replacing the stock fan with a single Noctua ($24.5 on Amazon) makes it much less loud and changes the metallic banging sound of the stock fan to whooosh, although temperatures rise to ~60C and you have to hash at 325 mhz(1075 GH). I am waiting for a second fan to add pull and go back to 350mhz or even higher. http://www.amazon.com/Bearing-NF-F12-iPPC-3000-PWM/dp/B00KFCRATCThanks for the suggestion, but It's now summer here and mine would fry with that weak a fan (it was 41 degrees C here a couple of days ago). I happen to have quite a few noctua fans in use for other hardware and some spares. While you can design better fans there is still a certain amount of airflow and air pressure you need to generate and this fan wouldn't cut it. Oh, OK, the temp in my "mining" room is 30-31c and it is an improved 3000 PWM, not typical 2000PWM model; it provides ~ 171 110 CFM. I will post here once I add cheap deltas for the pull (klondike_bar suggested putting the scotch tape around the top to make a "shroud", which might help cooling). Anyway, I just wanted to see if I can host more with extra/new fans (with the default fan I simply can't). |
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The market cap of bitcoin is tiny in wall street scale. Their "not very much" is huge could move bitcoin markets. If there is money to make, they will be in.
They are clearly making a small bit of money on the short side right now, but I am talking about serious money with billions invested. You raise a good point about the company and platform thing. People like a personality cult figure they can rally behind when times are good and blame when times are bad. Who do we praise and villainize when BTC is going or not going the way we like? There is no CEO or board of directors to oust when shareholders are unhappy. exactly, but nature abhors vacuum, so somebody will step up (please, please let it be someone else and not AA- he is a bit of a preacher type). exchanges better move quick to do us a solid for this mess costing us at least 16% decline in value. |
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This theory sounds a bit premature considering the stamp conundrum, which explains the crash quite well (somebody dumped the stash!)
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myminer.io which re-directs to spondoolies-tech.com / sails ORM finds your miners for you. how often do these miners phone home and what information is being sent ?
* Device ID * LAN address * External (WAN) address * Firmware version It can be disabled in settings. once on initial firmware, my SP20 periodically connected by itself to something called BusyBox, which from the looks of it was some automated SPT program. It (connection or call upon) only occurred when apparently something was going wrong with the miner. I did not mind because connections like this probably help SPT to improve the software, but to see the connection was entertaining: "ET called home". I wonder if someone else saw the BusyBox making an appearance. I haven't seen it since 2.5.50ish, but did not look too closely because hashing is OK. |
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Kind of bummed that before my three pack of sp20s shipped, the price was reduced $405
::sigh::
...you will like them anyway  |
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Worker Name Work Diff Last Share Shares Diff Invalid Block % Hash Rate
bgibso01_SP20-1 1.37k 1s 11,052 15,097,032 0.145% 0.071% 1.64THs
bgibso01_SP20-2 1.02k 9s 10,717 14,135,656 0.137% 0.067% 1.51THs
bgibso01_S5-2 1.02k 5s 10,485 10,736,640 0.361% 0.051% 1.15THs
bgibso01_S5-1 1.02k 1s 10,161 10,404,864 0.392% 0.049% 1.11THs
Don't know. My S5 units are running stock and in spec. SP20s are running great. The 1.7T is not reachable in my environment, but 1.5-1.6 is easy. That ability and better construction makes the SP20 worth a premium over the S5. But how much?
you can ask the question differently. Depending on your circuits, you can put one SP-20 (downlocked to ~1.27-1.3Th and 700W) AND one S5 on one 110/120v/15A circuit, OR two Sp20 at 800W (1.36 Th) on a 20A circuit. I think depending on what circuits are available and where (rooms, garage, shed) the optimal set of miners might be specific for each situation. My take: if you like to fiddle with software and typically need good support-SP20 is for you-endless possibilities in adjusting. If you like physical mods-S5 might have an edge as you can build a shroud, try different fan combos, etc. To my ears, S5 sound (at default) is much worse than Sp20 (at least at setting 30), but S5 may sound better with a third party fan. |
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Offtopic: Until Bitstamp resumes where do Europeans go to exchange their BTC to fiat? I only user Bitstamp and GOX in the past and I don't know of any other reliable european exchangers.
Kraken-not sure how reliable it is and it is in US geographically (San Fran), but , paradoxically, mostly trades in BTC/euros. I don't like the fact that they [coinbase] take a peek into my transactions. and who doesn't? they all do now due to regs. |
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The current/on going reduction in bitcoin price had me thinking this weekend about our vendors. Remember the good old days of Bitmain pricing merchandise in bitcoin instead of USD? Yes there are wild fluctuations in btc price, but if the vendors don't think enough about it to use it as value instead of basing products on USD, why should anyone else? Just something to think about.
it is difficult to price item in something this volatile, but great for transmission. In any case, I don't know what they and coinbase are basing the price of BTC off right now? OKCoin?, btce? Bitmain's website is currently about $8/btc lower than Coinbase. i see roughly the same price on bitmain (267.23) as on coinbase website ~267-268 and on btc-e/okcoin |
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With BTC dropping down to ~$300 USD, this seems like a good time to buy via fiat. Looking to pick up at least another... PM'd !
why would it be better to buy in fiat and effectively pay premium when you can instant buy BTC on coinbase? |
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cool, but SP20's price is no longer competitive
the bitmaintech price drop for the s-5 was very big. Don't forget you get what you pay for. Bitmain hardware, unfortunately, now has a reputation for being lower quality. Also their customer service tends to be pretty poor as well. M Yeah, saw that. It changed after I placed my 4 unit order through the GB. I would have thought a GB would be better pricing than 3 unit orders.  it was just a couple $ less per unit sans GB fee. |
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The current/on going reduction in bitcoin price had me thinking this weekend about our vendors. Remember the good old days of Bitmain pricing merchandise in bitcoin instead of USD? Yes there are wild fluctuations in btc price, but if the vendors don't think enough about it to use it as value instead of basing products on USD, why should anyone else? Just something to think about.
it is difficult to price item in something this volatile, but great for transmission. In any case, I don't know what they and coinbase are basing the price of BTC off right now? OKCoin?, btce? |
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Offtopic: Until Bitstamp resumes where do Europeans go to exchange their BTC to fiat? I only user Bitstamp and GOX in the past and I don't know of any other reliable european exchangers.
Kraken-not sure how reliable it is and it is in US geographically (San Fran), but , paradoxically, mostly trades in BTC/euros. |
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Are there any s-5 coupons? I saw something about s-5 coupons can't find it now.
Yes their are S5 coupons for customers who bought early … Bitmain trying to draw in repeat customers after being burned by bitmain lowering the price . Bitmain needs to come up with a different way to reward past customers because the coupons are becoming more of an insult if anything . are you kidding? $30 coupon is an insult? This is not a S3/S2 coupon rain, they only give numbers equal to batch 1-3 that you ordered at much higher price. |
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If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.
replacing the stock fan with a single Noctua ($24.5 on Amazon) makes it much less loud and changes the metallic banging sound of the stock fan to whooosh, although temperatures rise to ~60C and you have to hash at 325 mhz(1075 GH). I am waiting for a second fan to add pull and go back to 350mhz or even higher. http://www.amazon.com/Bearing-NF-F12-iPPC-3000-PWM/dp/B00KFCRATC |
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There are 12 hrs left in the new years group buy. Someone can buy the miner for $500 a piece and get free shipping. Although 2 is the minimum quantity. You may want to wait until the group buy is over before you try to sell this.
I thought that GB is over already. Regardless, Spondoolies itself has multiple price points for one, three or 15. There is a $498 price for each if you buy three (better than GB per unit), so as I posted, my offer is a better deal if you want one SP20. |
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Well, you guys are tough. You can ask for less , but it is not rational to sell for less than ~$1.5K-at least I wouldn't.
This SP30 apparently hashes at 4.7 th, SP20 (without PSU) cost $498 if you buy three, hashes at 1.65 TH (at best).
4.7/1.65X498=$1418 plus add at least $100 for two PSU or one larger for SP20= at least $1500 fair price.
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The market cap of bitcoin is tiny in wall street scale. Their "not very much" is huge could move bitcoin markets. If there is money to make, they will be in.
They are clearly making a small bit of money on the short side right now, but I am talking about serious money with billions invested. |
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Has anyone in the US purchased SP31 or 35 miners? It says recommended 208v outlet. How are you converting your 120v outlets that are in most homes in the US? Did you call an electrician? Thanks.
People either run these in hosting centers OR use dryer or electrical stove outlets (if you can convince your better half...). Sp35 would not even work on 120V. Theoretically, IF you have two circuits nearby, you can connect each PSU (SP31 has two) to a different circuit, but 1. nothing else should be on these circuits 2. machine would be more loud and hash ~10% less. I systematically mapped my house circuits by switching off one at the time and checking with a small lamp. Nevertheless, i sent my SP3X for hosting, but looking forward to playing with them at home at some point when hosting prices > monthly revenue. |
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hashing myself now.
EDIT: apparently, nobody wants to buy a single new SP20 (was $555 this am).
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If there's a decent bit of money to be made and it's reasonably above board, Wall St would happily trade used tampons.
I don't see why a few of them won't have a dabble in BTC once there's regulation in place.
not talking about trading chick s... money (a few mils here and there). Seriously...100% of bitcoin market cap is a few tens % of some messaging app |
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