R909 SHA256 Bitcoin Miner 1.5TH

Keeping in mind that you need to understand how to mine and get CGminer up and running.I have 5 usb sticks from minerssupply that work great. I see speeds around 230gh's however i wanted to get up to a couple of th's and usb miners is not ideal to do that. So I ordered the R606 to add to my mining tool belt.I got the product with in 2 day of ordering, I plug it in and added the switches for cgminer that are stated in the directions and BLAM. Everything worked great, very easy to get it up and running. I am getting between 1th and 800 ghs.What a great product, I will be getting 2 or 3 more

This is a great device but it helps to understand what its really capable of and what it does. After a few days of testing I found that I can almost never hit 1TH/s, which is a sort of theoretical maximum. Note you won't see that number in cgminer, you'l see it in your pool as the real number is calculated with ASIC boost which gives it that extra 20% or so.At any voltage and speed level, the device hashes at anywhere 650-850gh/s. So if you think you'll have 1.1th/s locked, its just not in the cards. So its pretty modest compared to an Antminer. If you wanted to hit even 1/4 of what an S9 does, you'd need 4 of these, so that's a lot of money to spend when a proper Antminer isn't much more. This would be a perfect device if it had 3-4x the ASIC chips in it. But at this price point, its really just a tinkering toy.Annoyingly, the model with the power supply is seventy dollars more and any off the shelf barrel connector at 12v 8A is going to run very hot at its near 100watt pull. I wish they would have packaged a fan powered power supply for cheap. The one they sell is 1200 watts and has 10 connectors. For the small hobbyist that is way overkill.This company does not have a real website and looks like a one or two man operaiton. All the instructions and support are through the bitcointalk forum website and you must find the support thread and learn how to make it work from there. This isn't terribly newbie friendly. You'll need to compile code if you use linux. Windows is a bit friendlier, you just run the apps. Note you need a certain version of cgminer and it is a command line app.Getting it to work is a bit different than say an Antminer. It has no controller or ethernet connection. You need a PC running 24/7 to run cgminer. The r606 connects with a usb cable. Thankfully you can do this with a raspberry pi. Again, the instructions are on bitcointalk and you'll need to have some linux admin experience under your belt, especially in regards to how to use screen so you can safely disconnect without killing cgminer, which aren't covered in the official support thread.

working like a charm on my mini solar subsidised setup. Need to get stronger bricks, running on 5A each at the moment.Make sure you use their included USB cable, it wasnt working for me initially and it ended up because i used crappy cables from my gridseed.

This is an excellent entry level miner for anyone wanting to learn more about how to mine bitcoins. Unfortunately it will not make you rich, but I had it running at just above 1th in no time. Power consumption is also relatively low and noise is ok.

Takes 6 weeks to hit minimum payout of .0001 (.93 cents) Will never make money back. If its running, no matter the price of bitcoin, I am losing money. This thing is a scam!!! Buy a $150 3mb gpu, you will get much better results in mining. MAJOR buyers remorse!!!!