Bitmaintech.com

[AngusCanine]

Has anybody heard of or purchased from this website. They constantly have advertising banners here, just wanting to know if its safe to purchase from them?

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[dandirk]

Yes lots of good comments...  Though they do seem pretty busy, if anything goes wrong fixing could take some time.

https://bitcointalk.org/index.php?topic=417159.0

[dentldir]

I just received my order from them this week that shipped super fast.  I'll keep buying from them until someone else decides to actually compete.

[gmaxwell]

Bitmain is pretty great.  Their produces are delivered on time or faster (± normal noise that happens with international shipping), and their products are exactly as specified. Their products are industrial workhorses. They do not come in a sleek plastic case with useless decorative lights, instead— they actually work.

I don't get the impression that they have a bunch of fluent English speakers around, so communication is sometimes a bit spotty. Some people who've had packages get stuck in customs or received the odd defective part have reported it taking a while to get it resolved.

Like all current mining hardware companies their prices are so/so in that you're making a gamble on future difficulty, though they've been diligently lowering the prices as the expected future income goes away.  But the fact that they deliver on-time and to-spec— what really should be table stakes— makes them stand out in the business of Bitcoin mining.

Bitmain sent me a 90GH/s prototype unit before they started shipping, with the current firmware antiminers are awesome on P2Pool. Subsequently, I purchased a couple more on my own as a regular customer. 

I've recommended the antminer S1 to friends, and if you're thinking about getting into mining for fun and to support the network, I'd still recommend them. (Actually looking to turn a profit at it— well, thats a more complex question)

[AngusCanine]

So i 've  had fun with the u1's I bought from a us supplier how much more complex are the s1's.  If I order the miner does it need a seperate power source I think I read this somewhere, and does the power source have to be custom built? Thanks for the replies guys!

[gmaxwell]

So i 've  had fun with the u1's I bought from a us supplier how much more complex are the s1's.  If I order the miner does it need a seperate power source I think I read this somewhere, and does the power source have to be custom built? Thanks for the replies guys!

You can use an ordinary computer PSU, with some care in selection for one that provides enough power on the pcie power connectors. Beyond that, they're basically self contained— a little embedded mips computer running linux and an ethernet port.

[AngusCanine]

What about too much power?

[AngusCanine]

I've found a guide on coin miner.ch  gonna. DL this and read it

[dropt]

What about too much power?

That's subjective.  If you're concerned with efficiency just underclock them.

[_Miracle]

Ordered One 3/15 @night for 1.11BTC - Got a confirmation email this morning that it has shipped.
I'm pretty certain that you have to provide your own power supply (lots of support on this forum on which to buy and how to set up)

I'm happy so far...will be happy to update you.

[bitcoin_miner]

Bitmaintech.com great manufacturer
i ran S1 in my home

[BITMAIN]

Bitmaintech.com is the official site of the Bitmain Technologies Limited, which is the vendor producing the ANTMINER Bitcoin mining rig. Thanks for your interest.

[Skaterdiejosh]

I got 5 antminers from bitmaintech with delivery expected tomorrow from what tracking says. Vary good service answered my email questions within 24 hrs and the process from order to at my door in under 7 days !!! You also won't find a better price. I wouldn't be suprised if they sale out fast ...

[wpgdeez]

They are also good for giving out discount coupons to existing customers, I got 5 ants for 4.72 BTC today

[AngusCanine]

What about too much power?

That's subjective.  If you're concerned with efficiency just underclock them.

I mean the psu having too much power frying the circuits? Is it possible?

[AngusCanine]

3$ and some cents a gig hash that's on par with some preorder miners isn't it?

[wpgdeez]

3$ and some cents a gig hash that's on par with some preorder miners isn't it?

The new 28nm hardware with the A1 chip is running at half the power consumption of the ant. But you can get the ant now for less so personally I will run them for a bit until the A1 stuff comes down in price. Piece out the old farm and build the new.

[Syke]

I mean the psu having too much power frying the circuits? Is it possible?

No. Think of it the other way around. The devices pulls only as much power as it needs from the power supply. The power supply does not force power into the device.

[cloverme]

3$ and some cents a gig hash that's on par with some preorder miners isn't it?

The new 28nm hardware with the A1 chip is running at half the power consumption of the ant. But you can get the ant now for less so personally I will run them for a bit until the A1 stuff comes down in price. Piece out the old farm and build the new.

Agreed... why hope for tomorrow when you can mine today? 

[AngusCanine]

I mean the psu having too much power frying the circuits? Is it possible?

No. Think of it the other way around. The devices pulls only as much power as it needs from the power supply. The power supply does not force power into the device.

Ahhhh k  makes sense thanks