BTCGarden AM-V1X2 620gh/s Bitcoin Miner (628 watts)

Update: After 2 1/2 hours running it is now doing 602gh/sEverything seems to be working just fine. Fast shipping and arrived rather quickly. The reason for the 4 star rating is it is not hashing anywhere near 620gh/s. It is hashing at 597gh/s or below out of the box. I will try another mining pool and see if that can be why. Also seller stated it was refurbished but, hard to tell because I would think a refurbish machine would have been 100% cleaned of dust gathered by normal use. All in all still a good machine for the price of $150. If I get a good eight months to a year+ I will be pleased.ps. Real easy to setup https://bitcointalk.org/index.php?topic=673324.0

It is pretty power efficient and is very cheap. I think it was a great buy.

The unit is "somewhat in a case", doesn't fit a standard rack but maybe that was not it's purpose.ONLY WORKS WITH RASPBERRY PI - you can not plug this in to a PC.One of the most difficult miners to setup if you do not buy the pre-configured raspberry pi with it - HIGHLY RECOMMENDED.Even with extensive experience setup of the miner on your own could take days to troubleshoot and many dependencies have to be re-written in CG or BFG to make it work. Lack of support and online content also makes setup daunting. Does not work well with Raspberry B+.Once you get it running - works great.