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mikerbiker6
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March 11, 2014, 06:24:27 PM |
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I think buying any StickMiner thinking you'd make a monetary positive ROI would be silly at best.. unless you can get them for very cheap and don't have to pay for electricity and don't mind running them for a very, very long time, that is  I guess if you buy from bitmain directly, its not too bad, $17 a piece. One can probably sell 480 of them on Ebay for 40 a piece too :p and play with the rest Sell them for 40, no way. You will be stuck with some 400 miners. Be my guest to try it out. |
Participate and Earn on the Letstalkbitcoin forum letstalkbitcoin.com
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Every time a block is mined, a certain amount of BTC (called the
subsidy) is created out of thin air and given to the miner. The
subsidy halves every four years and will reach 0 in about 130 years.
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Bombadil
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March 11, 2014, 08:46:59 PM |
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Most local sellers here sell them off with extras like USB hubs at a certain amount and help with the setup, mostly trough remote desktop. And they seem to be very profitable that way.
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flounderella
Sr. Member
 Offline
Activity: 350
Merit: 250
Bitcoin Evengelist
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March 11, 2014, 10:18:22 PM |
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I think buying any StickMiner thinking you'd make a monetary positive ROI would be silly at best.. unless you can get them for very cheap and don't have to pay for electricity and don't mind running them for a very, very long time, that is I guess if you buy from bitmain directly, its not too bad, $17 a piece. One can probably sell 480 of them on Ebay for 40 a piece too :p and play with the rest Sell them for 40, no way. You will be stuck with some 400 miners. Be my guest to try it out. Like this guy: http://www.ebay.com/itm/BITMAIN-ANTMINER-U2-2Gh-s-ASIC-Bitcoin-Miner-BTC-USB-Stick-USA-/291098149399But I get your point. He's probably not making any actual sales at that price. |
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TheRealSteve
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March 11, 2014, 10:40:16 PM |
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Well, you can check sales history - seems plenty sold at that price point. Of course it could all be sockpuppet account purchases, but it doesn't really have to be. While it's cheaper to get them out of the far east, you have to navigate the scammer waters, wait for shipping to commence, then wait for it to actually get there, then if there's any issues have to take it back to them, etc. To some people, having a 'local' seller with product in hand is worth the extra $. That, and there's plenty of naive people who simply don't know any better, just heart about Bitcoin and mining on the news and decided to hit up ebay/amazon for 'one of them miner things'. |
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xspeed9190
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March 12, 2014, 06:08:35 AM |
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I was looking at these but honestly what is the point if it will never reach ROI? Why buy it? Even OC to 2.4Gh/s still is like 200+ days at current diff to barely pay for itself. Please if I am missing something enlighten me.
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BTC:19vSvHFzpFegJJsqCnkXTSPQF4UE3Vsm6i |
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xingqiaoyin
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March 12, 2014, 06:13:49 AM |
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Random thoughts
Birthday gift
Btc introduction gift
Souvenir
At workplace or cafe who let you use outlet you could basically use your laptop to mine and not paying for electricity.
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TheRealSteve
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March 12, 2014, 06:32:48 AM |
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1. Birthday gift
2a. Btc introduction gift
2b. Souvenir
3. At workplace or cafe who let you use outlet you could basically use your laptop to mine and not paying for electricity.
1. Why not 2. I'd look into the iMiner instead. It's cheaper and a more gift-friendly package (same package as a regular USB stick, so you can still plug in a mouse next to it). I did a teardown of one a while back. Of course the downside is that they're pretty slow - but since neither would make the user rich.. 3. If you're taking advantage of electricity offered to you, there's more powerful miners one could carry around and use. I guess the main issue in the case of a cafe would be noise generated, so it would still have to be a passively cooled miner, like a twinfury/bi•fury or an underclocked mini miner. |
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Bombadil
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March 12, 2014, 09:22:02 PM
Last edit: March 12, 2014, 09:32:13 PM by Bombadil |
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a) It's for fun, use the right SHA256 altcoin at the right moment, and you might just shorten that ROI a lot while having good ol' fun. b) OC'ing them can be fun too. c) You will get some BTC out of them, and if the BTC course does another big high, well.. Then you're one of the lucky ones with a BTC in its wallet when its 2000$ each  Mining is speculating too, remember that  |
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SinCity68
Newbie
Offline
Activity: 1
Merit: 0
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March 13, 2014, 02:43:24 AM |
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Is there a new driver for the U2?
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hardhouseinc
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March 18, 2014, 06:24:16 AM |
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I used the standard CP210x_VCP_Windows driver.
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techman05
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March 20, 2014, 02:14:24 AM |
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Other than the spacing issue I'm having with u2...If I find mine doing wierd things. Do I just return to the place of sale or is there a better option[for r/d of the developer]?
I have a u2 that doesn't like the hub I had an old eroupter on(USB3 aitech) and won't work (red light with no green light), but if I plug it into a different hub which happens to be a rosewill 4amp 10 port hub usb2.0 with about the same connections it goes upon its happy way till I catch cgminer deactivating it and then I use the unplug setting and off it goes again. I gave it a wide berth on both though atleast the aitech has enough space between if I get the opportunity to buy more or iqnore higher hashing devices available.
Also notes for u3 ... Make a red blink on problems or have some sort of cgminer feature to blink a device so its easier to trace down whats not playing nice. At least my readynas device has this feature if I ever have that many nas's I can't count. The red light does nothing for me on the u1 (solid red) and at least the u2 does like the block eroupters and does a [blink blink blink solid] on the top green light when you first power it up.
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oskuro
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March 25, 2014, 11:21:25 PM |
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Hi. Is there a tutorial of how to overclock this antminer U2??
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Proteu5
Newbie
Offline
Activity: 52
Merit: 0
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March 25, 2014, 11:32:00 PM |
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I love the U2, I just use the bfgminer command –set-device antminer:clock=x0981 in a .Bat or .Sh file. Hex=Gh/s --------- 0581 =1.2 0681 =1.4 0781 =1.6 0881 =1.8 0981 =2.0 0A81 =2.2 It goes higher but i start getting high HW after 2.2. Other than that, I would love to know of a Hardware part swap-out guide to get closer to 3.0 |
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oskuro
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March 25, 2014, 11:33:56 PM |
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I love the U2, I just use the bfgminer command –set-device antminer:clock=x0981 in a .Bat or .Sh file. Hex=Gh/s --------- 0581 =1.2 0681 =1.4 0781 =1.6 0881 =1.8 0981 =2.0 0A81 =2.2 It goes higher but i start getting high HW after 2.2. Ok thanks so 2.2 max recommended? |
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Proteu5
Newbie
Offline
Activity: 52
Merit: 0
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March 25, 2014, 11:41:09 PM |
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I love the U2, I just use the bfgminer command –set-device antminer:clock=x0981 in a .Bat or .Sh file. Hex=Gh/s --------- 0581 =1.2 0681 =1.4 0781 =1.6 0881 =1.8 0981 =2.0 0A81 =2.2 It goes higher but i start getting high HW after 2.2. Ok thanks so 2.2 max recommended? Yes, I run a series of them inside of a 12V AC adaptor with a nice Corsair CPU fan cooling box. The U1's run max at 101C, but the U2's on my set-up so far run around 94C. As soon as I find a way to push above 2.2 with cooling and command line I'll post it. |
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FlensGold
Legendary
Offline
Activity: 1405
Merit: 1001
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March 27, 2014, 08:57:48 PM |
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Did anyone else receive units from batch 0331 (U2+, 2.0GH/s default hash rate) yet?
I am wondering that mine are also V1.2 and only work with 1.6GH/s with default cgminer settings (just like the previous U2 batch).
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FlensGold
Legendary
Offline
Activity: 1405
Merit: 1001
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March 29, 2014, 01:19:06 PM |
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Did anyone else receive units from batch 0331 (U2+, 2.0GH/s default hash rate) yet?
I am wondering that mine are also V1.2 and only work with 1.6GH/s with default cgminer settings (just like the previous U2 batch).
Since no one did reply I sent an email to bitmain asking about my current order. Obviously additional parameters (--freq 0781: 1.6Gh/s / --freq 0981: 2.0Gh/s) need to be set to run it @2GH/s. I am just wondering where the difference is to the previous U2 batch. Does anyone have an idea? |
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oskuro
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March 29, 2014, 01:41:20 PM |
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Did anyone else receive units from batch 0331 (U2+, 2.0GH/s default hash rate) yet?
I am wondering that mine are also V1.2 and only work with 1.6GH/s with default cgminer settings (just like the previous U2 batch).
Since no one did reply I sent an email to bitmain asking about my current order. Obviously additional parameters (--freq 0781: 1.6Gh/s / --freq 0981: 2.0Gh/s) need to be set to run it @2GH/s. I am just wondering where the difference is to the previous U2 batch. Does anyone have an idea? I dont understand something. I bought 2 antminers also in cryptoware, and u2 are supposed to be 2GH/s base(1.6 its u1), so how can yours be 1.6? if its U2 version cant be less than 2GH/s  |
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FlensGold
Legendary
Offline
Activity: 1405
Merit: 1001
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March 29, 2014, 01:50:11 PM |
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Maybe I am mixing something up, so I hope you can clarify this:
When starting bfgminer/cgminer without additional parameters to set the hashrate (like "clock=XXX" or "--freq") Antminer U1 and the first version of the Antminer U2 (with the new heatsink) started to mine with 1.6GH/s per default.
Since the new Antminer U2+ is advertised with 2.0GH/s per default I expected they would start hashing with 2.0GH/s without adding parameters.
I know that I could add parameters to change the hashrate, but this was also possible with the U1/U2. So I am wondering where the difference is between the U2 and the new U2+
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Proteu5
Newbie
Offline
Activity: 52
Merit: 0
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March 29, 2014, 03:55:34 PM |
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Maybe I am mixing something up, so I hope you can clarify this:
When starting bfgminer/cgminer without additional parameters to set the hashrate (like "clock=XXX" or "--freq") Antminer U1 and the first version of the Antminer U2 (with the new heatsink) started to mine with 1.6GH/s per default.
Since the new Antminer U2+ is advertised with 2.0GH/s per default I expected they would start hashing with 2.0GH/s without adding parameters.
I know that I could add parameters to change the hashrate, but this was also possible with the U1/U2. So I am wondering where the difference is between the U2 and the new U2+
Edit: U2= 1.6ghs stock U2+= 2.0ghs stock (it appears!) I have a U2+ on pre-order, it looks like the U2 efficiency (ghs/watt) was improved. They kept the same 2w consumption but increased the speed. My guess is that their upgraded the quality of, or added a different or additional part to the board (ie: oscillator, reststor, etc). There are several clear differences between the U1 and the U2 board, but I'm expecting a minute difference between the U2 and U2+; however, this could make a world of a difference in Overclocking If anyone could get their hands on a Data Sheet for the U2+ that would be amazing. I have to say the U2 really makes a difference in HW's; I fine tuned mine last nite and I'm at a stable 2.16 with zero HW (x0891), and that's local; my global rate is 2.60 |
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