By the way remember you can buy opal with your GPU !
http://altnuts.comIf you have a Windows OS and AMD Graphic card you need to:
have decent drivers: at least 14.6 ->
http://support.amd.com/en-us/download/download & install Microsoft.NET 4.5 framework->
http://www.microsoft.com/fr-fr/download/details.aspx?id=42642download & install AMD APP SDK (for Windows 32 bits) ->
http://developer.amd.com/amd-license-agreement-appsdk/ (scroll down and click accept)
or AMD APP SDK (for Windows 64 bits) ->
http://developer.amd.com/amd-license-agreement-appsdk/ (scroll down and click accept)
download and extract sph-sgminer x11mod ->
https://github.com/lasybear/sph-sgminer_x11mod (i like the 4.1.0)
Reboot your Computer.
Then you need to create the .conf file (Remember the extension must be seen, to be sure):
Windows 8 : Open a File Explorer window and click the "View" tab and tick "File name extensions".
Windows 7/vista : Open Windows Explorer and click the "Organize" button towards the top left. Choose "Folder and search options" from the menu. Then click the "View" tab in the window that opens, then scroll down and untick "Hide file extensions for known file types".
So create a new text document with your notepad and copy/paste the following: (remember to edit Your OPAL Address and yourminername):
{
"pools" : [
{
"url" : "stratum+tcp://stratum1.altnuts.com:4333",
"user" : "YOUR OPAL ADDRESS.yourminername",
"pass" : "x"
}
]
,
"intensity" : "16",
"worksize" : "256",
"kernel" : "x11mod",
"lookup-gap" : "2",
"thread-concurrency" : "8192",
"shaders" : "0",
"gpu-threads" : "2",
"gpu-engine" : "1050",
"gpu-fan" : "0-0",
"gpu-memclock" : "1500",
"gpu-memdiff" : "0",
"gpu-powertune" : "0",
"gpu-vddc" : "0.000",
"temp-cutoff" : "87",
"temp-overheat" : "83",
"temp-target" : "75"
}
... Save this file as sgminer.conf in your sph-sgminer x11mod folder (beware not to save it as sgminer.conf.txt).
These .conf settings work for AMD 7970, R9 270x, R9 280x.
You should change thread-concurrency, gpu-engine, intensity (usually 13-18) and gpu-memclock values to fit your GPU habits. (if you change thread-concurrency, delete the x11modXXXXXXg2tcXXXXwXXXl4.bin file in your sph-sgminer x11mod folder)
In order to change your
gpu-engine and gpu-memclock value please read
https://litecoin.info/Mining_hardware_comparison , the "C" Column is for gpu-engine value and the "M" is for gpu-memclock values.
Now create another text document with your notepad and copy/paste:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
sgminer.exe -k x11mod -o stratum+tcp://stratum1.altnuts.com:4333 -u YOUR OPAL ADDRESS.yourminername -p x
... Save this file as Buyopal.bat in your sph-sgminer x11mod folder (beware not to save it as Buyopal.bat.txt) and create a shortcut that you cut/paste on your desktop: to start mining, just double click this Buyopal.bat shortcut ! be patient, first time it take 30 seconds to run.
For more info, please dont spam this topic and read the topic of lasybear
https://bitcointalk.org/index.php?topic=623409.0You must not have Hardware error "HW" in Sgminer, even a few, if so please read
https://bitcointalk.org/index.php?topic=623409.msg7615953#msg7615953Hope it helps
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