All About BTC, LTC, ETH mining as well as other alternative crypto currencies
Today we’ve decided to finally do a measurement to see how much power does a Bitmain AntMiner S1 Bitcoin ASIC use both at idle (not mining), at stock 180 GHS and at overclocked 200 GHS mode. We’ve been using Bitmain AntMiner S1 miner for a while now and have already shared our best settings for overclocking AntMiner S1 to 200 GHS as well as some very interesting thermal images that what gets hot and how hot actually gets on the AntMiner S1 board. We are going to be measuring the power consumption (at the power socket) with the help of a very good 80 Plus Gold certified Power Supply (Seasonic SS-400FL) that is able to deliver about 90% efficiency at maximum load. This means that the actual power usage of the ASIC miner is 10% less than what our measuring device shows and the other 10% of power are being lost during the conversion essentially in the form of heat dissipated by the PSU. What you are paying for is the actual power measured by the device we are using for the tests of the power consumption.
The idle power we have measured was 75W (67.5W + 7.5W). This is the power usage that you can expect from the device as soon as you power up the AntMiner S1, it takes some time to start up and to connect to the Internet in order to get work from the pool and the power usage during that time is about 75W. Also should your ASIC miner loose connection to the Internet or the pool it is configured to mine at gets down and there is no backup or the other pools are also not available the device will consume 75W of power doing essentially nothing.
What you will be more interested in though is the power usage of the Bitmain AntMiner S1 ASIC when it is working and mining for Bitcoions. At the default frequency of 375 MHz of the Bitmain chips used in this device and a hashrate of about 180 GHs you can expect a power consumption of about 407W (366.3W + 40.7W). And if you overclock the device to 393.75 MHz as per our guide here you are going to be getting 20 GHS more hashrate at the cost of a small increase in power usage. In 200 GHS overclocked operating mode Bitmain AntMiner S1 ASIC will use about 422W (379.8W + 42.2W). So if you haven’t overclocked your Antiner S1 yet, then you should and our overclocking guide will ensure you get low HW error rate, lower power consumption and stable 200 GHS of hashing performance.
AntMiner U1 is the smaller USB-based Bitcoin ASIC devices made by Bitmain, they contain just one BTC ASIC mining chip (BM1360) and has been designed to be powered by a USB 2.0 port. These devices are rated at 1.6 GH/s hasrate with 2W power consumption and you can downclock or overclock them by software as long as you are able to provide sufficient power and cooling. Bitmain recommends that you provide additional cooling for these devices if you plan to overclock them over the stock 1.6 GH/s performance, but we checked how hot these small USB powered BTC ASIC devices can get and their “default” hashrate and our findings confirm that it will be a good idea to think about using a fan to cool them even at 1.6 GH/s. On the back of the AntMiner U1 there is an aluminum cooling plate and our thermal images show that in just about 10 minutes of use this cooler gets to a temperature of about 68.8 degrees Celsius and that is actually quite hot.
The other side of the Bitmain AntMiner U1 is more important as there you will find the actual elements of the device on the PCB, including the Bitmain BM1360 chip that does the actual calculating as well as the power elements that also get hot. The thermal image of this side of the USB ASIC shows even higher temperatures – up to 74.8 degrees Celsius maximum measured temperature. And while even at these quite high operating temperatures the AntMiner U1 does manage to work good and stable enough without active cooling, it is a wise idea to keep the temperatures lower especially on the long run if you plan on mining with these USB BTC ASIC devices for months without problems. Of course if you do plan to overclock the active cooling with the help of a fan is a must do!
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