When can we pre-order SP50 machines ?

I've got about 10-20kw available in a commercial space but noise would be an issue.  Which asics are quietest?  I know spoondollies is out.  Anyone have any suggestions would be much appreciated.

What do you mean unrealistic? It's the default projection which the tool provides based on recent history.
The difficulty should be around 41G in Sept, which is where it starts, and grows 20% from their each increment.
Is this not realistic?

would 'baby' purr better? (ie how cold is too cold or don't matter)

Yep, 34 (N/7000) is not really workable but 61 (N/7100) is fairly easy to condense and also a good working temp for chips; I would not be comfortable at 98 (N/7300) but 76 (N/7200) might be workable once the cooling is dialed in.

Higher boiling point also increases the usefulness of the hot water returned.

u27

Haven't heard anything from Bitfury.  Obviously they have money after feeding the beast that is ghash.io, so maybe they have some 20nm stuff they're keeping quiet about?

You mean block withholding.
Yes, it does.
It's actually worse there because nobody can stop it.

Then, why all this talk about hosting miners in WA. Any state, except NY and CA would do. It is either important or non-important, but it cannot be important enough for the hosting company (to be in WA) and non-important for customers. It does not make sense. Perhaps, I am pushing this point too much, but otherwise the whole thing does not work. Regarding the uptime: some people are running miners in their garages with almost the same success. All you need is a good proper ventilation with some air conditioning (as long as the temperatures stay below 82oF or so), disconnect detection (no connection) and periodic reboot (usually not the miners themselves, but the software)-and you are golden.

Noticed something odd with my 2 machines now I have access to them


Both are reporting around 1.2TH, but the gui and my pool are both reporting over 1.3TH, any ideas why the discrepancy ?

Roadstress, that's basically what we're doing. We're designing our system from the ground up with bitcoin mining (and mostly SP30s, since that's what Mike and I bought) in mind. No generator, no UPS, very low PUE, enough cooling for extremely high density (50+ kW/rack), and designed to be run near full capacity.

The PUDs around here all are pretty good in terms of power reliability. Chelan County PUD informally cited a figure of around 99.5% for power uptime, and I think that Grant and Douglas are similar. A diesel generator might get you 0.4% extra, and UPS another 0.09%. Diesel generators cost a lot more than 0.4% of the price of a bitcoin miner per kW, and battery backup is even worse.

bah gettin the same again;

Wow.  Not that hard to make a missile go 25 clicks.  How dumb are those guys in Gaza?  I think most 6th graders having a bit of advanced experience with Estes rockets are ready to move up to the next level and achieve 25km.  I sure hope spondoolies is taking appropriate cover. 

tks guy
so, I'm new, I don't know much
I can see your device is SP30-6Th/s, I also found Knc Neptune-3Th/s.
How much can I earn with each?

Zvi.. setting up my SP10s today and one is giving this error: Pool data successfully saved but failed to restart miner, please try again in 1 minute.

it won't start cgminer

help please?scrap that factory reset did it
 

your mean is this scam topic?

I've still never seen any math where a withholding attack doesn't cost you more than it provides.  If you have 10 PH/s, the network is 100 PH/s (including you), and you do a withholding attack on a pool with 20 PH/s.  Okay, so now you have effectively removed your 10 PH/s from the network, so the difficulty won't reflect your speed.  However, in the course of doing that (effectively reducing the next difficulty by 10%) you're taking a HUGE cut in your pay.  You'd be earning 33% less than expectation (you would be 1/3rd of that originally 20 PH/s pool, and by withholding that pool will under-perform by 33%).

I've played with the numbers endlessly, and the result is always the same.  You cannot perform a withholding attack where you end up earning more are higher than they would be if you were legitimately mining at 100% capacity.  It's the simple fact that you can not make the network difficulty be adjusted by more than the pay cut you're taking by performing the attack.

Now, this obviously only applies to non-PPS pools.  With PPS it's completely viable to do withholding attacks because your earnings hit is only the pool fee whether you are solving blocks or not.  Your only problem there is making sure you are able to continue pulling your balance out before the pool goes bankrupt.

The only impact that such an attack would have is to try to ruin the pool, or to earn BTC without impacting the difficulty.  (Which, granted, could be goals of an attacker.)  But the attacker could not *gain* anything by such an attack.  Their 10% would earn just as much BTC by solo mining as they get in the pool; and the other 10% would not earn any more or less.

I asked my current co-location place about S3's and they said bring 'em on! As many as you want. All they need of course are power supplies sent to them and they'll hook them up on large bread racks they have there. And if I have a lot, they'll make a good deal.

You say your house is full of Jupiters and Sp10's, how the heck do you live? One SP10 is loud enough and you said your house is filled with miners? How do you watch TV? With headphones? What do you do in the summer about cooling everything?

I've never been a risky person, so I hesitate, and sometimes I lose out. The best thing I ever did was buy a KNC Saturn and then bought 4 upgrade modules. That little guy is still chugging along. I think if my house had more electrical resources and didn't have to worry about cooling I'd have mining rigs all over the place. It is addicting.

Estimated Next Difficulty: 	17,609,327,556 (+4.70%)

Because some people find it doable.

OR you could pick up 7-TH worth of S3's for half the price....

I understand you bringing up the worse case scenario.
But most are not in it...