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Everything posted by ulorentz

  1. The requirements are simple: a quad-core with good frequency. What I need is run an intensive CPU program (it uses only cpu, not ram, nor sd). To the question why people buy slow device looking for performance, my answer (that fits just my case) is because I don't need a time efficient computer, but more an energy efficient (and, as you know better than me, ARM devices are more energy efficient than amd64); still I need not to be too slow, but a good ARM with performance and energy efficiency. Thanks again for answers! Ps: a good thing about NEO2 is that I have launched about 26hours ago a job that takes all four cores a 100% and temp is still at 55°C, running very smoothly and without problems (it has an heat sink and a small fan)
  2. Thanks for the very accurate answer. I wrote (few days ago) to the tech support of friendlyelec about that issue and they answered me in a very misguiding way: "Hi, The board now change the frequency dynamicly. More info you can see this link:https://forum.armbian.com/index.php?/topic/4263-nanopi-neo2-cpu-frequency/ https://forum.armbian.com/index.php?/topic/4734-nanopi-neo-plus2/ Maybe the link can help you. thank you! " What really upsets me is that they write on their site that the frequency is 1.5ghz. I have no problem with 1ghz (considering the very low price, it's still good for a 64 bit quad core ), just I don't like to claim things not true. For the rest, the board seems to work quite well: with the huge heat sink and a fan it doesn't get too hot using it at full load. Just a pity for the frequency things. I was looking for a performant board with low price, and this seemed the best one. Do you know any other comparable product? Not banana things, I had very bad experiencies with banana pi boards...
  3. Hi! I've recently bought a nanopi NEO2 which features an Allwinner H5. On FriendlyArm website (and on Allwinner's too) it is stated that the H5 is clocked 1.5Ghz. I need to perform some heavy job and and noticed that the cpu frequency hits, at full power, only 1Ghz. I checked using cpufreq-info and I got: driver: cpufreq-dt CPUs which run at the same hardware frequency: 0 1 2 3 CPUs which need to have their frequency coordinated by software: 0 1 2 3 maximum transition latency: 244 us. hardware limits: 120 MHz - 1.01 GHz available frequency steps: 120 MHz, 240 MHz, 312 MHz, 480 MHz, 624 MHz, 816 MHz, 1.01 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance, schedutil current policy: frequency should be within 120 MHz and 1.01 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.01 GHz (asserted by call to hardware). cpufreq stats: 120 MHz:58.40%, 240 MHz:0.75%, 312 MHz:0.82%, 480 MHz:0.47%, 624 MHz:0.65%, 816 MHz:0.64%, 1.01 GHz:38.28% (66) which clearly says that the cpu is limited to 1.01 Ghz by hardware. I am sure the allwinner H5 could reach 1.5, so the options are two: or friendly elec has limited by hardware their nanopi (in that case it would absolutely not fair to state on the website 1.5ghz) or it is limited by the kernel. Hoping the case is the second one (I bought two of them!), can you help me? Is there a way to compile the kernel allowing the true maximum frequency? Thank you very much