GUIMiner (BITCOINS)
a GPU/CPU Bitcoin miner for Windows based on poclbm
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GUIMiner-Scrypt (LITECOINS and scrypt-chains)
a GUIMiner fork for mining scrypt-chains (like LiteCoin)
Download Now (Updated Version)
What is GUIMiner?
GUIMiner is a graphical frontend for mining Bitcoins. It provides a convenient way to operate Bitcoin miners from a graphical interface. It supports both ATI and NVIDIA GPUs, as well as CPU mining. It supports both pooled mining and solo mining, and embeds a list of mining pools to choose from.
Where can I download GUIMiner?
You can download GUIMiner from the official GitHub repo.
Where can I get news and updates about GUIMiner?
Have a look at the official forum thread on BitcoinTalk.
Where can i find a hardware comparison?
You can find a hardware comparison on bitcoin.it.
I want to mine scrypt-chains like Litecoin (LTC), can i use guiminer?
In order to mine litecoin or other scrypt-chains you have to download Guiminer-scrypt. Download it here! (newest version)
How can i increase the hashing rate?
Try to use parameters like -v -w128 and/or overclock your GPU. Please note that we are not responsible for damage to the graphics card.
What is GUIMiner-Scrypt?
GUIMiner-scrypt is a graphical frontend for mining Litecoins and scrypt-chains. It provides a convenient way to operate Litecoin miners from a graphical interface. It supports both ATI and NVIDIA GPUs, as well as CPU mining. It supports both pooled mining and solo mining, and embeds a list of GPU defaults to choose from.
Where can I download GUIMiner-Scrypt?
You can download GUIMiner-scrypt from the official GitHub repo.
Where can i find a hardware comparison?
You can find a hardware comparison on litecoin.info.
I want to mine Bitcoins (BTC), can i use guiminer?
In order to mine Bitcoins you have to download Guiminer. Download it here! (newest version)
How can i increase the hashing rate?
Try to change the parameters or chech the "mining hardware comparison". Please note that we are not responsible for damage to the graphics card.

Verification failed, check hardware?
Download the AMD Catalyst 12.6 Beta driver!
http://support.amd.com/en-us/kb-articles/Pages/AMDCatalyst126beta.aspx
No OpenCL devices detected?
Install ATI Stream SDK. If still not working try to install (first uninstall current drivers) another version of the catalyst drivers and/or other version of ATI Stream SDK.
No JSON object could be decoded?
Delete your poclbm.ini file. This file is located here:
-XP: C:\documents and settings\<user>\app data\poclbm
-VISTA/7: C\users\<user>\app data\roaming\poclbm
GUIminer seems not to start mining, due to no connection?

Try to hit the button "stop mining" and after a few seconds try to "start mining" again.

GUIminer-scrypt hangs at Connecting?
Try starting CGminer from the subfolder of guiminer script. If you start it there and it stops working check the following question.
Windows error: Cgminer has stopped working?
Download CGminer 3.7 and replace the old version in the subfolder of guiminer with the new one!
Download CGminer 3.7.2 HERE!
No OpenCL devices detected?
Install ATI Stream SDK. If still not working try to install (first uninstall current drivers) another version of the catalyst drivers and/or other version of ATI Stream SDK.
No JSON object could be decoded?
Delete your poclbm_scrypt.ini file. This file is located here:
-XP: C:\documents and settings\<user>\app data\poclbm
-VISTA/7: C\users\<user>\app data\roaming\poclbm

This site is not affiliated with GUIMiner and is not the official page of the software.
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