Verdict: The LG G5 OLED 83" wins in a dark room; the Sony Bravia 9 85" wins in any room with ambient light and for buyers who want the highest possible brightness.
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Winner: LG G5 OLED 83"
Spec-by-spec comparison
LG G5 OLED 83"
Sony Bravia 9 85"
Screen Size
83 inches
85 inches
Panel Type
WOLED + MLA (Brightness Booster Ultimate)
Mini-LED FALD (XR Backlight Master Drive)
Peak Brightness (10% window)
~1,350 nits
~2,200 nits
Native Contrast
Infinite (OLED)
~3,500:1 (Mini-LED)
HDR Formats
Dolby Vision IQ, HDR10, HDR10+, HLG
Dolby Vision, HDR10, HDR10+, HLG
HDMI 2.1 Ports
4× 4K/120Hz
2× 4K/120Hz
LG G5 OLED 83"
What works
Infinite OLED contrast — dark film sequences are incomparably immersive at 83"
Dolby Vision IQ — dynamically adjusts to changing room conditions at scale
No blooming — per-pixel control even at 83" screen area
What doesn't
~220 nit full-field brightness — large bright scenes dim in ambient light
~$3,700 — comparable pricing to Bravia 9 at 85"
Sony Bravia 9 85"
What works
~2,200 nit peak brightness — decisively better for ambient-light environments
Acoustic Multi-Audio+ — most convincing panel audio at 85" scale
XR Cognitive processor — best motion and HDR processing in a commercial TV
What doesn't
Local dimming blooming visible in controlled dark-room content
~3,500:1 native contrast — far below OLED's infinite contrast
Two HDMI 2.1 ports only — two ports at HDMI 2.0 spec