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may

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    may reacted to NicoD in Xulong Linux 4.9 images for H6   
    I've just installed it, and first impression is, it isn't much better than before.
    It's unstable. Runs at 1.5Ghz, but seems a lot slower than others at the same speed. 1.8Ghz isn't possible anymore.
    Temperatures are of course better now.
    Here a 7zip benchmark with stock settings.
    orangepi@OrangePi:~$ 7z b 7-Zip 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=C,Utf16=off,HugeFiles=on,4 CPUs) RAM size: 1980 MB, # CPU hardware threads: 4 RAM usage: 850 MB, # Benchmark threads: 4 Dict Compressing | Decompressing Speed Usage R/U Rating | Speed Usage R/U Rating KB/s % MIPS MIPS | KB/s % MIPS MIPS 22: 1667 286 567 1622 | 35573 263 1218 3209 23: 1766 313 575 1800 | 45386 344 1206 4153 24: 1704 315 581 1832 | 44655 345 1200 4142 25: 1547 299 591 1767 | 38169 302 1189 3589 ---------------------------------------------------------------- Avr: 303 578 1755 314 1203 3773 Tot: 308 891 2764 It performs very badly. 2/3 of what it should be at 1.5Ghz.
    I've then set the governor to performance and everything starts to lag like crazy. 7-zip results are very bad.
     
    orangepi@OrangePi:~$ sudo cpufreq-set -g performance orangepi@OrangePi:~$ 7z b 7-Zip 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=C,Utf16=off,HugeFiles=on,4 CPUs) RAM size: 1980 MB, # CPU hardware threads: 4 RAM usage: 850 MB, # Benchmark threads: 4 Dict Compressing | Decompressing Speed Usage R/U Rating | Speed Usage R/U Rating KB/s % MIPS MIPS | KB/s % MIPS MIPS 22: 551 85 628 536 | 10925 82 1209 985 23: 566 89 647 577 | 11939 90 1214 1092 24: 506 83 658 545 | 11711 90 1208 1086 25: 529 89 676 604 | 11491 90 1197 1080 ---------------------------------------------------------------- Avr: 87 652 565 88 1207 1061 Tot: 87 930 813  
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    may got a reaction from iamwithstupid in Orange Pi Lite2 - heatsink?   
    I bought a large heatsink size 37*37*24mm and modified with my dremel. And then connect the heatsink and the soc with a pice of copper and 3M™ Thermally Conductive Adhesive Transfer Tape 8810.
    I've learned that both the ap6255 module and the ddr ram onboard generates lots of heat.
    ap6255 gets overheat under heavy load and stop working until core temperature drops under alert temperature without a proper heatsink
     
    this brand is called "Your Cee" on aliexpress
     
     

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