Just bought more at 216. I don't worry.  funny enough for some reason that was a buy in point i picked as well  still wouldn't mind further drops im sick of drops. im loaded up and ready to roll! The dips and bumps are nice because i use 2-3BTC for some fun day-trading (im up ~5% in the last two weeks), but I thought bitcoin would have achieved the $600/BTC plateau again by now. |
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Just to remind you and everyone else - deadline for the bounty is Sunday, Feb 1st 16:00 UTC (about 22 hours from the time of this post).
As of now:
klondike_bar +0.00%
change me to +1.55% |
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yes the above suffered two popped caps on eon each board. caps are smaller then the ones that popped on the asic miner prisma. so far this is the only case of popped caps .
but some ceramic tiles on your wood shelf would help heat shield the wooden shelfs.
We do not know if s-5's are going to be doing pop a cap. dont know how rare 1 in 1000 1 in 2000 or 1 in 50 .
Some s-3's did pop a cap very rare
Some s-1's did pop a cap very rare
Asic MIner Prisma not rare there was a recall refund rma setup by Asic MIner Fried cat
TBH wood requires a pretty large sum of energy to cause it to combust - if you sre using ense, quality wood it will not catch fire even if it heats to 100C and is in contact with a few sparks (if you continues to shower it in sparks or flame it may ignite - but as i mentioned choosing the right type of wood for the job will make it several times less likely to ignite than a cheaper plywood or particle board |
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..
2 14"X36" pine boards
2 26"x14" pine boards
2 1" diameter 28" wide dowels
...
Do not forget , S5 is fire hazard. S5 is fire hazard? Do you mean it is even worse then the average mining hardware? no. it can get hot, but nothing near starting a fire. (for reference the PCB is about 45-50C stock and runs fine at >65C if the cooling is sub-par --- the SP20 PCB gets to 65-80C in normal operation with the chips exceeding 100C) S5 is probably no more of a fire hazard than the SP20, and far safer than the prisma batch 1. (In fact, I dont think any S5 units have caught fire yet, but for sure a warehouse of SP-T gear burnt to the ground). a wooden shelf wont catch fire unless it reaches really high temperatures, so its pretty damn safe. a few easy ways to make it safer: use wood that is denser and treated. plywood is more flamable then cut boards, and metal cant burn at all. (in fact, wood wont conduct electricity or short exposed contacts so its a good choice) |
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haha that site is gold. BH Miner USB Bitcoin
No. of chips: Minion ASIC chips SHA26,
Hashrate: ~100GH/s out of the box, up to 120GH/s overclocked,
Power usage: ~0.75W per GH,
Dimentions: 28x60mm without usb plug,
Voltage: 5V
Power requirement: 2-2.5A
Supported software: cgminer (100gh)(0.75w/gh) = 75W (75W)/(5V) = 15A not sure how you pull 15A over a usb port, since that's 6X the advertised power usage. The 14 reviews of it being a good, fast-delivered product (and stating it does 100GH+) is the icing on the scam-cake heres a 1200MH scrypt miner that looks a lot like a fancy ATX pc http://aryadutaminer.com/buy-the-blessinghash-leopard-1200mhs-scrypt-miner-online.html |
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problem is that most of these are built with 16+ outlets on even a 250V/30A PDU, when in reality only 3-6 are required by larger power supplies some solutions exist, but I think a lot of larger setups simply use hard-wired systems or cheaper european 250V wiring sytems |
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How exactly is schedule supposed to work?
I set it to lower the voltage in 10 minutes for example and nothing happens when the time is up.
Current firmware version: 2.6.10
Been working fine for me, set the times you want the changes to occur, here I have cheap rate 00:00 to 07:00 so I set it accordingly  At the allotted time it changes as you can see from the speed graph over the last few days, fast during the night, slow during the day.  @zvisha: can the fan be adjusted at the same time? I want to run at 5-10% in the day but at night i don't care if it runs at 60% also @zvisha: is there a minimum speed for the fan? I run at 4-5% without an issue but am a bit worried that if i used 3% the fan might come to a stop when im not looking. alternatively, can the auto-fan go as low as 3% if chip temps are all 85/100C ? |
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You don't need water cooling to have quiet. You just need to stop designing for maximum density. Spread the chips out and use nice quiet slow big fans. That's really all water cooling is.
If the SP20 was twice as large (same number of chips, without putting 2 chips in line of the airflow) it would run much better and quieter with 2 fans.
^very true. unfortunately the shipping size/weight=cost would be about 50% more. In any case the SP20 is quite reasonable when its running at 1200GH or less. |
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Can I buy only 8 boards, 2 controllers and necessary 8+2 cables?
If yes, then I'm interested.
I am not sure,later I will tell you. That's ok,confirmed. for 8 boards, 2 controllers and necessary 8+2 cables + shipping ? +1 I have a ton of S1 frames id love to retrofit but bitmain still isnt selling any convenient kits. I like this unit though because it fits 4x S5 in about the size and weight (if you include the radiators) of 2.5x S5 |
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I'm saving my 'real' guess until closer to the deadline, but I will go with +0.00  feels like the price bounce and the flat difficulty have shaken most of the inefficient miners out, and without an increase in difficulty, anyone who is efficient won't leave, and many new machines will come on to replace whatever holdouts are being turned off. (I know at ~0.12/kwh USD this 6% drop made my S2 useful again) If price pushes past $300 again though, we could see a larger jump (maybe we should constrain people to using a single decimal point, so that people dont try "outbidding" by 0.01%'s. |
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The S5 won't get 1.3TH/s at 650W though, unless your unit is significantly better than mine are.
Hmm I get 650W (119V) on my KillAWatt running 1245GH on a 1000W LEPA Bronze supply with 375mhz. I did briefly run 390/400mhz with a Gold supply and thought I was averaging about 1.3T/650W but maybe I'll go back and double check... Thats what I don't get all the SP20 love here. It takes 960W @ the wall for 1.4/1.45TH on my SP20s. So I feel like 300W to gain 100/150GH is just a bad deal on the SP20. Heck thats nearly 50% more power required! I dunno I just haven't touched my S5s in two weeks, and they are solid. The amount of messing-around I have done on the SP20E and the number of firmware updates/fluctuating GHs numbers, etc -- well lets just say it reminds me of the early Jups and all the tweaking that was required to get those big chips all happy. Well I prefer to push my SP20 harder now and lower then later (diff jump). It always depends on so much factor ... for me electricity is cheap, so it's a no-brainer (~1100 watt for like 1560GH) The benefit of the SP20 is that at about the same speed as stock on the S5 it is equally efficient, and can operate at further efficiency (it gets close to 0.45) or ramp up its speed by 50% if theres a reason to want maximum hashrate even if its less efficient (such as for the paycoin spree, or if we saw a 50%+ price rally) The S5 needs to be priced cheaper than the SP20 i think. Both are excellent products but this antminer is disadvantaged in a few ways |
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Bitcoin price goes up from $200->230: S5 price goes from $310 to $341 (~1.2->1.48BTC)
Bitcoin price goes from $230->$280: S5 price goes from $341 to $370 (~1.22->1.32 BTC)
Bitcoin price drops from $280->245: S5 price stays at $370 (1.47 BTC)
seems they want to price in BTC but adjust the USD price manually. Not sure why they do that, as right now an SP20 is about the same 1.6BTC (shipped) which is pretty damn competitive for a cleanly-made, sealed unit with adjustable speed and fans
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Just wanted to say a big thank you to SP-T. Bitmain just shot themselves in the foot with their price increases. Keep being a responsible vendor, and I'll keep buying your products.
+1 I don't know what they are thinking coinbase exchange opened coins jump up for under 5 hours and they jumped prices from 340 to 370.+ shipping. Now that coins dropped to 270 I don't see them so fast to drop the price back down. They are too big to be so irresponsible with fast price changes like that. I understand both price jumps and drops but micro management of your pruducts price is bad form. Another reason i have 9 sp20's in house and only 1 s-5. +1. wasnt the S5 down at almost $314 in batch 3? Jacking it up alongside the bitcoin price is just silly, and IMO makes SP-T look way better by having a fixed price that is a round number and hasn't shifted much recently. |
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lets keep this one free of any 'serious'-ness....
my guess: -8%
looks like it will actually be a rounded -6%, which is still fantastic in my mind. Its likely we will continue to see adjustments around 0% until the price begins staying above $300. cant wait for my 3xSP20 to show up this week |
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^S1 is probably your best bet - go to the local craigslist/kijiji.
unfortuntaely, you need a minimum of 500W for most new miners
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Bootrack tech is so awesome!
3 PSU's, 6 SP20... How many watts are those PSU's or how far down have you underclocked and undervolted those miners? That's a shmick setup. lookjs like a trio of EVGA 1300G2 (so about 3.6kW of 12V available), and I beleive he runs the SP20 units around 600W/1.2TH, which fits perfectly |
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This is my first post, but I have been doing a ton of research. I work in IT so am pretty familiar with computer hardware and Linux. I live in an area of the country where the power is 2.7 cents per Kilowatt hour. There are lots of datacenters moving into our area for that reason. I'd like to start doing some home bitcoin mining. Mostly for fun, but given our low power rates maybe make a little money. I've narrowed it down to maybe the Antminer S5 or the Spondoolie SP20. On paper I'm comparing the stock power consumption and hashing rates. It does appear that the S5 is a little more efficient and cheaper to begin with. Is the SP20 better built? Better firmware? Basically looking for some input from people with more experience on which one to get. On paper:
Antminer s5 1155 Gh/s power consumption 590 watts cost $341 ( saw someone post $249 where is that from?)
Spondoolie SP20 1700Gh/s power consumption 1152 watts cost $475
If the SP20 is much better built or considered more reliable or more configurable I might consider it, but am leaning towards the S5.
Any help much appreciated....
Thanks.
SP20 is better built, and only $400 SHIPPED if you buy a 3-pack. The S5 price does not include shipping (another $60 for 1 unit, or ~$150/3) |
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Does everyone agree this is the S5?
no, probably the SP20 (though you need to buy 3 to get a good price). both units are pretty close, and operate around 0.5w/gh at the 1100-1200GH. The S5 can opten go up to 1300GH at the same 0.5w/gh though, whereas the SP20 increases to ~0.6w/GH at that speed The S5 can be undervolted with a 10V input to achieve approx. 900GH/380W. The SP20 can underclock to achieve similar specs at its lowest settings. SP20 is better design, smaller, sleeker, and power adjustments are easy through the WEB UI. imo, as long as the SP20 is not >10% more expensive than the S5, its the winner |
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I don't think he's trying to be thick, the S5 simply cant handle much more than 12V, unless you maybe had some serious cooling on it.
We'll have to agree to disagree on that. If you run the S5 in near-zero environment its possible to get 1.3-1.4TH from it at clockrates of 400MHz-425MHz and ~700W consumption
If you gave it 12.5V and sub-zero temperatures you might be able to get 1.4-1.55TH from clockrates of 400-437.5MHz and ~800W consumption but at that level the PCB and heatsinks might not keep up.
I am not sure what you mean by near-zero environment but I already can squeeze 1350 GH/s @ 412.5 by simply keeping it in my shed, with 1 S3 fan running at full pelt in a pull configuration.  tl'dr - dont go above 12V. its not really necessary as overclocking generally brings it to the thermal limit already, and increasing the voltage would radically increase w/gh
And here-in lies the real question. Would I be able to achieve a better hash-rate (and efficiency) if I over-volted and under-clocked? e.g 13.5v @ 375 there's no point in doing that. Your hashrate might stay about the same but your efficiency would go from 0.5w/gh to ~0.6w/gh, and likely exceed the current amount of cooling you provide. I personally was able to get a stock unit with 5C intake to max out around 412.5MHz (going to 425MHz resulted in hashrate loss). The best ive seen is guys in below-zero (celcius) garages/sheds getting to 425-437.5MHz (1.4TH) before anything higher is a hashrate dropoff. in both cases actual chip temperatures dont seem to be the limiting factor as long as its below 65C so if you can get 412.5MHz at the most right now, supplying 13V might let you run at the same frequency and push out ~5% more hashrate at the expense of ~10% more power draw, which seems like a lot of work to squeeze out 70w/50gh more by running it outside of specs, not to mention that power efficiency on a 13V PSU is typically lower than a 12V-gold psu. |
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^^^
If 12v is the safe over-volt voltage for an S5, then what is the standard voltage for an S5? I mean, how thick can you be dogie or are you just being a pest?
I don't think he's trying to be thick, the S5 simply cant handle much more than 12V, unless you maybe had some serious cooling on it. If you run the S5 in near-zero environment its possible to get 1.3-1.4TH from it at clockrates of 400MHz-425MHz and ~700W consumption If you gave it 12.5V and sub-zero temperatures you might be able to get 1.4-1.55TH from clockrates of 400-437.5MHz and ~800W consumption but at that level the PCB and heatsinks might not keep up. tl'dr - dont go above 12V. its not really necessary as overclocking generally brings it to the thermal limit already, and increasing the voltage would radically increase w/gh |
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