Wow how this forum is an unbelievable echo-chamber fueling one big ponzi scheme. Bitcoin as a currency, give me a break. A currency where it takes days to clear payments unless you pay massive fees - fees that are hostage to whatever vagaries the miners have? And if you don't, you are left in limbo where you have no idea whether it takes minutes, hours or days to move your money? A currency which is heavily impacted by "civil wars" with rival crypto currencies? A "currency" even less stable than the former Zimbabwean dollar. Don't get me wrong - the other crypto "currencies" equally well fit the ponzi scheme.

It is abundantly clear from reading in here for quite a while that the vast majority of people speculating in here are simply pinning all their hopes and dreams on the notion that these tulip bulbs - sorry tokens - can only rise in value. Sorry to say, but some people are going to get hurt badly eventually....

No problem! And sorry, I don't know as mine runs in a basement, but colder is always going to be better for machine performance and longevity, so if you're dropping that much on gear, I'd say spend the hundred or so on some extra insulation or ventilation as needed. Good luck!

It's not very hard, especially if you stick to either Windows (not recommended) or use a pre-built OS like ETHOS, which is $39 per rig, which is totally worth it IMO; it IS just a minimal build of Ubuntu geared towards mining, but the $39 is worth not having to build the distro yourself for me. It'd be cheaper to buy the hardware and assemble the rig yourself (by at least $1k most of the time), and you can customize it, so you could start with what you can or are willing to spend now and add onto it later (just as long as you buy a motherboard with enough pcie slots, I recommend at least 6 unless you just want something small). The other nice thing is that as new tech comes out you can upgrade in stages with what you can afford instead of having one huge price tag all at once, but honestly it's really not that much of a difference in price for hardware vs income if you're smart about what you buy...

But if you don't want to/don't have time do that, and are solely focused on ROI and profit, then I suggest the L3+, or the S9 if you're good at wiring, for the garage, or the R4 for inside.

Basically ASICS are the better short term investment, GPU rigs are better long term (and more modifiable obviously). I'm primarily a Mac guy with a little bit of Linux knowledge and it took about a day for me to figure out ETHOS. I currently have two ETHOS rigs (one with 3 Nvidia 1060s/3 1070s, and one with 4 1060s), an S3, and an L3+, and I have some broken S5s I picked up that I've been playing with for fun. I don't prefer ASICS over GPUs or vice versa, though the ASICS are definitely more of a "set it and go" which is great, but less fun to mess with (and far more limited on what you can mine with).

Oh, and I second the "run a line out" if you're planning on putting it in the garage; it won't be a HUGE loss, but you want as strong and direct a signal as possible, as though miners use next to no bandwith, they are constantly sending and receiving data, so any moment of signal loss will cause delays or rejections. Again, overall not much, but if you can run an ethernet line, I would.

The S3 isn't profitable. It's cheaper than running a space heater is all (and keep in mind that numbers are based on current values and difficulties, which vary; I have an S3 I have overclocked and used as a spaceheater, and it is profitable, just not very). The S5 is profitable but needs modding. You can also mod it with third party hashboards and make it more powerful, but that's not cheap either.

The R4 is your best bet, but since they're not made anymore they're a bit pricey. Or just build a gpu miner in a milk crate that you can control the mining and heat generation of, it'll cost about the same and be far more versatile.

Don't pay $2200.  You can pick them up sub $1600 on bitmain right now.  Buying from the source is always better too.

That's your right and we completely understand. We hope that a Dutch resident from Bitcointalk will come visit our office soon to verify our legitimacy.

are you looking for brand new or used miners?

ASICS machines (and pretty much all computer components) generate heat at basically the same rate as a similar wattage space heater. So the L3+ (assuming you mean the current line) will put out around 800W of heat at stock settings. You can under or overclock it for more or less. Keep in mind it is continuous though, so if you have a small office it'll get stuffy pretty quick.

The bigger concern with the L3+ is sound. The cooling blades are set up in a way that the fans, while a bit loud in and of themselves, sound like a vacuum cleaner or jet engine when running at full blast. I built a sound dampening box for mine and ducted the exhaust up from my basement to provide heat. I can still hear it faintly through the box and my floor. I highly suggest checking one out or looking at online videos to get an idea.

If you want a space heater that generates a little money, the S3 is a better choice; it is MUCH quieter and overclocked generates between 400-500W relatively stably. You won't turn much of a profit, but it'll likely cover the increase in electric cost. Or you can pick up and mod an S5 with quieter fans, that'll earn you a bit. But honestly, if you want to spend on a space heater that will still make you money, the R4 is the best choice, you can still find them used for around $3k...

Cool deal, good luck man. They put out 250 cfm each, but a 6" HVAC tube similar to your dryer hose will work to route it where you want it to go. Free heating during winter though.
If it bothers you, box fan in the window pulling air or inline fan for pushing it out.

Good luck!

You must be mistaken, the price is not cheaper than the manufacturer.

Have you forgotten the price of Bitmain is in USD?

We won't accept a normal member to be a middleman. The only option to verify our legitimacy is for a Dutch resident to visit our office.