Hi TECHIETIMMYTWOTIMES - Great question. Processing & Picture: The 2024 QN90D uses our NQ4 AI Gen2 Processor with 4K AI Upscaling; our 2025 QN90F upgrades to the NQ4 AI Gen3 Processor with 4K AI Upscaling Pro, providing improved AI-driven enhancements. While both models feature Neo Quantum HDR+ and Quantum Matrix with Mini LEDs, the QN90F adds Auto HDR Remastering Pro for enhanced HDR optimization and Glare Free Technology, making it a great option for bright rooms. Motion: QN90D features Motion Xcelerator 144Hz for smoother gaming and fast-motion content. QN90F steps up to Motion Xcelerator 165Hz, offering slightly better refresh rates for compatible PC gaming. Audio: Both models have Dolby Atmos with Object Tracking Sound+ and 60W 4.2.2Ch audio; QN90F further integrates AI-enhanced audio. Design: Both models feature our NeoSlim design that’s made to blend into any room. Smart: QN90F adds new features like Live Translate, Pet & Family Care, Universal Gesture Control, and Home Insight for an AI-driven experience. Gaming: QN90F adds AI Auto Game Mode and AI Motion Enhancer Pro for more intelligent gaming optimizations.
~ Samsung Specialist