As Rammus would say: Ok.

That's not really how they roll. They likely manage a few farms for private clients (because why not, its cheaper) but they're reasonably transparent about their hashpower. They're also not interested in bullying the network, if the overwhelming majority [of the other power] is voting one way, they'll follow unless its suicide.

I didn't have any problems trying it, although its simpler to simply disable all the loops on the bad board unless its terribly damaged, and then you could try removing the PSU - hashboard electrical connection plate thing to depower the board.

tldr they signed a letter of intent to merge [buy and integrate] Spondoolies with various terms, such as a 3 year exclusivity agreement on Spondoolies products, the transfer of staff (Guy, the CFO etc). BTCS made a small % purchase of Spondoolies stock in order to give them enough cash to tide them over while the formalities get done. Either party could theoretically cancel the transaction although there are some pretty harsh cancellation terms. For example, if Spondoolies wanted to "be bought out" by someone else, BTCS would be due $1M IIRC.

The thing is, BCTS don't appear to have enough cash to make this deal work at the crazy valuation they previously put on Spondoolies even if it was a falsely high one. It appears that they were hoping to raise even more money (on top of the $15M they've burnt through), or issue a tonne of shares. Either way, Spondoolies owes me money and isn't paying.

Relevant

If you have to ask, the answer is probably yes, same with most ethical debates.

If you just want the raw financials they're here, p&l, balance sheet and cash flow: http://finance.yahoo.com/q/is?s=btcs. In the 3 months to March 2015 they had $38,000 revenue while their costs were $3,380,000.

To 140k revenue in 3 months, while also losing 1.3 million in 3 months. They've lost 14 million since starting, never ever made a profit.

Or their negative 1.5M balance sheet. Time to call the lawyers.

~115KW for 22 SP35s, so need either a good dump to ambient or decent evaporative. Racks / tables don't matter, get whatever is cheap but isn't going to fall apart. I'm sure you could find some good Steel and MDF racks for like $50 and spray treat the wood.

Internet requirements for mining are minimal, both bandwidth and speed requirements.

I don't know about that, my HD7990s had 3x8-pins = 525W and they were official enough.

S4+ was what would have fit into the S6 nomenclature but it was only a small performance increase, so they put a + on the end instead.

Only a few so far are under the required level, but I'll be reasonable and if they've levelled up by the time this closes then I'll accept it.


Is that 1.7854 or 17854?

It was quite a while ago when I said that and things do change. That being said, still looks like S7 next.

The S4+ runs pretty close to its readline at 35-40C so you'll get better data whacking its frequency down first.

Its easiest to show you. If you've got an S4 or S4+ around, remove one of the pair of fans and see, remove the other and see. The one with rear fans will do just about fine, the one with front fans will overheat. If you're really determined, you could try reversing the direction of an SP3X's fans and watch it overheat.

Edited posts are shown as edited. If there is a 3 week old post with a fresh edit then its pretty obvious it was changed maliciously.

Think of the SPXX (all of them ), they used the absolute perfect cooling layouts. You don't need to ram air in because it really doesn't do anything, as evidenced by swapping out SP120s on an S4's front fans not changing the temperatures pretty much at all. You then suck all the air out, in a long, smooth and continuous column. This column can be wedge shaped if your intake is larger than your exhaust and it works fine - air is a wonderful fluid.

Its all about them rear fans, and you certainly don't want grills on your exhaust (see above).


I think you're going to be super close (see above again) and it might fit on CAD but will probably be prohibitively tight to use IRL.


The fan is far, far far louder than the SP35 which can run 40% fans and its the thing you can hear through walls, floors and really gets to you. It was similar on the SP10 although that PSU was overloaded and the main fans were only 50mm. It was such a shame on the SP35 as the entire unit was quieter than an S5 if you underlocked it enough so that the PSU fans wouldn't spool up to max.


a) Put it on a test board in a test case, measure it, see what the rough delta is tracking. Use that in software. It might vary between chip type but you'll still be able to get the delta from your test boards.
b) Ignore ambient and just fan control off chip temp, which is really all you care about. Again as I said above you don't care if its a 60C ambient as long as the chips are happy.


Thermal expansion is a consideration and not an issue. Its countered by using clearance holes to mount the heatsink to the PCBs, so its sliding on the bolthead rather than loading your PCB.


In your current layout I don't think things will fit nicely (discussed under 2)), but I was actually referring to external being too large. U racks are explicit in that 4U = 4U, 1mm over and you're impinging on the next 4U of space and pretty soon screw holes don't line up. Which is why I suggested designing for external of <7" rather than =7".


Yeah, dimensions are in each individual guide. The majority are thinner than 19".

1) is worse than closed, as seen on the S4 testing. The initial cases had an open mesh next to the fans but it does performance because of this... *searches for picture*. You could actually feel this behavior with your hand and reduced the effectiveness of the rear fans significantly. Later models were



2) That's going to be a tight, tight squeeze along that side. Just drop a fan and mount the PSUs peacefully.
170-175mm external
= 166-171mm internal
Fan = 120mm
5-10mm spacing
= 36-41mm for an unmounted 44mm PSU. Putting the PSU above a huge fan like this is also a nono as it suffocates the PSU's fan which generates significantly lower static pressure. So you end up with barely any air movement there or sometimes backwards airflow. Its more of a problem when you use negative pressure flow but its still a design concern with positive pressure. Its the reason you see PSU "compartments" sectioning off the airflow - like in the S4, S4+ and SP3X.


4) What I was really trying to say is that the only temperatures you care about are your chip temps. If its 60C ambient and your chips are still fine there's no reason to stop mining.


1) Its not 15mm between fans, its 15mm total between case fan fan fan PSU PSU case. Yes fans are measured / rated across their linear dimension. 120mm fans are usually + / - 0.3mm, you do need a gap between all those components and all mounting holes will have a tolerance. You're not going to be comfortable with less than 12-15mm across all those things.


It was in reply to 2112 who was talking about thermal stress.

I've striken through that instruction, was going to use a bot to pick out the answers but it seems to be working fine with comments in the same posts. You can delete one of your posts.