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M.FB

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  1. Hi again, as expected (I'm not known for my ability for DIY when I work with small things), after try to make some arrangements in the Style A fan I've broken the fan I ended putting the R2S behind my old Synology NAS, I took a plastic box and did some holes to pass the NAS cables and use the box as base to put the R2S is just in from of the NAS fan, is this called synergy ? . To avoid put the R2S just on top of the plastic I've used the original heat-sink to raise the device a bit. Also I've configured the CPU from Min: 600M/Max: 1.500 to Min:400/Max:1.300 (as FE suggests in the spec sheet), and set the governor mode to conservative, the difference is not too much when the cpu is idle, but after set the max speed to 1.300 the drop in the temp is noticeable on full load: Idle: 41-43 With high load: 65-68C. This crappy setup works for me and is quiet , the R2S is running pi.hole, transmission-daemon, minidlna, iperf and sometimes amuled so most of the time the load is low. The difference between put the R2S behind the Synology fan or not, is about 4-5C when is idle and 8-10 C on full load. Attached the log testing with "stress -c 4". BR r2s_temp.log
  2. Hi devman, I've seen your first comment about this, I'm looking for something like this that fits in the micro holes on top of the heatsink but I don't find anything with the required diameter. BR
  3. Hi again, As @devman noted the fan for the Style A is noisy, and knowing that I cannot expect too much for the price, at least in my case the quality is very very poor, I'm waiting for Friendlyarm to make available a metal case for NEO3, and will order a NEO3 with metal case an the Style B metal case for the RS2. The fan is noisy but helps (attached logs), testing with "stress -c 4" the temperature rises gradually and does not exceed 82C, maintaining the maximum speed at all times, it drops immediately when there is no load. Without fan the temperature immediately rises to 83C-85 C and the cpu suffers to maintain the maximum clock speed, although it is not really remarkable, without load it takes a long time to return to normal values and it costs a lot to drop from 50C. In brief, this option is completely silent and works fine if you made a big square hole on top of the yellow case, but after less than 4 months the fan started to fail and the noise is simply insupportable: This one also works fine, obviously better with the fan connected, but the quality is poor (for example screws are not long enough to maintain the fan flat) and the fan is noisy, who knows how many time will be working fine the fan: Yep, at the end I will spent more in cases and fans that in the SBC BR. style_A_without_fan.txt style_A_with_fan.txt
  4. Thanks @devman, them I've selected the wrong option because the fan I'm using right now was really silent until started to make noise, and when is idle the temp is ~ 42c-45c, as the case in on route I'll give a chance.
  5. Yes, very true, I'm using the original heatsink for the same.
  6. Thanks for the feedback @poddmo. I've asked about the metal case+fan because of the Javin's comment, I don't really know if we can trust the nice graphs that the Friendlyelec guys posted in his shop, but according to your feedback those graphs can be real. I think I will try something like the Style A, I will rum some test with and without the fan: If finally I need to go for the Style B, I will spent more in cases and fan than in the SBC itself BR
  7. Hi all, An update about my experience with the cheap fan I've found in a well know Chinese online market, at that time was the only one I've found and the metal case was not available: Three months and a half later the fan started to work really noise, is doing the job and the temp is ~ 40ºC without load, but the noise is annoying. Time to go for the metal case, the question is, with or without fan?
  8. Hello all, Just want to add my experience to this interesting post. First I've did a lot of holes in the yellow case as @ahtoh did, same behavior, then I've got a heatsink with fan, with this the temp in a idle status drops to ~40º just after boot, the temperature on the room is 22ºC-24ºC: Time CPU load %cpu %sys %usr %nice %io %irq CPU C.St. 2:27:40: 1200MHz 0.34 9% 4% 4% 0% 0% 0% 43.2°C 0/6 22:27:45: 600MHz 0.31 3% 0% 2% 0% 0% 0% 40.5°C 0/6 22:27:50: 600MHz 0.29 1% 0% 0% 0% 0% 0% 41.4°C 0/6 Yes, I've removed the screw that is in the heatsink :-) I've put the R2S in the drilled box, more or less the same temp while the CPU was idle, perhaps a couple of degree more, but once the CPU was working with load, the fan was not able to dissipate the heat and once again, ~60ºC while the CPU was idle. As workaround I did a big square hole just on top of the heatsink, whit this the temp raises up to 86ºC on full load, the CPU suffer to maintain the max MHz but returns to ~45ºC once is idle: Time CPU load %cpu %sys %usr %nice %io %irq CPU C.St. 22:15:09: 1200MHz 1.01 7% 0% 7% 0% 0% 0% 53.3°C 0/6 22:15:14: 600MHz 0.93 1% 0% 0% 0% 0% 0% 50.8°C 0/6 22:15:19: 600MHz 0.85 2% 0% 1% 0% 0% 0% 52.5°C 0/6 22:15:24: 600MHz 0.78 1% 0% 0% 0% 0% 0% 50.4°C 0/6 22:15:30: 600MHz 0.72 4% 2% 2% 0% 0% 0% 51.2°C 0/6 22:15:35: 600MHz 0.66 1% 0% 0% 0% 0% 0% 51.7°C 0/6 22:15:40: 1512MHz 0.93 60% 0% 59% 0% 0% 0% 78.5°C 0/6 <== stress -c 4 start 22:15:45: 1512MHz 1.18 100% 0% 99% 0% 0% 0% 81.9°C 0/6 22:15:50: 1512MHz 1.40 100% 0% 99% 0% 0% 0% 80.8°C 0/6 22:15:55: 1512MHz 1.61 100% 0% 99% 0% 0% 0% 84.6°C 0/6 22:16:01: 1296MHz 1.80 100% 0% 99% 0% 0% 0% 85.0°C 0/6 22:16:06: 1512MHz 1.98 100% 0% 99% 0% 0% 0% 84.2°C 0/6 22:16:11: 1512MHz 2.14 100% 0% 99% 0% 0% 0% 83.8°C 0/6 22:16:16: 1512MHz 2.29 100% 0% 99% 0% 0% 0% 85.4°C 1/6 22:16:21: 1296MHz 2.43 100% 0% 99% 0% 0% 0% 84.6°C 0/6 22:16:27: 1512MHz 2.55 100% 0% 99% 0% 0% 0% 82.7°C 0/6 22:16:32: 1512MHz 2.67 100% 0% 99% 0% 0% 0% 86.2°C 1/6 22:16:37: 1512MHz 2.78 100% 0% 99% 0% 0% 0% 85.0°C 1/6 22:16:42: 1296MHz 2.87 100% 0% 99% 0% 0% 0% 83.8°C 0/6 22:16:47: 1512MHz 2.96 100% 0% 99% 0% 0% 0% 84.2°C 0/6 22:16:52: 1296MHz 3.05 100% 0% 99% 0% 0% 0% 86.2°C 0/6 22:16:58: 1512MHz 3.12 100% 0% 99% 0% 0% 0% 83.8°C 0/6 22:17:03: 1296MHz 3.19 100% 0% 99% 0% 0% 0% 85.4°C 0/6 22:17:08: 1512MHz 3.26 100% 0% 99% 0% 0% 0% 84.6°C 2/6 22:17:13: 1512MHz 3.45 100% 0% 99% 0% 0% 0% 83.1°C 1/6 <== stress -c 4 stop 22:17:18: 600MHz 3.17 19% 0% 18% 0% 0% 0% 62.1°C 0/6 22:17:23: 600MHz 2.92 1% 0% 0% 0% 0% 0% 58.2°C 0/6 22:17:29: 600MHz 2.68 1% 0% 0% 0% 0% 0% 56.4°C 0/6 22:17:34: 600MHz 2.47 1% 0% 0% 0% 0% 0% 56.8°C 0/6 22:17:39: 600MHz 2.27 1% 0% 0% 0% 0% 0% 56.4°C 0/6 22:17:44: 600MHz 2.09 0% 0% 0% 0% 0% 0% 55.0°C 0/6 22:17:49: 600MHz 1.92 0% 0% 0% 0% 0% 0% 54.2°C 0/6 I've asked to FriendlyARM and they told me that are working to offer a metallic case. Best regards (and sorry for my english) :-)
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