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The OS is preconfigured with BOINC, yes, but you get to choose the projects just like if you were to install BOINC for the first time.

Okay, does it have GPU drivers already installed?

Yep, It's meant to work with just about anything right out of the box. Enjoy!

If you need a user manual for help, you can find that here and if you would like to report a problem or need some help, feel free to contact me at: boincosdelta@gmail.com

Thank you for anwsers. Gonna to test that out.