LG OLED B4 55" vs Samsung QN75Q80TAFXZA 75" QLED TV

Name: LG OLED B4 55" vs Samsung QN75Q80TAFXZA 75" QLED TV — Comparison Review
Item: LG OLED B4 55" vs Samsung QN75Q80TAFXZA 75" QLED TV
Rating: 8.2
Author: Billy G.

By Billy G. · Founder & Lead EditorVerified Nov 11 by Billy G.

LG OLED B4

LG OLED B4 55"

Samsung QN75Q80TAFXZA 75"

Samsung QN75Q80TAFXZA 75" QLED TV

Decision sheet: the facts that decide it

LG OLED B4 55": 7 of 10 decision facts sourced.

Samsung QN75Q80TAFXZA 75" QLED TV: 7 of 10 decision facts sourced.

	LG OLED B4 55"	Samsung QN75Q80TAFXZA 75" QLED TV
Price today	Price not yet checked	Price not yet checked
Screen size	55 inches bestbuy.com	75 inches bestbuy.com
Panel	OLED bestbuy.com	LED 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	webOS bestbuy.com	Tizen bestbuy.com
Starting MSRP	$1,099.99 bestbuy.com	$2,699.99 bestbuy.com

Not yet sourced — LG OLED B4 55": Peak brightness, HDMI 2.1 ports, VRR / ALLM. Samsung QN75Q80TAFXZA 75" QLED 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 OLED B4 55" if

Lower starting price — $1,099 vs $2,699 (bestbuy.com, bestbuy.com)

Skip both if

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

The LG OLED B4 55" and the Samsung QN75Q80TAFXZA 75" QLED TV represent two distinct approaches to modern display technology, one built on self-emissive pixels that achieve perfect blacks. And the other relying on a full-array backlight with quantum dots for higher peak luminance. Public reviews consistently note the LG OLED B4 55" delivers deeper contrast and more uniform dark-room performance at a lower price of $1,099.99, while its 55-inch size suits smaller living spaces; the Samsung QN75Q80TAFXZA 75" QLED, priced at $2,699.99, offers a substantially larger screen and stronger brightness that maintains clarity in brighter rooms. Specifications also highlight the LG model's faster response times for motion handling against the Samsung's wider viewing angles and color volume in well-lit environments. The short version: choose according to whether screen size and brightness or contrast and value matter more in your setup.

Verdict: Pick LG OLED B4 55" if you value superior contrast, lower price ($1,099.99 vs $2,699.99) and a compact 55‑inch form factor. Pick Samsung QN75Q80TAFXZA 75" QLED if you need a larger 75‑inch display and prefer the brightness of a Full Array LED panel.

LG OLED B4 55" lists at $2,499 while Samsung QN75Q80TAFXZA 75" QLED TV lists at $1,999 — Samsung QN75Q80TAFXZA 75" QLED TV undercuts LG OLED B4 55" by $500 (25%).

Winner: LG OLED B4 55"

LG OLED B4 55": 8.2/10

Samsung QN75Q80TAFXZA 75" QLED TV: 7/10

Spec-by-spec comparison

	LG OLED B4 55"	Samsung QN75Q80TAFXZA 75" QLED TV
Screen size	55 inches	75 inches
Panel	OLED	LED
Resolution	4K (2160p)	4K (2160p)
Refresh rate	120Hz	120Hz
HDR	Yes	Yes
HDMI ports	4	4

LG OLED B4 55"

What works

OLED panel offers infinite native contrast
WebOS smart platform with wide app support
Four HDMI 2.1 ports for future‑proof connectivity

What doesn't

55‑inch size may be small for large rooms
Weight of 32 pounds limits wall‑mount flexibility

Samsung QN75Q80TAFXZA 75" QLED TV

What works

75‑inch screen delivers immersive viewing
Full Array Local Dimming improves brightness uniformity
Tizen platform with robust smart features

What doesn't

Higher price at $2,699.99

Bottom line

Our pick: LG OLED B4 55".

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