
Samsung Q90C QLED TV
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Your starting point
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
Input lag (4K 120, game mode): ~5.1 ms at 120Hz / ~9.2 ms at 60Hz vs ~10 ms
Samsung Q90C is $800 cheaper. Pay the difference only if peak brightness (hdr) matters to you.
The trade-off to know
Check first: the LG G4 has burn-in risk. the LG G4 has a glossy screen, no anti-reflective coating. Tick them under deal-breakers if that rules it out.
Look at the differences ↓Side by side
Start with the key specs, then explore as much as you need.
| What you’re comparing | Samsung Q90C QLED TV | LG G4 OLED evo TV |
|---|---|---|
| Panel typePicture | Mini-LED QLED (VA) | WOLED evo with Micro Lens Array (MLA 2.0) & Heat Sink |
| Peak brightness (HDR)Picture | ~1,500–2,000 nits HDR | ~1,500–3,000 nits peak HDR |
| ContrastPicture | Very high (local-dimmed LED, not infinite) | Infinite (per-pixel self-lit) |
| Local dimmingPicture | Quantum Mini LED full-array | Per-pixel self-emissive |
| HDMI 2.1 portsGaming | 4 | 4 (all 48Gbps HDMI 2.1) |
Showing 5 of 28 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
Beyond the spec sheet
Explore the ownership details available for this pair.
Samsung Q90C
LG G4
Real-world physical measurements for credenza width, soundbar clearance, and wall mounting.
TV Stand & Table Footprint
Heavy center pedestal stand (fits narrow 16"–24" media consoles)
No stand in box for 65"+ (included on 55" in some regions)
Soundbar Clearance
3.0 in clearance above pedestal (fits most soundbars)
N/A on wall; ~2.8 in with optional stand
Wall Mount Profile & Depth
1.0 in NeoSlim uniform chassis depth
Ultra-slim 0.9 in flush gallery mount with zero gap
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Samsung: What to watch for
Lack of Dolby Vision HDR format support.
Rainbow horizontal flare streaks under intense direct side lighting.
LG: What to watch for
65" and larger models still omit tabletop stands in the US box.
webOS home screen features sponsored content & banner recommendations.
Know what’s behind the comparison
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Samsung Q90C costs $800 less at list price.
LG G4 has this deal-breaker: burn-in risk. Static news tickers, game HUDs and desktop use can leave permanent marks over the years.
Too close to call on gaming from the spec sheets. Only input lag (4k 120, game mode) is rankable here. HDMI 2.1 ports: 4 vs 4 4K 120Hz: Yes vs Yes
Of the 28 specs tracked here, 25 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.