM, and even an HDMI 2.1 port. That's a combination you don't always see at this price point. TCL's AIPQ processor with deep learning AI handles the upscaling and motion processing, and there's even an Enhanced Dialogue Mode for when movie mixes bury the voices. It's clearly aimed at people who want a versatile living room centerpiece.

But there's a catch. While the HDR support is broad, the actual picture quality lands in the 37th percentile among TVs we track. That means it's fine for a bright room and casual viewing, but it won't deliver the deep blacks or high brightness of a premium QLED or OLED. If you're a home theater purist, you'll notice the limitations of the Direct LED backlight. Still, for mixed use in a family room, the sheer size and feature set are hard to ignore.

Common Questions

Q: Is the TCL 75S551G good for gaming?

Yes, it's excellent for gaming on a budget. The 120Hz panel, FreeSync and G-Sync support, and HDMI 2.1 let you play at 4K 120fps on a PS5 or Xbox Series X with smooth, tear-free motion.

Q: Does the TCL S5 have good picture quality?

It's okay for a budget TV but below average overall. The Direct LED backlight without local dimming means blacks look gray in dark rooms, though it's fine for bright living rooms and casual viewing.

Q: How many HDMI ports does the TCL 75S551G have?

It has three HDMI ports total, and one of them is HDMI 2.1 for 4K 120Hz gaming. If you have multiple consoles and a soundbar, you might need an HDMI switch.

Q: Is the TCL S5 better than the Hisense U8?

The Hisense U8 has better picture quality with mini-LED backlighting and higher brightness, so it's better for movies. The TCL S5 is often cheaper at 75 inches and has a slight edge for gaming with its 120Hz panel at this size.

Who Should Skip This

Home theater enthusiasts and anyone who watches movies in a dark room should skip the TCL S5. The lack of local dimming and mediocre black levels will drive you nuts. You'd be happier with a smaller OLED like the LG C5 or a mini-LED set like the Hisense U8, even if it means sacrificing some screen size. Also, if you need more than three HDMI ports or want the latest Wi-Fi 6 for wireless streaming, this TV's connectivity is a bit dated.

Verdict

If you're asking "should I buy the TCL 75S551G?", the answer depends on what you watch. For gamers who want a massive 75-inch screen with 120Hz VRR and don't want to spend a fortune, this is a fantastic deal. The gaming performance is a standout at this price, and Google TV is a pleasure to use daily. For sports fans, the motion handling is solid, and the big screen makes every game feel immersive.

But if you're a movie buff who watches in a dark room and cares about deep blacks and high contrast, you should look elsewhere. The picture quality is the weak link here. A smaller TV with better panel technology, like a 65-inch Hisense U8 or even a last-gen OLED on sale, will give you a much better cinematic experience. This TCL is a crowd-pleaser for bright rooms and mixed use, not a reference monitor.

Usage Scores

Overall (57.6)Budget (49.8)Gaming (67.5)Movies (53)Sports (64.6)Outdoor (38.9)Portable (36.4)Corporate (51.4)Streaming (63.6)Smart Home (61.8)

Similar Products