This was actually deleted - and I think it was a totally valid post that did not throw insults or break the self-moderated rules HF made Bad analogy. HashFast ASICs are not made out of sized Bitcoins. Bitcoins payed to HashFast were instantly changed into USD by BitPay.
I, and many other people, did not pay you via Bitpay. That's nice, but the principles are the same. Your coins were changed to fiat in order to build your machine, which was priced in USD. If Bitcoin went to $1.00 you would demand USD and scoff at BTC parity. If Bitcoin went to $1,000,000 it would be even more obvious you expect a pony named windfall to soothe your buyer's remorse. Please ask cedivad to stop reposting deleted messages. He's already made a hater thread (and site!) to preserve his precious hatings; no need to keep spamming them here. ^in which case you would return in BTC? You had a clear agreement (that was further backed by your own staff members' posts and email responses) that refunds would be done in the currency paid. In a normal situation, you would be right. it was priced in USD and thus a refund based in USD would be logical, using immediate BTC/USD rate. HOWEVER, hashfast and its staff repeatedly claimed that full refunds in BTC would be given. Evidence of this can be found on nearly every page of this thread. cevidad keeps posting because you delete his information - why do you think he is soo upset? Hashfast clearly scammed most of its 'customers' and now is failing to fulfill its original agreement/obligations (refunds in BTC or shipping the MPP since you were months late) [/quote] |
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Im a bit confused why you simly repeated what i posted as two seperate posts.
underclocking is simple, opposite of how you overclock - SSh into the unit, and change in the hex variable you want. If you go too low, harware errors may start to spit out all over. I think you could do 300MHz (~160GH @ 260W if i had to guess), not sure how much lower than that though
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This is something I have been wondering: Does a big pool have an advantage in luck over a smaller one. Reason being I switched about a terrahash from Eliguis to Eclipse and the luck on eclipse has been bad. Right now it's back to back 1 day periods since a block was found.
Does a large pool have a skewed chance of finding the next block over a little pool or an individual with a CPU due to having more local info about the last block generated (ie: they made it)?
If not I'll stick with a smaller pool because variance should even out. If so then I'm being a "chump".
its all about variance. If you took a 2-month sample all pools should be about equal payouts, but the big pools give small rewards very frequently. you make a good point though, and yes there would be a very slight headstart given to a pool that found a block. Its not much, but it may add 1% to the long-term payout |
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Would putting these on plus outing a fan on the chips vs on the mounts positively affect temps a preety good amount?
of course it would. the point is, what benefit will you gain by spending the money and the 25min its going to take to stick these on one at a time? (trust me, it will take some time to get each one on, I had to do similar with 112 bitfury chips and it was a pain, but at least allows much more overclocking with a bitfury) |
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wow sold out? I wish I had access to my cold storage earlier
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yeah mate, sry, but i really think this is how it will look.
obviously its a prototype, for a few reasons: 1) a paintjob would be cheap, protective, and look good (but KNC skipped this, so maybe not) 2) it has no connectors for a rack frame yet 3) there is a fan on top? If these are stacked in a rack, that fan would be absolutely useless unless the box also has a hole in the bottom for some crazy vertical airflow concept What about the 1000W with 1000W PSU. An option to ship without PSU?. The 1000W power number could come from anywhere. 1) 1000W at the wall means a draw of 880-920W 2) 1000W unit would need about 1100-1200W PSU for some overhead 3) 1000W PSU could run 900W of miners easily |
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Personally I think buying a mining equipment with your earned btc is a zero sum game.
In most cases ROI is achieved when btc goes up in value against the $.
So it's better for us to buy in $, if btc goes up to 40k like what
the winklevoss said, by the time you ROI your btc is 280,000$ instead of 3899$.
Argument can go both ways but if we truly believe in crypto it's always better to buy with $.
If you can't mine more BTC than you can buy $ for $, buy BTC. It doesn't matter what future exchange rates are or aren't. The only consideration is the opportunity cost of having to mine the BTC over time vs. having the BTC in hand to sell (if that's your thing). This. I dont mind buying gear with BTC because Ive already sunk what fiat i was willing to into BTC. If i think a miner can return 10-20% on its BTC cost then i will buy it as an investment. if BTC drops, i still have physical equipment, which at least counts for more then numbers on a harddrive Im currently a bit over-invested in BTC, and am considering selling 2-3BTC to give myself a few more dollars to spend in the 'real-world', particularly to offset fiat$ cost items like power use or electrical equipment |
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yeah mate, sry, but i really think this is how it will look.
obviously its a prototype, for a few reasons: 1) a paintjob would be cheap, protective, and look good (but KNC skipped this, so maybe not) 2) it has no connectors for a rack frame yet 3) there is a fan on top? If these are stacked in a rack, that fan would be absolutely useless unless the box also has a hole in the bottom for some crazy vertical airflow concept |
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I doubt you will get anywhere near 2Th from an overclock. I think a 10-20% increase may be possible with a second PSU, but any higher than that would require both modifications to the cooling as well as hardware modification to bring up the voltage a bit
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No pictures yet of the production unit... just broken img on the site.  The prototype bare metal box that bobsag3 posted on the other thread doesn't count... I doubt that represents how the S2 will look in the shipped production units. Then again... the S1 wasn't exactly a looker either... S2 pictures: https://bitcointalk.org/index.php?topic=515448.msg5694875#msg5694875lol |
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I have 3 high quality 1000 watt psu running 6 s-1's . my need for the psu is 0
So an good enermax cost 150 usd shipping is 20 usd.
Sell me a 1th unit without the psu.
reduce the price to 5.6btc maybe 5.5btc
Sorry, where can you buy a 1000W Gold Enermax for $150? you are correct i can't find one lower then 200. but with 3 of these what do I need it for. plain and simple dumb move to force that psu on us. we purchased lots of antminers from them and now they want to stick us with psu's many of us don't need. and I want the new gear but I feel that the psu is a problem for me. I have no qualms with a PSU being included so long as it does not mess with customs, and the price is still reasonable. If they are able to buy a few 100 PSUs for $100 each (compared to $200-270 in North America) and the savings of that outweigh the added weight, I say go for it. It will save me lurking around in all the local tech stores trying ot find deals that dont involve an MIR or $20 for online shipping |
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underclocking, you could probably get the S1 to be stable in the area of 150GH/250W. any lower and you need to undervolt it as well.
undervolting requires modification to the resisters associated with the TPS53355 chip(s). Increasing the resistance slightly (opposite of a pencil mod) would help drop the voltage from 1.1V to 0.9V which is where you would be closer to 150GH/200W
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I have 3 high quality 1000 watt psu running 6 s-1's . my need for the psu is 0
So an good enermax cost 150 usd shipping is 20 usd.
Sell me a 1th unit without the psu.
reduce the price to 5.6btc maybe 5.5btc
+1 ++1 I know i said 5BTC a few posts up, but 5.5BTC is actually reasonable as well IMO. However, >6BTC is a little bit of a stretch unless it comes with one hell of a coupon code. and Pieh0: shut up. 3BTC is insanely low and I would spend all my earnings at that price for the guaranteed profit |
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Hmm...
1) Big Box
2) 1000W PSU for a 1000W Draw... Explosion in 3,2,1...
3) Pricy... 4BTC would have been a way better price
4) Still 55 nm chips
A bit disappointed. I wish bitmain stayed online to answer a couple of questions, especially on the PSU front.
1) Im sure that the box is a prototype. the final design will probably be a bit smaller to fit a 4U standard, and anodized/painted to look a bit more professional. 2) Its very likely that the draw at the wall is 1000W, and/or low enough that the PSU has sufficient headroom. it seems unlikely they would miss an obvious technical limitation like that 3) I agree. Price should be roughly: 5x antminer (probably around 0.85BTC by april 1st) + $200 PSU + 15% premium for lower power usage = 5 BTC. 4) who cares, undervolting them clearly does wonders for the efficiency If these were priced at 5BTC, I would buy 1 or two. but at the current price, it makes more sense to go with the more modular antminer S1 |
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if OP doesn't have a window, AC is gonna pump hot air into the rest of the apartment; the heat has to go somewhere.
if OP has a window, open it.
Make a little shelf for your ants by the window and have cold air blow through* *(note: not for 1st floor apartments)
+1 & LOL at the amount of common sense. its only march right now, temperatures are going to get a lot warmer in the next 3 months so you need to keep that in mind and if you plan to keep mining - prepare a sufficent method of A/C or hot air exhaust to outside |
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I just received another S1 today and this one was used big time. Lots of Chinese dust all over the PCB boards and fan blades. Should I contact them and have them replace it?
Also might be a sign of things running out and new model coming out.
You are lucky that your S1 works. I received heavily used and semi-dead S1 from them. All covered in dust, heavy smell of burnt electronics, a lot of dead chips - one blade shows 8 ASICs instead of 32. It hashes only at around 120 GH/s and sometimes just stops hashing with beeping sound, needs power cycle to start again. I paid 130 euros customs tax for this unit, and it would cost around 200 euros to ship it back to Bitmain and then I have to pay another 130 euros to customs for the replacement unit. Just does not worth it. So Bitmain sold me a dead unit and now just stopped responding to my messages. you don't pay nothing to send it back, they will pay, and they will ship you a new one, if what you told is true, u make a photo and a screenshot. else i don't belive you at all. they have 10000 of customers, and no one point that(one blade shows 8 ASICs instead of 32), you are the first one. or, you didn't buy from https://www.bitmaintech.com , and you got scamed. My guess is that the power regulator (TPS53355) or its associated power components for the second 'segment' of the bad board died - this would result in no 1.1V signal to the chips or across the inductor, and would likely stop the communication chain to the 3rd/4th segments. I had that happy to the first segment on one of my boards, and no chips on the entire board hashed. Bitmain took a few days to decide on what to do, and then mailed me a replacement PCB alongside my order for another antminer. I swapped the boards (the thermal paste application needed some work at the time, but seems fixed now since antminers all come with it oozing out) and mailed back my bad PCB at thier expense. |
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Anyone has experience in how many you can run off one computer? Say I can find one or several USB-hubs , how many will run off one pc? I read they suggest 10-15 per 1 raspberry, but I have several mainboards/psus.
You guys think 100 per computer could be possible? 11 USB hubs with 10 ports and own powersupply should do the job. Thoughts?
Isnt there a 127 device limit on USB? Dont know if thats per controller or within the OS though. I've got 20 running on one PC right now and they are all working great. One things I've noticed for those of you running cgminer to control these things. My pool was reporting about 75% of what cgminer said my speed was. After switching back to cpuminer (one instance per miner) I'm seeing average speeds of 355khs on my pool now. I think its or the controller, but i imagine windows itself can only handle so many. keep in mind the bandwidth. 100 gridseeds sending a few kb back and forth would overwhelm the capacity of USB2 controller and likely cause some bad latency issues |
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If thats the PSU your using... wow
+1. good PSU type, but what is up with that plastic shrouding? it looks terrible and IMO serves no purpose Have you ever accidentally caught your finger on a 6000RPM fan? not yet  I try to keep clear once its plugged in |
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Comparing the gains from U1 to U2 should be reasonable. Considering that according to there website, the only difference is a extra 400 mh/s from U1 to U2 (or 20% increase) with no change to power consumption, and slightly bigger footprint, proabbly to accommodate the different heatsink, I think a reasonable speculation/assumption would be the S2 having the same power consumption (360w Im hearing from forums) and having 20% increase in hash ( or 216 gh/s) with out OC. This may be flawed, but Bitmain is selling the U1 for 18 BTC while u2 is 13.9 BTC per 500 units. This may be the preorder, but if that scales as well, we could expect a 33% discount in price or .77BTC. Just my thoughts.
the u2 is the same design as U1 i think, except that its now hard-coded to run at 2.0GH rather then needing the bmsc-options variable in cgminer |
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$70 for a $12 PSU? meh.. for $348/hr, I'll spend 10 min soldering to get the same result.  If thats the PSU your using... wow +1. good PSU type, but what is up with that plastic shrouding? it looks terrible and IMO serves no purpose |
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