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Cryptocoin Mining?

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Asicminer USB sticks are down to 0.45 bitcoins in at least one groupbuy. With the new entry of avalon in the usb miner sticks, maybe they will get down to a reasonable cost.

I'm really, really glad I sold most of mine right before the big price drop (for $150!).
 
Binky said:
Asicminer USB sticks are down to 0.45 bitcoins in at least one groupbuy. With the new entry of avalon in the usb miner sticks, maybe they will get down to a reasonable cost.

I'm really, really glad I sold most of mine right before the big price drop (for $150!).
Click to expand...

yeah at .45btc a stick they start to look pretty good.


.3 works well 30 sticks = 9 coins.

they will hash at 10gh. burn about 120-150 watts counting the pc + fans + a monitor.

at .3btc.

they would make roi in under 90 days.


at .45btc 30 are 13.5btc roi is more like 180 days.

I am using 100 usd 31 mill diff as a start with a 60% a month growth rate and 18 cents a k-watt. those are very conservative numbers.

I am not sure the network would grow from 31 mill diff to 345 mill diff in 6 months.


that would be from 325th to 4000th that is a lot of money's worth of gear.
 
Sazuzaki said:
I've seen a lot of used 7970's saying its used for bitcoin mining, does bitcoin mining put that much stress on these GPU's that it shortens their life significantly?
Click to expand...

I've been mining on a 7970 and two 5870's for 6 months with no issues. I had a bit of stability problems but I just added a couple more case fans and I've had 100% hardware uptime. Had some network issues but that was just on the mining pool end of things.
 
While I have had very few bitcoin related GPU failures, I've lost two USB hub power supplies already from running multiple USB ASIC on them. Going to cut down to 8 per hub instead of 9, see if that helps.
 
Chiropteran said:
While I have had very few bitcoin related GPU failures, I've lost two USB hub power supplies already from running multiple USB ASIC on them. Going to cut down to 8 per hub instead of 9, see if that helps.
Click to expand...

look at the current requirements on each USB miner. multiply that by the number per hub, then take a look at the DC out amperage available on your transformer. Odds are you're way overloading power brick.
 
jaedaliu said:
look at the current requirements on each USB miner. multiply that by the number per hub, then take a look at the DC out amperage available on your transformer. Odds are you're way overloading power brick.
Click to expand...

most 10 port usb3 hubs like anker oritech and aitech have a 12 volt 4 amp brick this is 48 watts if it is 100 percent when it coverts to 5v at best you get 80 percent or 38 watts. 10 sticks pull 25-30 watts so if the brick is really a 4 amp 12 volt brick you should be okay. my 3 hubs are going strong so far. but I do 9 sticks a hub.

My goal is about 45-60 sticks. I have 13 due on thur so I will go to 40. I may order 15 more which gets me to 55 sticks. I am not going to run more then 60 sticks. I have 2 pcs setup for this 24/7/365. I will attempt to run litecoin and btc. the pc's will have 2 7970's each for lite coin
 
I love how entire countries like Thailand are outlawing the use of Bitcoin, yet the currency is rallying 🙂

The reality distortion field sure is strong with this one...
 
notty22 said:
Learn how to follow and read a thread.
The OP specifically asked twice if there was other situations where one hardware vendors cards showed superiority like AMD's apparently do in this.

MY ANSWER
Originally Posted by notty22
Folding@home favors Nvidia cards.
http://www.bit-tech.net/hardware/gra...-for-folding/3
Click to expand...

i am mining there with my Nvidia GPU, but seems like AMD is superior and ruling in this mining field of processing. great speed
 
ultimatebob said:
I love how entire countries like Thailand are outlawing the use of Bitcoin, yet the currency is rallying 🙂
Click to expand...

There are entire countries that have outlawed marijuana, yet it seems to be holding it's value. Funny how things work =)

It's really not a big deal. In fact, I think it's having a net positive, since it's giving bitcoin a lot of free publicity.

In other news, I'm starting to hate Verzion. My FIOS internet went out at the beginning of the month, took 3 days for the tech to get over and fix it, apparently the cable in the phone closet at my condo was partially ripped out of it's socket. Yesterday had the exact same symptoms again, FIOS internet and land-line phone service out, so tech is coming down again. I bet almost anything it's the exact same problem. Assuming service is restored Friday, I will have lost 2 bitcoin in total from lack of mining for 6 days. I wish I could sue them.


philipma1957 said:
what hubs?
Click to expand...

anker 10 port hubs, which interestingly are no longer sold. Now they sell 9 port +1 charging port hubs.

jaedaliu said:
look at the current requirements on each USB miner. multiply that by the number per hub, then take a look at the DC out amperage available on your transformer. Odds are you're way overloading power brick.
Click to expand...

Not at all. I did a lot of research, there are dozens of cheap hubs where this is a big issue, but the anker branded hubs are supposed to be fine.

The power supply is rated for 12v 4amp, or 48 watts. USB power is at 5v, and each USB ASIC Miner device uses .5 amps, or 2.5 watts when multiplied by the 5 volts. Even with a full 10 devices on a hub it should only be drawing 25 watts, compared to the 48w maximum.

Interestingly enough, the new hubs have 12v 5amp power supplies, so a little extra breathing room. But based on my calculations even the 12v 4a supply isn't being overloaded. If I can find my kill a watt device I'll confirm power usage.
 
Last edited:
Chiropteran said:
Not at all. I did a lot of research, there are dozens of cheap hubs where this is a big issue, but the anker branded hubs are supposed to be fine.

The power supply is rated for 12v 4amp, or 48 watts. USB power is at 5v, and each USB ASIC Miner device uses .5 amps, or 2.5 watts when multiplied by the 5 volts. Even with a full 10 devices on a hub it should only be drawing 25 watts, compared to the 48w maximum.

Interestingly enough, the new hubs have 12v 5amp power supplies, so a little extra breathing room. But based on my calculations even the 12v 4a supply isn't being overloaded. If I can find my kill a watt device I'll confirm power usage.
Click to expand...

12V for a USB hub is a very strange number. USB runs on 5V.

I took a look at the manual for the 12V-5A version. they recommend no more than 8 Amp total draw on the USB hub. (8*5 = 40 watts) This is a fairly conservative efficiency estimate of 66% on a 60 amp power supply (12v -> 5v)

Your 25 watt draw is plenty low compared to the equivalent 12V4A version (probably recommend no more than 32 watts pulled)
 
jaedaliu said:
12V for a USB hub is a very strange number. USB runs on 5V.

I took a look at the manual for the 12V-5A version. they recommend no more than 8 Amp total draw on the USB hub. (8*5 = 40 watts) This is a fairly conservative efficiency estimate of 66% on a 60 amp power supply (12v -> 5v)

Your 25 watt draw is plenty low compared to the equivalent 12V4A version (probably recommend no more than 32 watts pulled)
Click to expand...

yeah but I think the psu's are not that good not 12v x 4 as rated but less.

Also I think he has older sticks pre july 8th pull .55 not .5 amps.

Chiropteran when did you order the sticks? pre july 8th? iirc


my sticks are post july 8th they pull .5 amp = 2.5 watts
 
philipma1957 said:
yeah but I think the psu's are not that good not 12v x 4 as rated but less.

Also I think he has older sticks pre july 8th pull .55 not .5 amps.

Chiropteran when did you order the sticks? pre july 8th? iirc


my sticks are post july 8th they pull .5 amp = 2.5 watts
Click to expand...

20 are from the first batch offered at btcguild, ordered July 1st I think?

The other 30 are from later batches. They all look identical, so I am not sure which are from each batch. They all say Rev 3.00, is there a different Rev for the new ones?
 
Chiropteran said:
20 are from the first batch offered at btcguild, ordered July 1st I think?

The other 30 are from later batches. They all look identical, so I am not sure which are from each batch. They all say Rev 3.00, is there a different Rev for the new ones?
Click to expand...

How are you planning to run those 50? Are you doing linux/raspberry pi, or are you running windows?
 
fleshconsumed said:
How are you planning to run those 50? Are you doing linux/raspberry pi, or are you running windows?
Click to expand...

They've been running for a few weeks now. Using an AMD E-450 powered netbook (win 7) to control them. I do have a raspberry pi but I've heard it won't properly work with the Anker hubs, and I don't have the patience to mess with it too much.
 
My asciminer sticks run on a booksize system that works great. If I was going to buy/build a low power system to run these, I'd try to find a used Atom-powered model and just boot it to the WinPE mining system. You can probably find one of these systems on ebay/craigslist for well under $100 w/o HD.
 
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