Which is better for gaming?

The C6 has the edge on paper with a 165Hz panel and the newer processor. The C5 still covers the essentials: 0.1ms response time, 120Hz native, VRR up to 144Hz and four HDMI 2.1 ports.

Is the 55-inch C5 really the same price as the 42-inch C6?

Yes, close to it. The C5 was $949.95 at Walmart and the C6 $949.99 at BrandsMart USA, both as of November 4, 2026.

Which has the better picture?

Both use OLED panels with per-pixel contrast and Dolby Vision. The C6 adds the newer a11 Gen3 chip and Brightness Booster Pro, but the C5's Alpha 9 Gen8 processing is well regarded and the bigger screen usually matters more.

Neither has a published lifespan figure. Both are OLED sets with pixel-level dimming features, and LG's OLED Care is named on the C6. Panel size and model year do not decide longevity.

Is the C6 worth the extra over the C5?

There is no real extra: the two prices differ by four cents. Choose on size and refresh rate, not cost.

Do both support Dolby Atmos?

Yes. The C5 has 40W 2.2-channel speakers with Dolby Atmos. The C6 supports Dolby Atmos and FlexConnect with LG soundbars.

LG OLED evo AI C6 42-inch TV vs LG C5 OLED evo 4K Smart TV (2025)

Both are LG OLED evo sets with 4 HDMI 2.1 ports and Dolby Vision, and their prices are nearly identical: $949.99 for the 42-inch C6 at BrandsMart USA and $949.95 for the 55-inch C5 at Walmart, both as of November 4, 2026. The C5 is the better buy for most people because that money buys a 55-inch screen instead of a 42-inch one. Pick the C6 only if a 42-inch size is the hard requirement or you want the newer processor and higher refresh rate.

Today the LG OLED evo AI C6 42-inch TV costs $9.96 less at its best price.

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