Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV vs LG OLED77C3PUA 77-Inch OLED TV

Name: Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV vs LG OLED77C3PUA 77-Inch OLED TV — Comparison Review
Item: Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV vs LG OLED77C3PUA 77-Inch OLED TV
Rating: 8.4
Author: Billy G.

By Billy G. · Founder & Lead EditorVerified Oct 13 by Billy G.

Samsung QN75Q80TAFXZA 75-Inch

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV

LG OLED77C3PUA 77-Inch

LG OLED77C3PUA 77-Inch OLED TV

Decision sheet: the facts that decide it

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV: 7 of 10 decision facts sourced.

LG OLED77C3PUA 77-Inch OLED TV: 7 of 10 decision facts sourced.

	Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV	LG OLED77C3PUA 77-Inch OLED TV
Price today	Price not yet checked	Price not yet checked
Screen size	75 inches bestbuy.com	77 inches bestbuy.com
Panel	LED bestbuy.com	OLED bestbuy.com
Resolution	4K (2160p) bestbuy.com	4K (2160p) bestbuy.com
Refresh rate	120Hz bestbuy.com	120Hz bestbuy.com
HDR	Yes bestbuy.com	Yes bestbuy.com
Smart platform	Tizen bestbuy.com	webOS bestbuy.com
Starting MSRP	$2,699.99 bestbuy.com	$1,999.99 bestbuy.com

Not yet sourced — Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV: Peak brightness, HDMI 2.1 ports, VRR / ALLM. LG OLED77C3PUA 77-Inch OLED TV: Peak brightness, HDMI 2.1 ports, VRR / ALLM. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.

Pick LG OLED77C3PUA 77-Inch OLED TV if

Lower starting price — $1,999 vs $2,699 (bestbuy.com, bestbuy.com)

Skip both if

Neither publishes peak brightness, HDMI 2.1 ports or VRR / ALLM yet.

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV relies on quantum-dot color and Full Array Local Dimming to deliver strong brightness. And contrast control, while LG OLED77C3PUA 77-Inch OLED TV uses self-emissive pixels to achieve perfect blacks and instantaneous response times. Public reviews note the Samsung set holds up better in moderately lit living rooms thanks to its higher sustained luminance. And zoned backlight, whereas the LG model earns praise for its inky shadow detail, wider color volume in dark scenes, and inclusion of four full-bandwidth HDMI 2.1 ports that support 4K120 gaming without compromise. Both televisions omit official peak-brightness figures and variable-refresh-rate specifications in their documentation, leaving buyers to weigh measured results from independent sites. The short version: choose the Samsung QN75Q80TAFXZA for brighter spaces and local-dimming performance or the LG OLED77C3PUA for superior contrast, gaming features, and a noticeably lower street price.

Verdict: Pick Samsung QN75Q80TAFXZA if you need a brighter room and Full Array Local Dimming, but pick LG OLED77C3PUA if you prefer deeper blacks, HDMI 2.1 support, and a lower price. Both lack published peak brightness and VRR specs, so choose based on the shared attributes you value most.

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV lists at $1,800 while LG OLED77C3PUA 77-Inch OLED TV lists at $2,799 — Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV undercuts LG OLED77C3PUA 77-Inch OLED TV by $999 (56%).

Winner: LG OLED77C3PUA

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV: 7.2/10

LG OLED77C3PUA 77-Inch OLED TV: 8.4/10

Spec-by-spec comparison

	Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV	LG OLED77C3PUA 77-Inch OLED TV
Screen size	75 inches	77 inches
Panel	LED	OLED
Resolution	4K (2160p)	4K (2160p)
Refresh rate	120Hz	120Hz
HDR	Yes	Yes
Audio output	60 watts	40 watts

Samsung QN75Q80TAFXZA 75-Inch Smart QLED TV

What works

Full Array Local Dimming backlight improves contrast
Four HDMI ports for multiple devices
Tizen smart platform with built‑in Apple TV+ support

What doesn't

Heavier at 88.8 pounds

LG OLED77C3PUA 77-Inch OLED TV

What works

OLED panel delivers infinite contrast and true blacks
Four HDMI 2.1 ports support next‑gen gaming features

What doesn't

No Full Array Local Dimming backlight
Heavier than typical OLED at 59.7 pounds

Bottom line

Our pick: LG OLED77C3PUA.

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