Which is better for a bright living room?

The G5. Its Brightness Booster Ultimate makes it up to 45% brighter than a standard OLED evo panel, so it holds up better against window light and glare. The C5 is fine in a dim or controlled room.

Is the G5 worth stepping up to over the C5?

Yes if you want the larger 65-inch screen, the brighter panel and the flush wall design. If a 55-inch set fits your room and you value the included soundbar, the C5 covers the same core OLED strengths.

Which is better for gaming?

Both are strong. The C5 lists G-SYNC and FreeSync Premium explicitly, while the G5 lists a higher 165 Hz refresh. Both have four HDMI 2.1 ports, VRR and ALLM, so pick by screen size and brightness.

Do both support Dolby Vision and Dolby Atmos?

Both support Dolby Vision HDR. The C5 lists Dolby Atmos and ships with an Atmos soundbar; the G5's built-in speakers list Dolby AC-4 and Dolby Digital, so add a soundbar for Atmos.

Both are 2025 OLED evo sets with similar panel technology, so lifespan should be comparable. The G5's brighter panel runs harder at peak brightness, and LG's webOS Re:New program covers software updates on eligible sets.

Can I wall-mount both?

Yes. The G5 is built for a flush wall mount and includes the hardware, but no stand. The C5 comes with a stand and also supports VESA mounting.

LG 65 Inch OLED evo Smart TV vs LG C5 OLED evo 4K TV

Both are 2025 LG OLED evo sets with webOS 25, Dolby Vision and four HDMI 2.1 ports, so picture quality is close. The G5 is the step-up: a 65-inch panel, the brighter Alpha a11 Gen 2 processor with Brightness Booster Ultimate, and a flush wall-mount design. The C5 is a 55-inch set with the Alpha a9 Gen 7 chip and a bundled soundbar kit. Buy the G5 for a bright living room and the biggest picture; buy the C5 for a smaller room or a tighter budget where a soundbar bundle matters.

Choose the LG G5 if you want the larger 65-inch screen, the brightest OLED picture LG makes, and a gallery-style flush wall mount.
Choose the LG C5 if your room suits a 55-inch set and you want strong OLED gaming features with a soundbar included in the box.

Prices

LG 65 Inch OLED evo Smart TV: $1,599.99 at Amazon (last seen Nov 9)