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  • ASICMiner Block Erupter USB 330MH/s Sapphire Miner
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ASICMiner Block Erupter USB 330MH/s Sapphire Miner

178 customer reviews
| 82 answered questions

Available from these sellers.
  • MINIMUM ORDER OF 5 UNITS FOR THIS DISCOUNTED PRICE.
  • BitFountain
  • ASIC Block Erupter USB
  • 300 MH/s
  • Sapphire
2 new from $14.14 5 used from $11.99

Product Description

The Original Asic Miner, That Started it all! 3-Day Sale !!!


Product Details

  • Product Dimensions: 3 x 1.4 x 0.5 inches ; 0.5 ounces
  • Shipping Weight: 0.8 ounces
  • ASIN: B00CUJT7TO
  • Item model number: USB BE Rev. 3.00
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (178 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

130 of 141 people found the following review helpful By Thomas J. Schorsch on July 24, 2013
Verified Purchase
This product is well designed and worked immediately in Ubuntu with BitMinter. They also worked with cgminer. I have two of these and both get around 335 MH/s. They do run hot and if you want them to last you should have a small fan to cool them.

The only issue here is profitability. Power consumption is very low so this is not really a factor. They will use about 22 kwh per year, at about $0.20 per kwh in NYC, the cost is about $4.40 per year. Elsewhere in the US, your cost should be a little less. (This does not count the extra cost for running your PC if you don't already let it run all day.)

At the btc/USD exchange rate of about $95 you will need to earn a little more than 1 btc in order to break even. At the moment (July 24, 2013), these earn about 0.005 btc per day. So it would take about 200 days to earn 1 btc. But since the difficulty is constantly going up, it will take longer than that, probably much longer. If the price of these is too high, these can be unprofitable. UPDATE: as of September 4, 2013, these will earn about 0.0019 BTC per day or about 0.057 BTC (approx $7.50) per month.

Since these are effectively an investment in bitcoins, it is important to note that you should compare them with how many btc you can buy at the same price at the time of purchase. If you cannot earn this amount of btc back over the life of the product you can lose money or earn far less than you could have. If you paid 1 btc for one of these and you earn only 0.5 btc over its lifetime but the btc exchange rate goes dramatically up, you will make a profit but less than half of what you would have if you just bought the bitcoins outright. It is just the profit from earned bitcoins and in this case you should have just bought the bitcoins.
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72 of 81 people found the following review helpful By TheUrbanNerd on September 25, 2013
Verified Purchase
I bought nine of these through Jones Gear (great seller, great price) along with an Anker® USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter [VIA VL812-B2 Chipset and updated Firmware 9801], the ARCTIC Breeze Mobile USB-Powered 92mm Portable Fan, Portable Cooling Solution, Quiet Fan - White and Cosmos ® 8 PCS Aluminum VGA video gaming card RAM Cooling Heatsinks heat sink cooler + Cosmos Cable Tie as the Block Erupters can run hot.

I got this product because I wanted to learn more about Bitcoin, and I thought it would be a fun hobby. I have not been disappointed. They're great conversation pieces and it's fun to watch the green lights go off when one delivers a Proof of Work. I run these through the BitMinter mining application and I think after installing the drivers it took me all of 30 seconds to get hooked up and hashing in the pool. They typically hash 333-335 MH/s when they're running at full capacity, so better than the advertised 330 MH/s which is great.

I should state, however, that if you're looking to buy these as an investment in Bitcoin then you should just buy XBT directly. With the recent difficulty increases (typically ~30% every ~14 days), you will likely never make your money back on these. Even buyers of the heavy-duty ASIC mining devices (200-400+ GH/s) are looking at zero to negative profits by the time of delivery.
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83 of 95 people found the following review helpful By MattD on November 5, 2013
Verified Purchase
This thing gets very hot, be sure to have some air moving across it.

It does perform SHA-2 hashes at 330 mega hashes per second. However, I'm skeptical of its 2.5 watt power claims. This thing is very hot.

IT WILL NEVER PAY FOR ITSELF. Bitcoin difficulty is continuing to climb. Difficulty just hit 510,929,738 and is forecast to hit 657,648,393 in 13 days. Difficulty == bad news for mining hardware.

If you have a USB Block Erupter right now, it is expected to produce ~0.008 BTC this month (about $2 worth of bitcoin) if run 24/7 in a mining pool. It's bitcoin production will continue to decline in ~30% increments as the bitcoin difficulty rises every 12 to 15 days. I suspect this USB Block Erupter could produce around 0.04 BTC during it's useful life (~6 months). The only hope for recovering your investment is if bitcoin's price rises dramatically.

I bought one simply as a coffee-table/conversation item. This device appears to be at End-of-Life; the cost of manufacturing it is probably in excess of its current retail price. I just really wanted to have a strange ASIC chip; a custom designed SHA-2 monster (this one is labeled BE100) seems to qualify. They probably commissioned a End-of-Life process from TMSC or similar. It's hard to tell.

You could wait for the fire sale to continue. They sold for a lot more earlier this year (they were a lot more productive too). These USB Block Erupters will be that much more obsolete 14 days from now. Just be sure to get one before they are fully down stocked.

---Update as of November 20th---

Well, as I said... your only hope to recover your investment is if bitcoin's price rises dramatically. I bought my ASiC block eruptor for $9+shipping in late October when BTC was around $190.
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