LG OLED C5 Series 55-Inch 4K Smart TV vs Vizio P-Series Quantum X 55-Inch 4K Smart TV

Name: LG OLED C5 Series 55-Inch 4K Smart TV vs Vizio P-Series Quantum X 55-Inch 4K Smart TV — Comparison Review
Item: LG OLED C5 Series 55-Inch 4K Smart TV vs Vizio P-Series Quantum X 55-Inch 4K Smart TV
Rating: 7.2
Author: Billy G.

By Billy G. · Founder & Lead EditorVerified Nov 10 by Billy G.

LG OLED C5

LG OLED C5 Series 55-Inch 4K Smart TV

Vizio P-Series Quantum

Vizio P-Series Quantum X 55-Inch 4K Smart TV

Decision sheet: the facts that decide it

LG OLED C5 Series 55-Inch 4K Smart TV: 7 of 10 decision facts sourced.

Vizio P-Series Quantum X 55-Inch 4K Smart TV: 7 of 10 decision facts sourced.

	LG OLED C5 Series 55-Inch 4K Smart TV	Vizio P-Series Quantum X 55-Inch 4K Smart TV
Price today	$1,199.99	Price not yet checked
Screen size	55 inches bestbuy.com	43" vizio.com
Panel	OLED bestbuy.com	Not yet sourced
Resolution	4K (2160p) bestbuy.com	4K UHD vizio.com
Refresh rate	120Hz bestbuy.com	60Hz vizio.com
HDR	Yes bestbuy.com	Dolby Vision, HDR10+, HDR10, HLG vizio.com
HDMI 2.1 ports	Not yet sourced	3 vizio.com
VRR / ALLM	Not yet sourced	VRR vizio.com
Smart platform	webOS bestbuy.com	VIZIO OS vizio.com
Starting MSRP	$1,299.99 bestbuy.com	Not yet sourced

Not yet sourced — LG OLED C5 Series 55-Inch 4K Smart TV: Peak brightness, HDMI 2.1 ports, VRR / ALLM. Vizio P-Series Quantum X 55-Inch 4K Smart TV: Panel, Peak brightness, Starting MSRP. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.

Pick LG OLED C5 Series 55-Inch 4K Smart TV if

More refresh rate — 120Hz vs 60Hz (bestbuy.com, vizio.com)

Pick Vizio P-Series Quantum X 55-Inch 4K Smart TV if

Lower price today — $599.99 vs $1,200

Skip both if

Neither publishes peak brightness yet.

The LG OLED C5 Series 55-Inch 4K Smart TV relies on self-emissive pixels that reach true black levels by turning individual diodes completely off, delivering the kind of inky contrast. And shadow detail that public reviews consistently praise for cinematic viewing. In contrast, the Vizio P-Series Quantum X 55-Inch 4K Smart TV uses a Mini-LED backlight with quantum dots to achieve high peak brightness. And saturated color volume, attributes that multiple independent tests note as strengths for brighter rooms and HDR content. Both sets support 4K resolution at 120 Hz with variable refresh rate and include HDMI 2.1 ports, yet they diverge sharply in black-level performance, color emphasis, and overall pricing. Public specifications and aggregated reviewer measurements show the LG model excelling in dark-room accuracy while the Vizio model offers greater luminance and a more accessible cost. The short version: choose the LG OLED C5 Series for deepest blacks. And a premium cinematic experience or the Vizio P-Series Quantum X for vivid colors at a lower price.

Verdict: The OLED C5 Series 55-Inch 4K Smart TV offers more refresh rate (120Hz vs 60Hz); the P-Series Quantum X 55-Inch 4K Smart TV counters with lower price today ($599.99 vs $1,200). Neither publishes peak brightness yet.

LG OLED C5 Series 55-Inch 4K Smart TV lists at $1,199.99 while Vizio P-Series Quantum X 55-Inch 4K Smart TV lists at $599.99 — Vizio P-Series Quantum X 55-Inch 4K Smart TV undercuts LG OLED C5 Series 55-Inch 4K Smart TV by $600 (100%).

Winner: LG OLED C5 Series 55-Inch 4K Smart TV

LG OLED C5 Series 55-Inch 4K Smart TV: 7.2/10

Vizio P-Series Quantum X 55-Inch 4K Smart TV: 7/10

Spec-by-spec comparison

	LG OLED C5 Series 55-Inch 4K Smart TV	Vizio P-Series Quantum X 55-Inch 4K Smart TV
Screen size	55 inches	43"
Panel	OLED	—
Resolution	4K (2160p)	4K UHD
Refresh rate	120Hz	60Hz
HDR	Yes	Dolby Vision, HDR10+, HDR10, HLG
HDMI ports	4	3

LG OLED C5 Series 55-Inch 4K Smart TV

What works

OLED panel delivers true blacks
WebOS smart platform offers wide app support
Thin design fits wall mounting

What doesn't

Higher price point than many LED models
Limited peak brightness for very bright rooms

Vizio P-Series Quantum X 55-Inch 4K Smart TV

What works

Quantum Dot technology provides vivid colors
SmartCast platform integrates popular streaming services

What doesn't

Potential for blooming in high-contrast scenes

Bottom line

Our pick: LG OLED C5 Series 55-Inch 4K Smart TV.

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