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Biggest difference is operating system. Q825 is Roku and QM8 is Google. QM8 is better for gaming because it comes with HDMI 2.1, lower input lag and VRR. The QM8 also has eArc which is important for connecting a sound system.
Sorry, there was a problem. Please try again later.The QM8 is available in sizes from 65” to 98”, and is powered by our Mini LED ULTRA backlight, with Full Array ULTRA Local Dimming delivering 2000 nits and up to 2,300+ Dimming Zones using our new powerful TCL AIPQ Gen 3 processor for amazing local dimming control. feature Auto Game Mode (ALLM) with AMD FreeSync Premium Pro which automatically enables game mode for the lowest possible input and latency for an unmatched gaming performance. Additionally, with up to blistering fast 240 VRR, you will enjoy more responsive gameplay without lag, designed to keep you at the top of any leaderboard. You can visit www.tcl.com/us/en/products/home-theater/qm8-class/65-class-4k-mini-led-qled-hdr-google-tv-65qm850g to see all of the amazing features this TV has to offer. Hope this helps! Thank you, TCL Customer Support
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