Which is better for gaming, the C6 or the C4?

They are effectively tied. Both have 120 Hz OLED panels, VRR, FreeSync Premium, G-Sync and four HDMI 2.1 ports. The C4 adds the Game Optimizer dashboard, and the C6 carries the same feature set forward with newer processing.

Is the C6 worth stepping up to over the C4?

If you keep a TV for many years, yes, because the newer model gets webOS updates longer and has the latest processor. If you mainly care about OLED contrast and 120 Hz gaming, the C4 delivers the same core experience.

Neither has a documented lifespan advantage. The C4 has two years of owner feedback at 4.6 of 5, while the C6 is too new to have that record. OLED panel care features are present on both.

Do both support Dolby Vision and Dolby Atmos?

Yes. Both handle Dolby Vision HDR and Dolby Atmos, and both cover HDR10 and HLG. Neither adds HDR10+.

Which is better for a bright room?

Neither has an anti-glare coating, and OLED brightness is similar across the two. For a very bright room, either set benefits from light control; the newer C6 processing may handle tone mapping slightly better.

Do both have four HDMI 2.1 ports?

Yes. The C4 lists four HDMI 2.1 ports, and the C6 carries the same four-port HDMI 2.1 layout, enough for a console, a PC and two streaming devices.

LG OLED evo C6 48" 4K Smart TV vs LG OLED48C4PUA OLED TV

Both are 48-inch LG OLED evo sets with 120 Hz panels, four HDMI 2.1 ports, Dolby Vision and Dolby Atmos, so picture and gaming feel nearly identical. The C6 is the newer 2026 model with a newer processor generation and a newer webOS, while the C4 is the 2024 model that has been widely reviewed and owner-tested for two years. Buy the C6 if you want the longest software support runway and the latest AI processing; buy the C4 if you want the proven set and the same core OLED experience.

Choose the LG C6 if you want the newest C-series panel generation and the longest remaining webOS update life.
Choose the LG C4 if you want the same OLED picture and gaming features with a track record of owner reviews behind it.

Prices

LG OLED evo C6 48" 4K Smart TV: $899.00 at Greentoe (last seen Nov 13)