Two 65-inch OLEDs: different HDR formats, daylight behavior, owner experiences and reasons to pay more.
Choose the exact US LG C5 when Dolby Vision and consistent OLED blacks in an ordinary bright room matter most. Choose the US 65-inch Samsung S90F QD-OLED when vivid HDR color and direct-glare handling suit your setup. The labs do not agree on which wins every SDR brightness test, and neither is a universal winner. Compare the actual verified US seller prices before paying a premium.
Choose it if You want Dolby Vision and a versatile OLED for daytime TV as well as movie nights.
Keep in mind A window directly opposite the screen can still be distracting.
Current verified offers appear here when available. Open the full review for all buying options.
Full LG C5 review →Choose it if You care most about vivid HDR color on the confirmed US QD-OLED version.
Keep in mind Ambient light raises black levels, and Dolby Vision is absent.
Current verified offers appear here when available. Open the full review for all buying options.
Full Samsung S90F review →| Your buying question | LG C5 | Samsung S90F | What this means for you |
|---|---|---|---|
| HDR formats | Dolby Vision; no HDR10+. | HDR10+; no Dolby Vision. | Check your films, streaming device and console. Format support is a capability, not proof that every scene looks better. |
| Daylight and direct reflections | RTINGS found stronger SDR brightness and better preservation of deep blacks in ambient room light; Tom's Guide's separate 10% window testing found a different brightness order. | RTINGS found better direct-reflection handling but more raised blacks under ambient light; Tom's Guide found higher 10% window SDR brightness. | Diffuse daylight is not the same as a reflected window. Exact test patterns and modes matter; the independent numerical context is explained below. |
| Color in HDR films | A traditional WOLED picture. | The tested QD-OLED version has the HDR color advantage. | This Samsung finding belongs to the US 65-inch QD-OLED model. It must not become a claim about every S90F size or region. |
| Gaming devices | Four HDMI 2.1 inputs, VRR and up to 4K 144Hz from a compatible PC. | Four HDMI 2.1 inputs, VRR and up to 4K 144Hz from a compatible PC. | Both support modern consoles. A 144Hz PC capability is not a promise that a console game runs at 144Hz. |
Tom's Guide's original 65-inch LG C5 review reports 1,165 nits HDR and 335 nits SDR. Its separate 65-inch Samsung S90F review reports 1,155 nits HDR and 520 nits SDR. All are 10% window figures from those articles, not full-screen sunlight or day-to-day average picture brightness.
Tom's Guide's later S90F comparison table includes slightly different C5 snapshot values (1,179 HDR / 344 SDR). RTINGS also judges relative SDR performance differently in its own testing. Do not average numbers across laboratories or assume every picture mode, software version or test window tells the same story.
In Best Buy's September 13, 2026 exact-size snapshots, LG C5 had 1,543 owner ratings and Samsung S90F had 905; both averaged 4.8 out of 5 at that time. LG owners particularly praised its picture but sometimes criticized remote/menu ease, while Samsung owners praised vivid color and brightness. Counts and averages are dated, not live; neither proves a reliability rate.
For Dolby Vision film libraries or Xbox titles that use it, the C5 has an actual compatibility edge. For QD-OLED HDR color and direct glare, consider the 65-inch S90F. In either case, the most important final tie-breaker is a verified exact-model offer, real room lighting and return terms.
Choose based on the light that reaches the screen. The C5’s daytime brightness and resistance to raised blacks help with ambient room light. The S90F’s reflection treatment helps with direct glare. If direct sunlight is the main problem, compare the bright-room alternatives before buying either.
Both offer the key modern gaming connections. Dolby Vision support gives the LG a relevant distinction for compatible Xbox content; that is not a blanket PS5 advantage. Count your HDMI devices and check the game-mode findings in each full review.
No. This page identifies QN65S90FAFXZA, the US 65-inch QD-OLED model. Other sizes, regions and model suffixes can use WOLED. Do not buy from a generic S90F listing without confirming its full code.
Treat Dolby Vision, your lighting and color preference as reasons to pay more only if you will use the difference. If both fit your setup, compare the current seller, delivered price and return terms. A historical score tie cannot establish today’s best deal.
Not in every test. RTINGS favors the C5 for SDR brightness in its own conditions; Tom's Guide lists 335 nits SDR for the 65-inch C5 and 520 for the 65-inch S90F in a 10% window. Their test protocols, modes and review snapshots differ. Neither reading is a guarantee of whole-screen brightness in your room.
Matched Best Buy owner samples recorded on September 13, 2026 broadly praise both pictures. LG C5 comments also mention remote and menu friction; Samsung S90F owners particularly appreciate picture and brightness. These are experiences from an attributable retailer review pool, not controlled long-term reliability tests.
RTINGS tests the 65-inch C5 and 65-inch S90F. This guide uses its qualitative comparison and exact size/region checks; no new numerical lab test, Piqelo Score or reliability measurement is published here.
Independent comparison of the tested US 65-inch units.
Read exact source →Separate tested 65-inch C5 and S90F reviews, with size and region limitations.
Read exact source →Read S90F exact test →Manufacturer specifications for OLED65C5PUA; specifications are distinct from independent tests.
Read exact source →65-inch C5 10% HDR/SDR nits, latency and review-mode observations; original review snapshot.
Read exact source →65-inch S90F 10% HDR/SDR nits and later comparative C5 readings; do not combine separate test modes.
Read exact source →September 13, 2026 matched owner observation: 1,543 ratings, 4.8/5; picture/remote feedback, not a durability sample.
Read exact source →September 13, 2026 matched owner observation: 905 ratings, 4.8/5; owner picture/brightness feedback.
Read exact source →Open these two exact 65-inch models in the TV Finder. Your budget and preferences can change the personal Search Score; retailer commission never changes the answer.
Personalize these two TVs →Compare other OLED TVs →