N card mining Ethereum
Hardware
algorithm is difficult to solve in memory. In order to make DAG suitable for memory, each GPU needs 1-2gb of memory. If you get an error prompt: error GPU mining. GPU memory fragmentation? It means you don't have enough memory. GPU mining software is based on OpenCL, amd GPU will be faster than NVIDIA GPU of the same level. ASIC and FPGA are relatively inefficient, so they are blocked. To get OpenCL for chip integration platform, try:
amd SDK OpenCL
NVIDIA CUDA OpenCL
Ubuntu Linux settings
for this quick guide, you will need Ubuntu 14.04 or 15.04 and fglrx image driver. You can also use NVIDIA drives and other platforms, but you have to find your own way to get an effective OpenCL installation, such as genoil's ethminer fork
if you are using 15.04, go to & quot; Software and updates 〉 extra drives & quot; Set to & quot; Use the video driver & quot; from fglrx for AMD graphics accelerator
if you are using 14.04, go to & quot; Software and updates 〉 extra drives & quot; Set to & quot; Use the video driver & quot; from fglrx for AMD graphics accelerator;. Unfortunately, for some people, this method may not work, because there is a known program error in Ubuntu 14.04.02 that will prevent you from switching to the exclusive graphics drive necessary for GPU mining
therefore, if you encounter this program error, go to & quot; "Software and update" update & quot; Select & quot; Pre release reliable update proposal & quot;. Then, back to & quot; Software and updates 〉 extra drives & quot; Set to & quot; Use the video driver & quot; from fglrx for AMD graphics accelerator;. After restarting, it's worth checking that the drive is now properly installed (for example, by going to & quot; Additional drives & quot;)
no matter what you do, if you are using 14.04.02, once installed, do not change the drive or drive configuration. For example, the use of aticonfig – initial (especially the - F, - force option) will & quot; Destruction & quot; Your settings. If you accidentally change the configuration, you will need to uninstall the drive, restart, install the drive again and restart.
it's not easy to dig now. The money g is not enough for the electricity bill
if you want to dig, you'd better join a mine pool. In this way, we can dig more
A卡
1. Power consumption: 243w; Calculation force: 22.4m; Price: 1999 yuan; The number of eth g every 24 hours: 0.015; Revenue generated every 24 hours: 24.8 yuan; Expected payback time: 81.66 days
2. Power consumption of the whole machine: 159w; Calculation force: 24.3m; Price: 1599 yuan; Number of eth g every 24 hours: 0.017; Revenue generated every 24 hours: 27.9 yuan; Expected payback time: 57.31 days
3. Power consumption: 171w; Calculation force: 24.4m; Revenue generated every 24 hours: 27.87 yuan; Expected payback time: 71.73 days
4. Power consumption: 97W; Calculation force: 9.2; Price: 999 yuan; Number of eth g every 24 hours: 0.006; Revenue generated every 24 hours: 10.09 yuan; Expected payback time: 99.1 days
extended data
mining machine risk
1. The problem of electricity charge
in order to make the graphics card full load for a long time, the power consumption will be quite high, and the electricity charge will be higher and higher. Many professional mines at home and abroad are operated in areas with extremely low electricity charges, such as hydropower stations, while more users can only mine at home or in ordinary mines, so the electricity charges are not cheap. Even in a certain residential area in Yunnan, there was a case of crazy mining, which led to a large area trip of the residential area, and the transformer was burned
2. Hardware expenditure
mining is actually a competition of performance and equipment. Some mining machines are composed of more such graphics card arrays. With dozens or even hundreds of graphics cards, the cost of hardware and other costs is very high, and there is a considerable expenditure in mining
3, currency security
the withdrawal of bitcoin requires hundreds of keys, and most people will record this long string of numbers on the computer, but the frequent problems such as hard disk damage will make the key permanently lost, which also leads to the loss of bitcoin
a PC needs to be configured to run the mining program. The main hardware includes: graphics card, motherboard, power supply, CPU, memory and hard disk
no, it can only be handled at the police station where the registered residence is located. Forenoon, p>
, the application for the identity card, the renewal of
Management Agency: the
of the registered residence of the local police station: the personal
advisory telephone: 87280478
supervision and complaint telephone: 87280478
reception time: 8:30-11:30 in the morning, 14:00-17:00 in the afternoon; Summer time: 8:30-11:30 a.m., 14:30-17:00 p.m.
number of attendants to the office window: 2 times
processing time: 30 days
extended data
materials required for ID card processing in Hangzhou City:
my household register, The original identity card
is required to be returned. The conditions for accepting identity cards in Hangzhou are: the Chinese citizen
who has reached the age of sixteen years in Hangzhou who has registered residence in China should apply for the identity card in accordance with the People's Republic of China resident identity card act. Chinese citizens under the age of 16 may apply for resident identity cards in accordance with the law of the people's Republic of China on resident identity cards
Hangzhou city identity card handling proceres:
I carry home address book to the registered residence of the local police station for
if the quality of the cooling fan of the graphics card is not ideal, the fan needs to be replaced. When buying a new video card fan, it's best to take the video card with you and buy a suitable video card fan
most fans are fixed with spring buckles or screws, so we can easily remove them with a screwdriver and tweezers, and unplug the power connector. When replacing, clean the original thermal conctive silicone grease on the chip,