is it possible to run the unit with a fan ? I have a really cold environment or would it not boot up ?
You mean without a fan? It would run but it would probably be very slow and would restart alot and be unreliable. You need to move air over the heatsinks to remove the heat. If you have very cold air (sub 10°C you could use a slower quiet fan around 90CFM) You could probably even use the fan on the outside of the miner. I'd want to test it thats for sure. But I doubt you would get anywhere near 1.7TH |
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Does anybody have an inexpensive solution to SP-20 noise?
My house does not have a basement, so noise reduction or elimination is a must.
Thanks.
The only thing you can do is change the fan. There are some caveats 1. At the same ambient conditions there will be an increase in heat at the cost of hash power. 2. Unless you are handy with a soldering iron the fan won't go on the header on the controler board, so you need to power it from the PSU. 3. Noise is directly proportional to CFM, however the tone or type of noise can change even with a fan that has similar performance. That being said most of the 200CFM fans available have similar db output of between 59-65 db. e.g. Scythe Ultra Kaze 3000rpm 133CFM Fan intake from window, outside temp 6 °C  Mining Rate: 1506.37Ghs Temp Front / Back T,B 21 °C / 77,74 °C |
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Toom.im is now accepting SP20s for hosting. If you need a power supply, we can supply one for $100. How much for an SP20? I guess around $110-$120 for a 1 month contract? Something like that. I haven't had a chance to meter any SP20s yet. I expect there's a wider range of efficiency/performance options available with the SP20 than the SP30, so how much we charge may end up depending on how it's configured and how efficient the PSUs we end up using are. (I hope they'll be around 92% efficient.) LOOP[5] ON
15: disabled (Asic all engines fail BIST)
16: DC2DC/1/:[vlt1:705 vlt2:711(DCl:794 Tl:794 Ul:759) 73W 103A 57c] ASIC:[ 85c (120c) 790hz(BL: 790) 53 (E:193) F:0]
17: DC2DC/1/:[vlt1:708 vlt2:711(DCl:794 Tl:794 Ul:759) 64W 91A 47c] ASIC:[ 85c (120c) 695hz(BL: 695) 48 (E:193) F:0]
This happens on occasion. Unless the ASIC is physically damaged, it should recover if you restart minergate. Firmware 2.5.12 has this problem less frequently than 2.5.6, but they all can get it for different reasons. If it's a regular problem, you can set up a script or cron job to restart minergate once a day or something like that. Restarting minergate doesn't have any effect unfortunately. The only way I've got it to come back on is to disable it in the Asics Control Panel, and then enable it. Then it comes on for a short while and then disables itself again. |
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is namecoin working again  I received a payout recently. M Confirmed, just had a big backlog Namecoin payout on the 9th November and some dust yesterday. Thanks! |
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You really need to be looking at specialist bitcoin hosting setups. You may need to ship your units there but the overall monthly savings compared to a regular datacenter can be substantial. http://toom.im/ is a popular one at the moment, I think they charge $99/KW of power usage as a flat fee with no extra charges. There is also an entire thread about bitcoin hosting here with lots of options one of which may suit your needs: H/w Hosting Directory & Reputation |
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Toom.im is now accepting SP20s for hosting. If you need a power supply, we can supply one for $100. How much for an SP20? I guess around $110-$120 for a 1 month contract? On another front, just checked my SP30's and one has an ASIC error. Not too cold in there, input temps constant since setup at around 20°C Got this in Asics Stats LOOP[5] ON
15: disabled (Asic all engines fail BIST)
16: DC2DC/1/:[vlt1:705 vlt2:711(DCl:794 Tl:794 Ul:759) 73W 103A 57c] ASIC:[ 85c (120c) 790hz(BL: 790) 53 (E:193) F:0]
17: DC2DC/1/:[vlt1:708 vlt2:711(DCl:794 Tl:794 Ul:759) 64W 91A 47c] ASIC:[ 85c (120c) 695hz(BL: 695) 48 (E:193) F:0]
And from Logs:
Nov 13 01:20:18 miner local1.warn minergate[9558]: -------- SOFT RESET 10.5 -----------
Nov 13 01:20:20 miner local1.warn minergate[9558]: Critical: JOB f000001 stuck, NOT killing ASIC
Nov 13 01:20:20 miner local1.warn minergate[9558]: Disabling engines on ASIC 15: 0-0-0-0 0-0-0
Nov 13 01:20:20 miner local1.warn minergate[9558]: Called disable ASIC reset in_reset:1
Nov 13 01:20:20 miner local1.warn minergate[9558]: Critical: Asic disable 15: Asic all engines fail BIST
Nov 13 01:20:20 miner local1.warn minergate[9558]: Disabing ASIC forever 15 (0xf) from loop 5 (Asic all engines fail BIST)
Nov 13 01:20:20 miner local1.warn minergate[9558]: RESTART ASICS DONE
Nov 13 01:20:20 miner local1.warn minergate[9558]: -------- SOFT RESET 11 -----------
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This is the first time I have ever seen SP lower prices. And it wasn't a little at a time, it was just one big drop. I could be mistaken about them lowering prices, but I don't remember. Old age starts to melt away brain cells.
No, they always do it. Sp-30 for July were $11000>$4500 Aug>3900 Oct If its "in stock" why do you have to wait 10 days before it ships. SP always build to order AFAIK, and the SP20 is no different. |
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It's looking more certain that what we've been seeing in our DC is a poor reaction of SP30s to temperatures below about 6°C. We haven't seen any issues with SP10s yet at these temperatures.
Some machines work fine at low temperatures. I've seen a few operate just dandy at intake temperatures as low as 2°C. However, others will show problems at intake temperatures as high as 8°C. When a machine has trouble at low temperatures, it's often specific ASICs that show the problem (often #2 and #17). It's not always the ASICs in the front that have issues, though it seems more common to be those. Once an ASIC has trouble at low temperatures, it sometimes has trouble even when warmed up. Sometimes it has to be disabled permanently; other times it can be enabled once the machine is warmer. Indeed, but a hardware to be reliable, must handle 25°C variation without too much trouble.Here at low temperature some ASICs can't start. It will be a good idea to add a 'delay' option for the troublesome ASICs where they are turn off during the cold start and enabled later. Adding an option to change the Fan speed according to the intake temperature, will be a good too idea too. (I suspect this issue to trigger some machines crashes when minergate restart). We're investigating. I see the same issues at higher temps : 24c to 30c , I disabled the troubled asics and still every few hours when I check the machines half the Asics will report failed , sometimes all with the machine not even mining at all. Its a deeper issue with the firmware than just temps I think. Getting really frustrating at this point basically tried everything to keep it stable but nothing seems to work. I have to bounce it every few hours but I don't have time to babysit it I have other stuff to do. Maybe you just have a dodgy one. They happen even in the best of products. My SP20 is running at near 40°C on the intake with no disabling of ASICs |
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So how thik is this, 3u?
Each half unit is 7.4U, so 15U for 7.2TH. Thanks for clarifying.. so 3U per unit, plus 1.4U for the racking and controller? Hosting costs will be a nightmare unless they can host it for free themselves.. Hell shipping costs are going to be enormous! +1 Nothing to see here. Train wreck. New or premined units? That is a fair question to ask given how LATE these are compared to other offerings something just doesn't smell right. Seems to be desperate ploy to dump either old hardware or weak large inefficient miners to the community. Avoid it. Golden Nonce ASIC | HashFastReally? Not sure that is a good sign. Who runs Bitcrane? They have been selling systems with hashfast ASIC's for quite a while now. They are based in China. http://www.bitcrane.com/article.php?id=5 |
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So how thik is this, 3u?
Each half unit is 7.4U, so 15U for 7.2TH. Thanks for clarifying.. so 3U per unit, plus 1.4U for the racking and controller? Hosting costs will be a nightmare unless they can host it for free themselves.. Hell shipping costs are going to be enormous! I don't have any more info than you, going off the specifications. Weight per unit (so 2 of them per 7.2TH) is about 20kg packaged each and likely 25 or 26kg volumetric each. Shipping to the US: Product total: $4668.00 + Insurance: $28.01 + Shipping Cost: $385.29 Total Amount Due: $5081.30Shipping to the UK: Product total: $4668.00 + Insurance: $28.01 + Shipping Cost: $578.96 Total Amount Due: $5274.97 |
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So how thik is this, 3u?
Each half unit is 7.4U, so 15U for 7.2TH. Thanks for clarifying.. so 3U per unit, plus 1.4U for the racking and controller? Hosting costs will be a nightmare unless they can host it for free themselves.. Hell shipping costs are going to be enormous! |
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 ))))) u guys are killing me! So how thik is this, 3u? No the entire 7.2TH is generated by 4 of those 3/4U sections, plus another couple of 1U used up by the bottom shelf bit and the top controller. So anything between 14 and 18U depending on how big each section is. |
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So hang on, each one of those units is what 3U or 4U in height? And all together it looks to take up to 15U in rack space?  Uses between 4600 and 7800W And generates between 5.4 and 7.2TH/s of performance? [edit] WTF where did that post go? |
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Works great with the SP20
Got any closer to a new release chaps?
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Looks like all is good in the neighborhood again.
*kicks the old switch down the hallway...*
I had a port go on one of my switches on the weekend.. wierd. |
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Version 2.5.12 became the official, 2.5.6 removed and 2.5.13 is the latest experimental.
2.5.12 - different handling of BIST and Murata flow - improves stability.
2.5.13 - sets default (after factory reset) values to 1275/288 in SP3x/SP2x. Redirection bug fixed. Handling of ambient temperatures lower then 0c added.
So which firmware should I install on an Emerson PSU set I currently have 2.5.1 and its still unstable not getting more than 3TH and asics keep failing with that loop error. I rue the day I updated my firmware when I was happily hashing at around 4.5 TH for months. Is there a process to roll back? |
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{snip raving}
Not sure why the aggression. Shouldn't worry, its his modus operandi. Could be mild Tourettes mixed in with narcissistic tendencies. I don't put many people on ignore. |
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Imo, the sp20 is a tempting offer in comparison, but the noise and low buying power of. A bitcoin right now are holding me back. Anyone managed to sub in quieter fans to make this acceptable for living in the same floor of a house with?
...
Gone from 1.3x to 1.5x 1.665TH and climbing now, back temperatures gone from 37 to 67°C 77°C!
Keep your room cozy and warm in the winter ... I am going to have to do something about the fan though, this thing is loud! Louder than all my other miners combined. If I can't do anything about it I'll have to sell it I think  This is the fan used in the SP20.. beast of a thing!  Damn, fan uses a 4pin PWM Graphics card type header. Going to have to get one of these if I want to try other fan types:  PWM Fan Adapter for VGA Cooler Fan Don't buy this adapter its a different fitting on the SP20 Good news is that it runs without anything plugged into the header so I'm testing another solution Latest update (from other thread) I've currently got two Coolermaster Jetflo 90+CFM fans powered from the PSU, one replacing the internal fan and one on the outside pushing air in at the back. Not-so good news is thats not enough airflow to keep the unit performing at spec, sweet spot seems to be just under 1.4TH Temp Front / Back T,B 33 °C / 86,87 °C But its now normal miner sound levels I've got two other fans to try out at between 120-150CF<, still haven't got the connector sourced, its some sort of wire to board molex micro or pico connector, I guess you could solder the custom connector onto the fan wires if you wanted a stock look. At the moment the wire comes out the side of the lid and to a 4 pin molex from the PSU, not pretty but I'd rather quiet than pretty. Hopefully will get a chance to test the new fans today, so can update with pics. |
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Issue for SP20... noisy?
Just the 212 CFM 61db fan  Otherwise quiet as a mouse |
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new SP20 price! $795
with discount code and shipping of 2 units (3.4TH): 4.5 BTC
7* bitmain S3+ units (3.4 TH) with coupons and shipping this week = 4.7 BTC
4* Bitmain C1 (4TH) with watercooling and shipping this week = 5.3 BTC (4.64 for 3.5TH)
wrong math1x SP20 price! $795+shipping 1700GH/s 2x C1 price $800+shipping 2000GH/s Which one is more GH/s ? Which one requires extra components not mentioned in the price? Both require a PSU, 2x C1 need 2 liter distilled water+200ml antifreeze. And C1 is silent.But I look forward to Antminer S5, which goes on sale 15 November Don't the C1 need pumps and radiators as well? |
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