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OS UPDATE (7 May 2017) TAB S2 UPDATING TO ANDROID 7.0 Nougat This review is for those contemplating upgrading from the old T710 or T810 to the new T713 or T813 versions. I am comparing the old Tab S2 (SM-T810) to the new Tab S2 (SM-T813). I have both the old an new versions with me, both with 64GB of internal storage, and I am comparing them side by side. This comparison is also applicable for the T710 and T713 versions, and for the 32GB versions, PHYSICAL DIFFERENCES External appearance -- no difference between the old T810 and the new T-813 in physical dimensions, weight, appearance, or function. Internal processor - old T810 runs on Exynos chip set, while the new T813 runs on Snapdragon chip set. OS - old T810 runs on Android 5.1.1 Lollipop, while the new T813 runs on Android 6.01. Everything else on the spec sheets looks to be identical. PERFORMANCE The old T810 puts out an Antutu score of 65,273, while the new T813 puts out an Antutu scor of 81,232 That is one huge gain in performance of the new over the old -- a 25% increase. Is that performance gain worth trading in the old for the new? -- maybe, depending on the price differential -- I figure its worth a minimum of $100 price differential. If you can get the new version for that or less, then you have a bargain you should probably jump on -- assuming you have someone worthy of passing the old machine on to (my wife in my case), or you can sell it for close to what you paid for it, less reasonable usage and any wear and tear you inflicted on it. In my opinion, the performance increase is the real, and only legitimate reason to upgrade. And that is really only important for those who engage in 3D gaming. If you just play board games, there is really little reason to upgrade. Office apps are generally no going to noticeably run faster -- because they already run faster than you can discern. USER INTERFACE There is some visual differences from the native schemes between Lollipop and Marshmallow, which show up in Samsung's TouchWiz Interface. However, I run Nova Launcher on both machines, so for me there is very little visual difference between Lollipop and Marshmallow.. SETTINGS The settings are almost all the same in old or new version. However, the location of the settings has been slightly revised – but not so much as you won’t be able to find them close by. USER MANUAL The T-813 has a different User Manual than the T810. I put the two manuals side by side and did a page by page comparison. For the most part they both have the same information, just rearranged slightly different. NATIVE APPS Music Player. The new T813 does not have a native music player. Not to worry, just go to the Galaxy App store and down load one, or go to the Play Store and download your favorite music player. Compass. Neither the old or new Tab S2s have a compass app, but they both have a magnometer. So download your favorite compass app. Screensaver / Daydream. The T810 called it Daydream, the T813 calls it Screensaver – exact same function under SETTINGS >> DISPLAY Fingerprint sensor. The fingerprint sensor is much improved – more sensitive and faster on the new T813, over the T810. VIDEO To test the video question of whether the new T813 played video slower or faster than the old T810, I ran several 4k videos simultaneously, side by side. The 4k videos were taken by my cell phone, and the files were approximately 10Mbytes for a 1 minute video – so quite a lot of front-end processing would be required. In just about every case the new T813 would start up faster, for about a 2-seond lead. But once started, they both ran at the same frame rate per second. So, it appears to me, according to my tests, the new T813 starts video faster in the real world. BATTERY To test whether the battery on the T813 drained faster than on the T810, I set the screen brightness to 100% on both machines, set the screen timeout to max (10 minutes), loaded the same video in both machines, and then charged both batteries to 100%. Every 10 minutes I noted the Battery level. At first I had both sound levels at 100%, but I noticed the T810 at full volume was louder than the T813, so to keep that factor from muddying the results, I turned both sound volumes to zero. So the results after hours of continuous video playing is: - - - - - - - - - AFTER 1 HOUR - - - - - - - - - - - - - - - - - - - - - - - - - - - AFTER 5 HOURS T810 -- 86% charge remaining (14% depletion) - - - - - - - 16% charge remaining (84% depletion) T813 -- 89% charge remaining (11% depletion) - - - - - - - 32% charge remaining (68% depletion) So, it does look like the T813 has significantly better battery management than the T810 – at least for this test. So far, that is all I have found. And for me, it was worth the upgrade based on bragging rights and personal preference (but not necessarily based on logic). If I find more differences that are noteworthy, I will add it to this review. I would recommend this upgrade to a friend!