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Showing results for tags 'nanopineo4'.
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Hey fellas I have FOUR different armbian devices (one official armbian, three running ophub's armbian) which all seem to struggle with network throughput at high latency connections. It is not a cpu issue and this doesn't occur on x86 debian. Here's the odd thing. If I connect an ethernet usb dongle, like rtl8152b I get the full throughput even at high latency. What??? So it's a nic issue? I thought maybe the onboard ethernet isn't well supported by the kernel so I got a nanopi neo4 with onboard realtek gigabit running official armbian 6.12.3x ... AND it's slow too. Any onboard nic with armbian is slow in my tests. With slow I mean that a single connection gets 5-10Mbit. With a dongle I can get up to 100Mbit on a SINGLE connection from the same device. Why is a usb realtek dongle better supported than onboard realtek gigabit? I don't get it. Does anybody have an idea I could try? What's really difficult is that the problem only shows up at high latency. If I set up a new device at home (low latency) I get full throughput, but when it's in another country 200-300ms latency it just slows down to 5-10Mbit. The workaround with a dongle was just a fluke accident that I happen to notice. I truly believe armbian has a bright future but right now I'm tempted to go back to x86 for my needs and I'd rather not because arm SHOULD be better than x86 for IoT (my use case). Thanks for helping me figure it out. Love your work!
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Hi. This video (Raspberry Pi 4 RAM Upgrade - Tutorial) is about upgrading Pi RAM from 1GB to 8GB, and it is inspired me to investigate possibility to do this for other boards. If anyone has any ideas and knowledge, please share it with us. I personally interested in NanoPi NEO4 with RK3399 CPU and with 1GB RAM Schematic for looking at RAM and board wiring. RAM consist of 2 512Mb chips on one channel (second channel on this board is not used) RAM Chips: K4B4G1646E-BCMA 4Gbit(4096bit/8=512Mb) DDR3-1866 96Ball FBGA. CPU supports DDR3, DDR3L, LPDDR3, LPDDR4. There are at least 1GB DDR3 chips out there. (not sure about 2GB, and probably no 4GB) There is no question that larger DDR3 with same specs should just work (DDR3-1866 96Ball FBGA.), unless somehow not compatible with wiring or datasheet specs. What about other types, DDR3L, LPDDR3, LPDDR, are they different pinout layout or board design might be incompatible? Any chip recommendations ? I probably could answer all these questions with more time spend researching, maybe someone could tell right away. And here is just few existing chips that i found that could maybe be possible as replacements (not verified) H5TQ2G63DFR-PBC FBGA96 SDRAM DDR3 2 Гб MT41K1G16DGA-125 B5116ECMDXGJDI http://www1.futureelectronics.com/doc/Kingston/B5116ECMDXGnnn-U-v1.3.pdf EM6HF08EW3A https://etron.com/industrial-dram-pl/ddr3-sdram/
