TCL 5-Series S555 65" (QLED) vs TCL QM8 65"
The Verdict
Both 65-inch TCL models deliver solid 4K gaming experiences, but they target different budgets. Picture quality diverges significantly: the QM8's mini-LED backlight with 5000 nits brightness and superior dimming zones crushes the standard QLED S555's 800-nit output, making it dramatically superior for HDR content and bright rooms. Gaming performance slightly favors the QM8 (6ms vs 8ms input lag), and its AiPQ Pro processor handles upscaling better. Audio quality gap widens with the QM8's 50W 2.1ch system supporting Dolby Atmos versus the S555's basic 24W 2.0ch setup. At $599, the S555 delivers commendable value with functional Google TV, adequate gaming features, and acceptable picture quality for budget-conscious buyers. However, the QM8's $999 price tag justifies its premium positioning through substantially better contrast, brightness, processing power, and audio. For anyone prioritizing picture quality and willing to invest moderately more, the QM8 is the clear winner. Budget shoppers satisfied with competent rather than exceptional performance should choose the S555.
Who Should Buy
Buy the TCL 5-Series S555 65" (QLED) if…
- →65-inch 4K with 120Hz and VRR at $599 is outstanding value
- →Both Dolby Vision and HDR10+ support — rare at this price
- →QLED color enhancement produces vivid, saturated colors
Buy the TCL QM8 65" if…
- →Exceptional value — up to 5,000 nits peak brightness for under $1,000
- →One of the brightest consumer TVs available regardless of price bracket
- →All four HDMI 2.1 ports with VRR and ALLM for 4K@120Hz gaming
Category Scores
Pros & Cons
TCL 5-Series S555 65" (QLED)
Pros
- 65-inch 4K with 120Hz and VRR at $599 is outstanding value
- Both Dolby Vision and HDR10+ support — rare at this price
- QLED color enhancement produces vivid, saturated colors
- Wi-Fi 6 and four HDMI ports (one HDMI 2.1) handle modern setups
- Google TV platform with Chromecast built-in
Cons
- Only 1 HDMI 2.1 port — the other 3 are HDMI 2.0
- 800 nits is decent but not as impressive as the 6-Series
- No Dolby Atmos — audio is basic
- Edge-lit local dimming with limited zones shows blooming
TCL QM8 65"
Pros
- Exceptional value — up to 5,000 nits peak brightness for under $1,000
- One of the brightest consumer TVs available regardless of price bracket
- All four HDMI 2.1 ports with VRR and ALLM for 4K@120Hz gaming
- Google TV provides a smooth, well-supported smart TV experience
- Dolby Vision IQ and HDR10+ covered for the full HDR ecosystem
Cons
- Aggressive brightness can look oversaturated out of the box — calibration recommended
- Mini-LED blooming is more visible than on premium Samsung or Sony panels
- Build quality and remote feel cheaper than Samsung or Sony equivalents
- Fan noise under extreme brightness conditions reported by some users
Full Specifications
| Spec | TCL 5-Series S555 65" (QLED) | TCL QM8 65" |
|---|---|---|
| Body | ||
| VESA mount | 300 x 300mm | 400 x 300mm |
| Weight | 42.3 lbs | 68.3 lbs |
| Dimensions | 57.2 x 33.0 x 3.2 inches | — |
| Dimensions (w/ stand) | 57.2 x 35.6 x 12.3 inches | 56.7 x 36.6 x 12.8 inches |
| Audio | ||
| Output (watts) | 24 | 50 |
| Speakers | 2.0ch | 2.1ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 8 | 6 |
| Display | ||
| HDR | Dolby Vision, HDR10+, HDR10, HLG | Dolby Vision IQ, HDR10+, HDR10, HLG |
| Size | 65" | 65" |
| Type | QLED (VA LCD) | Mini-LED QLED |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz | 120Hz |
| Brightness (nits) | 800 | 5000 |
| Smart TV | ||
| Os | Google TV | Google TV |
| Voice assistant | Google Assistant | Google Assistant |
| Connectivity | ||
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6 (802.11ax) |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 1 | 2 |
| HDMI ports | 4 | 4 |
| Processor | ||
| Chipset | — | AiPQ Pro Processor |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
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