R-BOX 32 -37 GH/s ASIC SHA-256 Miner ASICMiner Gen3 30-50 Watts Total

A very good and reliable piece. Got two of them, and the seller compensated me with an extra one for free. These negroes have been mining for almost a month now with no worries, over clocked at 290, three of them constantly total hashes at an average of 105/120GH. Really cool for starters. And Yeah, the seller is EYEBOOT!

This is a decent device that gives a steady 34-35 Mh/s at freq 290. However, setup can be quite an ordeal, had to try 3 dif power supplies (it is 12v 5w but draws over 40 watts PSU should be at least 60w), 2 dif computers and literally hundreds of config files / driver combos before finding one that worked. And that was after spending many hours researching the device. The standard setup found on the web may or may not work for you, just be prepared to take some time with setup (took me a full day). Oh, and in the config file you use (cmd or bat) setting freq is NOT --anu it is --rmu and if you have more than one unit you will need the -s rockminer:all argument as well. While these things are listed as running at 270 -300, I have not been able to find any config that allows it to go above 290 (nearly all configs I tried resulted in a drop to default settings at 270). With a pool you can mine between 0.0006 and 0.003 BTC per day (depending on pool luck) with this device. (at curr difficulty as of 6/17/14).Update 8/3/14Now that cgminer, bfgminer and official Rockminer fork have all been updated these are now simple to install. I now have 3 of them hashing away at 34 ghs with an error rate of just 1.5%. I'd say these are the perfect starter miner for anyone looking to get into bitcoin mining. They are small, quiet and relatively cool (43 C under full load). And you can now try over clocking if you want as the new software makes this possible very easily. Rockminer is extremely responsive to custome questions and concerns (Thanks Roxxie). With price now down to $60 highly recommended. Just remember you won't make a profit at current prices.

The item was damaged srry for the rating but this what i recieved

The rock miner was working well for only about 4 months then all of a sudden the fan stops working. It had good hashes for its price but did not last too long.

This is a bit of a tough review to score since I do think that it is a great Bitcoin miner that offers a lot of bang for the buck and reasonable power consumption. The device does as it says and it is surprisingly quiet and cool so those are huge pluses as well. However, I've configured quite a few different ASIC's for myself and some friends and this has been by far the most difficult one, so that's why I'm only giving it three stars. When hashing they're awesome, but compared to Antminer S1, Block Erupter Cube, and the myriad USB stick miners this is much more complicated to get to work. Ended up hooking it to a Raspberry Pi because my PC never saw the device, even after installing the special cgminer suggested by Rock Miner with their driver via Zadiq. Never worked. Good thing they offered a simple Raspberry Pi image that does the trick but I'm not too fond of the software in that image.

I got two of these, but the first one I received was DOA. It would power up, but Windows 7 never recognized any USB device at all when I jacked it in. So far, the vendor that I bought it from has promised to get me a new unit sent and to reimburse me the $29.70 that it cost me to ship it back to Hong Kong.I got the second one the next day, and it works exactly as advertised. Windows 7 found the device right away. Even though you have to download a driver installer and a special CGminer program to make it all work, setup was super easy. I was mining in about ten minutes. I've averaged a solid 32 GH/s for the past two days, so the working unit performs exactly as advertised, and it is returning BTC at about the rate that I had calculated. I'm really happy with the working miner, but I hope that I got a rare lemon in the DOA box and that this isn't something that happens often, because I'm planning on adding several more to my collection.

Runs great! 2 of these are cranking out 66 - 68 Gh/s not only will I order again, I already have.If you are looking for a great entry level miner these are definitely the way to go if you are wanting to not break the bank and get a lot of bang for your buck. no worries about high power or high priced hubs, cooling or anything with these, just plug them in and start mining.

Package was well padded and it arrived functional. However, after 2 days the power supply died. I am looking to order a replacement for it, but it will have to wait until the end of the month. I cannot fault the seller, I knew it was used and sometimes s*** happens. The unit still appears to function, and though I have a multi-level power supply, I do not believe it has enough amps to fully power it.