Danke vielmals / spasibo for your most excellent thread.
Are you certain that these stock fans are 105 CFM?
The 3 howling banshees in my basement are between 72 - 78db with the stock fans and NEVER EVER seem to go at less than 3800 rpm (not overclocked either, all is stock) at a temp of about 48 - 52C.
Hi! Glad to see your post here!
That was a reply to
this post. There is the stock fan coming with S5 on the photo. It's
about 140 CFM. As for the Navipower HDB-1212UA fans - they seems to be 105 CFM. But now my choice is cheap but effective fan Gembird DC120SF-12AS3 (you can see
here the results of using it). Even two of them since I moved the S5 from living room to another place where the noise is not the problem.
I don't understand why a scythe rated at 133cfm is not sufficient for cooling as some users have claimed in other threads.
How has it been believed by them that 133 CFM rated fan was not sufficient? May be the reason is unsufficient static pressure level?.. I don't know...
I expect some used Apple 4 pin Delta AFB1212HHE-F00 sometime this week, that are rated
2900 RPM 120.07 CFM 44 dBa and hope they will do a better and MUCH, MUCH less noisier job.
Yeah, they should.
I'm also not as brave as you to run the miners at anything over 70C.
If the datasheet of BM1384 chips is correct, 70C temperature is not a problem. But sure in case of silicon-based circuits we should seek for lower temps... But the noise...
You know, in case of aluminum heatsinks it should look like in Avalon4 - less quantity of more solid fins (maybe narrowed to the ends).
In case of S5 we somewhy have high temps and high noise. It's inevitable.
Thank you for your courage, and I will be looking forward to your further documentations of your experiments. (are you giving the vertical orientation of the miners any consideration?)
How can it help, especially in case of not so appropriate heatsinks?.. I think that if you can place them in that way, vertically-oriented, it's better that horyzontal orientation, bot not so much better.
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