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LG C4 vs Samsung S90D: The OLED Showdown for Australian Buyers

For Australian buyers weighing premium OLED options in 2024, the LG C4 and Samsung S90D stand out as the two strongest contenders. Both deliver the deep blacks and pixel-level contrast that make OLED the gold standard for home theatre, yet they take noticeably different paths to reach that finish.

Local viewing habits make this comparison more nuanced than in other markets. From sunlit open-plan apartments in Brisbane to dim basement cinemas in Melbourne, Australian loungerooms present brightness and reflection challenges that don't always show up in overseas reviews. Pricing through JB Hi-Fi and Harvey Norman also shifts the value equation once you factor in current promotions.

This breakdown covers everything from panel brightness to gaming response times, helping you decide whether your next TV should stream the AFL finals on Kayo Sports in sharper HDR or chase the deepest blacks available on the market today.

Panel technology and brightness

The LG C4 uses LG Display's WOLED architecture, which adds a white sub-pixel to push overall luminance higher than earlier OLED generations. The Samsung S90D pairs Samsung Display's second-generation QD-OLED panel with quantum dots to widen the colour gamut at higher brightness levels. In real-world measurements, the S90D typically pulls ahead by 10-15% in peak brightness, reaching around 1,400 nits in a 10% window versus roughly 1,200 nits for the C4.

For Australian loungerooms flooded with afternoon sun, that extra brightness helps the Samsung preserve colour saturation during daytime viewing. The LG, however, counters with an updated anti-glare coating that handles reflections well, an important consideration for Sydney apartment dwellers with east-facing windows.

If you're curious how these OLED TVs stack up against professional monitors for creative work, the ultimate guide to choosing a monitor for photo editing breaks down the colour-accuracy benchmarks that matter for both photographers and video editors working from home studios.

Gaming performance

Both screens ship with four HDMI 2.1 ports capable of 4K at 120Hz, making them ideal partners for a PS5 or Xbox Series X. Variable Refresh Rate support includes FreeSync Premium on both, with the LG adding NVIDIA G-SYNC Compatible certification, a useful win for PC gamers running GeForce hardware purchased from Australian retailers like Umart or Mwave.

Input lag is nearly identical, with the LG C4 measuring around 5ms and the S90D around 4ms at 4K 120Hz in Game Mode. Neither lag is perceptible during fast-paced shooters or while watching live Kayo Sports AFL streams with mates in the same room.

The LG provides a dedicated Game Optimiser menu with detailed control over VRR, ALLM, and genre-specific picture presets. Samsung's Game Bar 4.0 takes a different approach, floating on top of content with quick toggles for aspect ratio, minimap zoom, and input lag monitoring. Both approaches work, though preference typically comes down to menu familiarity.

Smart TV platforms

LG continues its webOS 24 journey, now featuring a full home hub with Matter support and an AI-driven recommendation carousel. Australian streaming apps are well covered, with Stan, Binge, Kayo Sports, Disney Plus, Netflix, and the free local catch-up services (7Plus, 9Now, 10 Play) all present from day one.

Samsung's Tizen 2024 edition counters with Multi View, Samsung TV Plus (free ad-supported channels), and tight SmartThings integration. Tizen supports AirPlay 2 and the Apple TV app natively, which matters for households deeply invested in Apple's ecosystem.

Voice control varies on each platform. LG supports Google Assistant plus a revamped ThinQ AI, while Samsung uses Bixby alongside Alexa and Google Assistant compatibility. Both screens recognise Australian accents reliably, though the LG Magic Remote pointer remains easier for less tech-savvy family members to pick up quickly.

HDR and picture processing

HDR format support is where these two diverge meaningfully. The LG C4 supports HDR10, HLG, and Dolby Vision IQ with Precision Detail, which dynamically adjusts tone mapping based on ambient room light. The Samsung S90D covers HDR10, HLG, and HDR10+, the open alternative to Dolby Vision pushed by Amazon Prime Video and Samsung itself.

Australia's expanding library of Dolby Vision content on Apple TV Plus and select Netflix originals gives the LG a clear edge for cinephiles chasing the absolute best tone mapping. Conversely, HDR10+ on the Samsung delivers incremental improvements over standard HDR10 on compatible Amazon Originals.

Both processors handle motion interpolation and lower-resolution upscaling well, though Samsung's Neural Quantum Processor 4K produces slightly sharper edges on Freeview channels. That edge matters when watching summer cricket coverage through an outdoor antenna in Adelaide or Perth.

Sound quality and audio features

The LG C4 includes a 2.2 channel, 40W speaker system with downward-firing woofers, delivering respectable bass response for built-in audio without extra hardware. Samsung equips the S90D with a 2.1 channel, 40W setup that leans brighter, favouring dialogue clarity over low-end rumble.

Neither replaces a dedicated soundbar, but both support Dolby Atmos passthrough via HDMI eARC, ready to drive systems from brands like Sonos, Bose, or Samsung's own HW-Q990D. For viewers planning a full audio upgrade, professional calibration tools and resources help optimise speaker placement in irregular Australian loungerooms, particularly the open-plan layouts common in newer Perth developments.

Design and build quality

The LG C4 retains the gallery-inspired aesthetic of its predecessor, available in 42", 48", 55", 65", 77", and 83" screen sizes. Its slim profile and flush-fit VESA mount pattern suit tight media walls in renovated Brisbane Queenslanders where space behind the display is at a premium.

Samsung's S90D comes in 55", 65", and 77" sizes, with a minimalist stand and laser-cut bezel that feels distinctly premium. The One Connect Box option (reserved for higher Samsung Neo QLED models) is absent here, so cable management depends on the integrated channels on the back panel.

Both support wall mounting via standard 300x200mm or 400x300mm VESA patterns, and both include pedestal stands suitable for entertainment units from Australian retailers like Temple & Webster, Freedom, or local furniture stores across the eastern seaboard.

Pricing and Australian availability

At launch, the LG C4 ranges from around AUD $1,899 for the 42" model up to $6,499 for the 83" variant. The Samsung S90D starts higher at AUD $2,599 for the 55" and reaches $5,999 for the 77". These prices fluctuate throughout the year as retailers run End of Financial Year and Black Friday promotions.

JB Hi-Fi frequently offers pre-order bonuses, including bundled soundbars or extended warranty options. Harvey Norman provides interest-free payment plans through Zip and Humm, which suits buyers building a complete package with a PS5 Pro or a full home theatre system.

Australian warranty coverage is a key differentiator. Samsung OLEDs come with a two-year warranty locally, a significant benefit beyond the global one-year standard. LG covers one year, though JB Hi-Fi's Product Care add-on extends that for accidental damage during delivery and setup.

Smart picks for Australian loungerooms

Whichever path you take, the LG C4 and Samsung S90D represent genuine leaps over previous OLED generations, and either will reward Australian viewers with stunning picture quality for years. Think about which ecosystem you already trust: webOS pairs naturally with other LG appliances through ThinQ, while Tizen integrates tightly with Galaxy phones and SmartThings gear scattered around the house.

Pop into your local JB Hi-Fi or Harvey Norman showroom to see them side by side under the fluorescent lighting that mimics your own home conditions - nothing beats a real-world viewing test before committing several thousand dollars to a new screen.