[Announcement] Block Erupter USB

[alibert]

I also have a 7950, but mining on it makes no sense for me. 1 kW/h costs 0.27€ here in Germany, so at 350W*24h I have 8.4 kW/h ( = 2.268€ electricity per day).

[1714314033]

1714314033

[af_newbie]

what is your hw error rate? i get ~ 4,7 per hour

ICA0                | (5s):334.2M (avg):333.2Mh/s | A:8655 R:67 HW:118 U:4.3/m

Around 1%

Is that with cgminer or bfgminer?  I get 12% with cgminer and about 5% with bfgminer

[alibert]

cgminer 3.1.1 on debian linux (armtel)

[Economics]

What FPGA/ASIC is used in the BlockErupter?

-E

[radiumsoup]

I also have a 7950, but mining on it makes no sense for me. 1 kW/h costs 0.27€ here in Germany, so at 350W*24h I have 8.4 kW/h ( = 2,268€ electricity per day).

For those of us in IndoChina or the majority of the English speaking world, he means €2.268 per day (just to help others avoid the shock of "you pay WHAT for electricity?!?!?" that I just had before reading it a second time)

[alibert]

I also have a 7950, but mining on it makes no sense for me. 1 kW/h costs 0.27€ here in Germany, so at 350W*24h I have 8.4 kW/h ( = 2,268€ electricity per day).

For those of us in IndoChina or the majority of the English speaking world, he means €2.268 per day (just to help others avoid the shock of "you pay WHAT for electricity?!?!?" that I just had before reading it a second time)

I'm sorry, i meant 2€ 27 Eurocent... edited

[radiumsoup]

no problem, really - was just a little confusing because you used a full stop as the decimal placeholder at first, then switched to the comma

[elasticband]

At 1% it's probably an unlocked account, or his bank is even worse than the average bank!

They can be resold but it will certainly not be at that price.

Look, I bought one, but let's be real.

These bitches are selling @ $450 right now on eBay.  I bet they'll stay that way until Avalon's chips are released.

indeed. Than I'll buy one for the lolz. I want one because they have collectable value, but would never pay >100$ for them

or i am selling them for 2.35BTC

https://bitcointalk.org/index.php?topic=224256.msg2389085#msg2389085

[arklan]

What FPGA/ASIC is used in the BlockErupter?

-E

custom ASIC from ASICMINER

[CanadianGuy]

What FPGA/ASIC is used in the BlockErupter?

-E

custom ASIC from ASICMINER

The original plan involved stuffing a cat into the product to increase hashrate, but it got fried in the process 

[PeZ]

My little USB Block Erupter has been hashing away for 24 hours at 334MH/s and I have made $0.92 at BTCGuild. At that rate I will pay off the cost of the device in 9 months! With the coming increase in difficulty, that might jump up to infinity!

<praying for BFL>

[HowGudAmI]

My little USB Block Erupter has been hashing away for 24 hours at 334MH/s and I have made $0.92 at BTCGuild. At that rate I will pay off the cost of the device in 9 months! With the coming increase in difficulty, that might jump up to infinity!

<praying for BFL>

Sadly, each day these devices become a little less profitable... Bitcoin is soooo fast moving it is hard to keep up.

[GuiltySpark343]

Some days it feels like: http://www.youtube.com/watch?v=6DGNZnfKYnU

[arklan]

Some days it feels like: http://www.youtube.com/watch?v=6DGNZnfKYnU

yes, please, don't play.

[kano]

-S all now keeps the cmd. window open but nothing shows

Ok, try with: bfgminer -S all -D -T -d?

Edit: Also! Be sure you're using the special build I posted for Block Erupter USB!

when i goto that post and download either 64 or 32 bit, norten then removes the file from my computer after download as it is unsafe?

Try the latest cgminer 3.2.0 released today
https://bitcointalk.org/index.php?topic=28402.0

It auto detects everything, auto sets the settings and just runs (No -S options and no --icarus-timing required)
On linux it's rock solid - would love to know how it works on a windows system with that many USB's.

... and a week later ...
We've got cgminer 3.2.1 out now

Seems there was an initialisation problem that (unfortunately) worked without any problem on my Desktop (Fedora 18) and my Windows VM running on it also.

Finally tracked it down in time for the 3.2.1 release:
https://bitcointalk.org/index.php?topic=28402.msg2397710#msg2397710

Leave feedback in the cgminer thread if you find any problems - thanks

[opticbit]

mine is getting hot, noticed some screws, is the heat sync upgradeable?

[arklan]

mine is getting hot, noticed some screws, is the heat sync upgradeable?

i've unscrewed those screws on some defective ones i have - they're all that's holding the heatsink on, and its a flat surface it's on, so yea, there's no reason i can see that you couldn't unscrew it and replace it.

[alibert]

what is your hw error rate? i get ~ 4,7 per hour

Summary of runtime statistics:

 [2013-06-07 17:20:11] Started at [2013-06-06 06:40:11]
 [2013-06-07 17:20:11] Pool: stratum+tcp://mmpool.bitparking.com:3333
 [2013-06-07 17:20:11] Runtime: 34 hrs : 39 mins : 59 secs
 [2013-06-07 17:20:11] Average hashrate: 364.3 Megahash/s
 [2013-06-07 17:20:11] Solved blocks: 0
 [2013-06-07 17:20:11] Best share difficulty: 17.6K
 [2013-06-07 17:20:11] Share submissions: 9096
 [2013-06-07 17:20:11] Accepted shares: 9096
 [2013-06-07 17:20:11] Rejected shares: 0
 [2013-06-07 17:20:11] Accepted difficulty shares: 9096
 [2013-06-07 17:20:11] Rejected difficulty shares: 0
 [2013-06-07 17:20:11] Reject ratio: 0.0%
 [2013-06-07 17:20:11] Hardware errors: 89
 [2013-06-07 17:20:11] Utility (accepted shares / min): 4.37/min
 [2013-06-07 17:20:11] Work Utility (diff1 shares solved / min): 4.42/min

 [2013-06-07 17:20:11] Stale submissions discarded due to new blocks: 1
 [2013-06-07 17:20:11] Unable to get work from server occasions: 2
 [2013-06-07 17:20:11] Work items generated locally: 25006
 [2013-06-07 17:20:11] Submitting work remotely delay occasions: 0
 [2013-06-07 17:20:11] New blocks detected on network: 246

 [2013-06-07 17:20:11] Summary of per device statistics:

 [2013-06-07 17:20:11] ICA0                | (5s):366.4M (avg):364.3Mh/s | A:9096 R:0 HW:89 U:0.0/m
 [2013-06-07 17:20:11]

[-ck]

Finally got mine!

Code:

 AMU 0:                | 334.7M/328.5Mh/s | A:45 R:0 HW:1 U:5.44/m

It's actively cooled, and alone on a USB hub with two power sources. So I doubt you can do better regarding HW errors (unless the heatsink is really bad?).

Linux users with their own kernel setup should compile/load the cp210x kernel module.

Not quite, there is no module requirement if you are mining with cgminer 3.2.1+ as it uses direct usb communication and will unload that module you just recommended.

[dropt]

mine is getting hot, noticed some screws, is the heat sync upgradeable?

I'm surprised no one has really talked too much about this.  Without active cooling mine get hot.  Real hot.  Burn yourself hot.  With a fan on them they're surprisingly cool.