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I have both players, but I've only had the Express 4K+ for a short while, and only used it when I traveled late last month. I can't give a definitive answer to compare the two, but the Express 4K+ (model 3940) certainly seems to be very close to the Ultra 4800 in performance. However, the 4800 and the 3940 have two completely different processing chips. The 4800 uses the ARM Cortex A55 and has 2 GB of operational memory, while the 3940 has a new Realtek 1315 processor and 1 GB of memory. I would probably still give the edge to the 4800, not only for the additional memory, but also for its Dolby Vision support. Roku doesn't offer any other player with DV support, although there are Roku TVs that support DV (Roku doesn't make the TVs themselves). Also don't forget that the 4800 has a wired network connection (also supports dual band WiFi), while the 3940 is WiFi only unless you purchase an additional USB-Ethernet adapter.
Sorry, there was a problem. Please try again later.Sure it has Dolby Vision, But who cares about that, right! It's so stupid!
Sorry, there was a problem. Please try again later.Hi! All of our Roku players have their own individual features sure to fit your every need for enjoying your favorite content. For an easy comparison of each device and their features, check out https://www.roku.com/products/compare.
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