The 636 has much faster multi core and most importantly single core performance compared to the 801.......
Will have a look @ the s9 (assuming it should be cheaper because Samsung dropped the S10 so quick after the S9) and also a Snapdragon 845 variant. To be honest, from what I have read, from the benchmarks on gsmarena, a Snapdragon 636 is the minimum that I need - this chipset seems to give very close scores to the chipset that is in my S5 (Snapdragon 801, circa Feb 2014).
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