The Dell 750W breakout boards minersource sells are my Gekkoscience boards, so if they run out we've got more in stock. One benefit of a breakout board over soldered cables is, if the PSU does roast, the only thing you have to replace is the PSU. All the wiring stays put and it takes ten seconds to swap in a fresh supply. But those Dell PSUs are troopers. I've smoked exactly one in the last year or so, and that's after it ran 800W output for a week with basically no fan. Had one running outside that got rained on two or three times (while running) and it tripped out when very wet but always came back up with a power cycle. The fans on them are loud, but they'll push 450W with the fan on minimum speed (our boards allow fan speed adjustment) without trouble, at least in our testing.

With a bit more info, I can probably put together what you're looking for. I'm in the US though, so shipping cost will kinda suck.

How much less? Like 0.3BTC less?

And yes I know that sounds like I'm being a dick. Sorry.

I'd consider it if it had the LCD (all we have on the shelf is one without) but not for half a coin.

Because supporting the domestic economy is far less evil than promoting slavery?

Unless I'm thinking wrong, consumer-grade paperclips aren't usually rated for PSUs over about 500W. High-power units need a much stouter clip to really work well long-term. I couldn't find any for reasonable, is why I started using server PSUs that don't require paperclips - but these could be a game changer.

Where do you ship from? Does the free shipping include international orders?

We've got plenty of those DPS-2000 boards still in stock. We do also sell PSU for about $35 (looks like minersource has some they're selling for $30) but we don't have too many left on hand. We've also got the Dell 750W server PSU, which would run one S5 pretty well and a full kit's about $50.

GigaMPZ's DPS-1200 board should be able to run two S5, but it'd be about maxed out on power. Server-grade PSUs are built to sustain loads like that but as tolip_wen mentioned, around 50% load is typically the maximum efficiency point so running 100% will probably suffer 2-3% over peak efficiency.

If you actually pay attention to the context instead of isolating seemingly contradictory phrases, he's saying "Cointerra was no longer profitable [if they were paying their bills] ...they continued to profit [by paying themselves instead of covering owed debt]". Any business model with a revenue stream can be "profitable" if you don't pay the associated debts.

So, https://emic.com.pl/en/ isn't really a thing? Not defending anything except correctness.

We're looking at what it would take to expand our infrastructure - currently we have 50KW of hosting space but we're looking to double that. If we can fill up 100KW the fees will drop to a flat $75/KW-month. VPN remote access is free to all customers. Hopefully we can get the renovations done, and get the customers.

Yeah Raskul, them's pretty high prices. I thought you were estimating 70, not 100.

Klondike board? We actually just picked up a Klondike K16 last week. Nothing wrong with having two of some things, if that's what you're looking at.

And don't forget a typical charge efficiency for batteries is about 2/3 - so you have to pump 150Ah in to get 100Ah out. Also, where are you shopping to find a 1000W PSU costing $300? I could get you 4-5KW for that.

Solar power is, in general, a good idea. But unless your 12V batteries are exactly 12V (which seems unlikely) you don't want to run an S5 directly off the battery voltage. And solar becomes less and less of a good idea in North America this time of year, when the shortest day of the year was just a few weeks ago. You'd be seeing fractional exposure for a fraction of the day, meaning you'd be living off batteries for probably 18 of the day's 24 hours. So during the good-sunlight hours your panels will have to push 600W to the miner, and an additional 600W*3*1.5=2.7KW to the batteries to charge them up enough to run a 600W load for the rest of the day. Now you're looking at a pretty substantial investment in equipment. Or you could pick up a 1200W server PSU and wiring for $100 and run two S5 off of it.

So when you said "solar setup" and "solar grid" you were talking about some form of local electrical generation using sunlight but not photoelectrics? So what, solar heat into a thermocouple array? Or solar into a steam turbine? In any case, to run a 12V battery off any electrical source (solar or otherwise) will still require some regulation. And since most "12V battery" to be tied into a "solar grid" are probably lead-acid, the charge voltage is more like 13.8V which is a 15% overvolt for this miner. Since its ASIC power lines are unregulated, that means a direct 15% overvolt at the chips which could mean a 30% increase in power dissipation at the chips (assuming I proportional to V) and the whole thing catches on fire.

Raskul, what's your price for shipping the stack of blades to US 65401? Speed doesn't really matter.

Stan, yes trades are fine. We also have cables and other stuff, just gotta work out a price.

Since Prismas have independent power per board, you could run three across two DPS2K and run them both at about 3/4 power. I've also got a setup like that running without problems.

https://bitcointalk.org/index.php?topic=857967.0

I didn't use a pencil, but I have a good chart of resistor values, core voltages and clock frequencies to get them down around 0.8W/GH if you take the effort to tweak properly.

I've got pairs of Prismas running off single DPS-2000bb without any trouble.

No problem; my interest is fairly passive anyway.

I'm interested in the S2; I have a kit but not a stock machine.