Samsung 77S90H Review: Is the 77-Inch RGB Tandem Panel Worth It?

Last updated: September 2026

🕒 10 min read

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At 77 inches, Samsung’s S90H line quietly splits into two different TVs depending on size — and picking the wrong one means paying mid-flagship money without getting the panel that justifies it. The 77-inch model is one of three sizes in the line built around Samsung’s RGB Tandem panel, while the 55-, 65-, and 83-inch versions use a standard WOLED panel instead. See our full OLED TV guide first if you’re still deciding on size and tier before narrowing in on this specific model.

This Samsung 77S90H review is built entirely on RTINGS’ published testing of the S90H line — we haven’t independently tested this TV, and RTINGS gates most of its numeric test data behind a paid membership, so what follows covers its qualitative verdict, Pros and Cons, and how the 77-inch model compares to the LG C6H, Samsung’s own step-up S95H, and LG’s G6.

Quick Verdict

Product Specs at a Glance

Design & Build Quality

Materials & Finish

RTINGS’ test unit was manufactured in Mexico, with a February 2026 production date, per its published unit details.

Ports & Connectivity

The 77S90H carries 4 HDMI 2.1 ports capable of 165Hz, with VRR support across FreeSync, HDMI Forum VRR, and G-SYNC Compatible. Its HDMI ports pass through Dolby audio formats only — no DTS passthrough is supported, worth checking against your existing soundbar or receiver before buying.

Performance & Real-World Use

Bright-Room and Everyday Viewing

Per RTINGS’ testing, the 77S90H handles bright-room viewing well while still delivering OLED’s core dark-room contrast advantage. Its 77-inch RGB Tandem panel is the size-specific reason for this — RTINGS found it brighter and more vibrant than the standard-WOLED 55-, 65-, and 83-inch models in the same S90H line, an advantage the 77-inch (along with the 42- and 48-inch models) gets specifically from that panel sub-type.

Gaming

RTINGS reports full compatibility with the PS5 and PS5 Pro at 4K/120Hz and 1440p/120Hz, with VRR and ALLM support. Xbox Series X and Series S compatibility is nearly identical, minus Dolby Vision, which this TV doesn’t support on either console platform. Per RTINGS’ own testing of the S90H line, motion handling stayed crisp and largely blur-free behind fast action.

Streaming and Lower-Quality Sources

The 77S90H’s upscaling is a genuine strength per RTINGS’ assessment, cleaning up compression artifacts on lower-quality streaming or broadcast sources more effectively than its Cons list might suggest on its own. That said, one specific limitation shows up here directly: RTINGS notes the TV can’t smooth out low-quality content especially well in motion, so the upscaling advantage narrows somewhat once fast-moving, lower-bitrate footage is involved.

Key Features Breakdown

RGB Tandem Panel at 77 Inches

Not every size in the S90H line shares this feature — only the 42-, 48-, and 77-inch models use Samsung’s RGB Tandem panel, while the 55-, 65-, and 83-inch versions (which carry separate warehouse-club model codes in some cases) use a standard WOLED panel instead. RTINGS attributes the 77-inch model’s brighter, more vibrant picture directly to this panel difference, which is why the size you buy at within this line matters more than it would for most other TV families.

Gradient Handling and Upscaling

RTINGS calls out excellent gradient handling and very good upscaling as standout strengths for this model — the kind of processing quality that shows up in everyday content (skies, skin tones, low-quality streams) more often than in flashy spec-sheet numbers. Where that processing pulls back somewhat is in fast motion on already-low-quality sources, covered in the Cons below.

The Good, the Bad, and the Ugly

Pros

• ✅ Perfect blacks in a dark room — OLED’s core contrast advantage.
• ✅ Colors are incredibly bright and vibrant — attributed to the RGB Tandem panel at this size.
• ✅ Small bright details stand out well — useful for HDR highlight detail.
• ✅ Very good upscaling — most noticeable on lower-quality sources.
• ✅ Excellent gradient handling — fewer visible bands in smooth-color scenes.

Cons

• ❌ Very noticeable stutter in slow panning shots — a motion-handling weakness RTINGS specifically calls out.
• ❌ No Dolby Vision or DTS audio support — a real limitation if your source library or sound system depends on either format.
• ❌ Can’t smooth out low-quality content especially well — the upscaling strength above has a real limit on lower-bitrate, fast-moving footage.
• ❌ Near-black shadow details are slightly crushed — worth knowing for viewers who watch a lot of dark, moody content.

The Ugly

The honest trade-off buyers weighing the 77-inch S90H against its own siblings need to sit with: pick this line at the wrong size — 55, 65, or 83 inches instead of 42, 48, or 77 — and you lose the RGB Tandem panel that RTINGS credits for this model’s brightness and color advantage, while likely still paying S90H-line pricing. That’s a real risk specific to this product line’s own naming, not a general OLED shopping trap.

Who Should Buy This — and Who Shouldn’t

Buy This If

The 77-inch Samsung S90H fits buyers who want a large-screen OLED with strong bright-room performance and vivid color, and who don’t depend on Dolby Vision or DTS audio passthrough — think of it like choosing a car trim specifically for one feature you’ll use daily, rather than a badge that sounds impressive in the showroom.

Skip This If

Buyers who prioritize Dolby Vision support or the most advanced picture processing are better served by the LG C6H — see How It Compares below for the details, or check out our separate review of LG’s own C6, the closest LG comparison we’ve reviewed directly. Buyers chasing maximum brightness specifically should look at Samsung’s own step-up S95H instead.

If 77 inches is more than you need, our Samsung 65S85H review covers a 65-inch Samsung OLED.

How It Compares

RTINGS’ published comparisons placed the 77S90H against several other OLEDs. Against the LG C6H — a different model from LG’s own C6 line, reviewed separately above — RTINGS found the two share the same panel, with LG ahead on processing and real-content brightness, and Samsung ahead on reflection handling. Against Samsung’s own step-up S95H, RTINGS found the S95H brighter, while the 77S90H held its own with better bright-room contrast.

Against the standard-WOLED sizes within its own S90H line (55″, 65″, 83″), RTINGS found the 77-inch model brighter and more vibrant, attributed to its RGB Tandem panel. And against LG’s G6 OLED, RTINGS found the G6 brighter overall with better processing. This comparison content reflects RTINGS’ page.

We also have a separate review of the LG OLED77C6H, built on RTINGS’ testing of the LG C6H.

Final Verdict

Is the Samsung 77S90H Worth Buying?

For buyers set on a 77-inch OLED who want strong bright-room performance and vivid color, and who don’t need Dolby Vision or DTS passthrough, the 77S90H’s RGB Tandem panel makes a genuine, size-specific case for itself within Samsung’s own lineup. Buyers who need Dolby Vision or the sharpest picture processing are better served by the LG C6H; buyers chasing maximum brightness by Samsung’s own S95H.

Whichever way you land, buying this model at any size other than 77 (or 42/48) inches means giving up the panel advantage this review is actually about. This verdict draws on RTINGS’ published testing.

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Frequently Asked Questions

✅ Based on spec analysis and RTINGS’ published review of the Samsung S90H line.