each of the two PSU draws only 220W on wall! With only 440W I can get 940GH
That is the lowest I have seen. Wow that is a impressive under clock.
Topic: [Review] Spondoolies SP20 review - A Green miner with a Loud fan - page 10. (Read 20980 times)
December 17, 2014, 12:24:52 AM
That is the lowest I have seen. Wow that is a impressive under clock.
December 17, 2014, 12:20:19 AM
And the amazing thing with SP20:
each of the two PSU draws only 220W on wall! With only 440W I can get 940GH, e.g. 0.47J/GH on Wall. A 20nm very efficient Knc Neptune running 3.3TH at 1900W on wall, that is barely 0.58J/GH. And SP20 at 1.4GH draws around 800W, on par with Neptune, it is definitely a nice choice given the current market price of $659 per unit, very well engineered product!
each of the two PSU draws only 220W on wall! With only 440W I can get 940GH, e.g. 0.47J/GH on Wall. A 20nm very efficient Knc Neptune running 3.3TH at 1900W on wall, that is barely 0.58J/GH. And SP20 at 1.4GH draws around 800W, on par with Neptune, it is definitely a nice choice given the current market price of $659 per unit, very well engineered product!
December 16, 2014, 11:58:37 PM
Naturally, I thought the PSU is not enough strong, so I took another 1300W PSU and tested, same fault
Then I saw on "Settings" page, I could select "Basic Voltage settings" and then pick the "slow fans, medium rate" option, restarted miner. Immediately it hashes at 1.4 GH!
So I think there is a bug in that advanced setting page, it does not recognize the PSU even I put 120 in all of the fields, and by using basic voltage settings, all those fields turned to 1100
Then I reduced all the voltage to 0.6 and the unit run at 940GH/S, ASIC stats looks like this
Then I saw on "Settings" page, I could select "Basic Voltage settings" and then pick the "slow fans, medium rate" option, restarted miner. Immediately it hashes at 1.4 GH!
So I think there is a bug in that advanced setting page, it does not recognize the PSU even I put 120 in all of the fields, and by using basic voltage settings, all those fields turned to 1100
Then I reduced all the voltage to 0.6 and the unit run at 940GH/S, ASIC stats looks like this
December 16, 2014, 11:47:54 PM
I have only two spare 500W PSU left from old time BFL singles bundle (They were so generous at that time that they even delivered a PSU with their unit, I never used them 
)
I hook them up, started miner and went to the Settings page, lowered all the voltage to minimum (0.58) and filled in 200 in all 4 field: "Max PSU Power Unit 1 (70W - 288W) ", and restarted miner. It turns out the miner only runs at 370GH and by looking at ASIC stats page, two of the ASIC loops are not working:
)I hook them up, started miner and went to the Settings page, lowered all the voltage to minimum (0.58) and filled in 200 in all 4 field: "Max PSU Power Unit 1 (70W - 288W) ", and restarted miner. It turns out the miner only runs at 370GH and by looking at ASIC stats page, two of the ASIC loops are not working:
December 16, 2014, 11:36:37 PM
The connectors, one serial for testing purpose I guess, USB, SD, LAN, all described in SP 20 quick start manual (It seems I could not find the user manual from Spondoolies website)
December 16, 2014, 11:32:51 PM
* john cries from the amount of nice photos everyone else seems to be able to get*
PS: Oops, tell me if you want me to delete this post as I might be blocking your review chain.
PS: Oops, tell me if you want me to delete this post as I might be blocking your review chain.
The camera was used to capture pretty girls, now girls are gone and only miners left
December 16, 2014, 11:31:37 PM
The whole unit weights exactly 5.0 kg, very easy to carry around
December 16, 2014, 11:30:49 PM
* john cries from the amount of nice photos everyone else seems to be able to get*
PS: Oops, tell me if you want me to delete this post as I might be blocking your review chain.
PS: Oops, tell me if you want me to delete this post as I might be blocking your review chain.
December 16, 2014, 11:28:30 PM
Back end
December 16, 2014, 11:27:53 PM
Front end
December 16, 2014, 11:26:09 PM
Just received my SP20 a couple of days after the review campaign, delivered from Israel directly to Sweden without any custom charge!
Packaging is compact and sturdy, very well protected
Packaging is compact and sturdy, very well protected
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