At present, the Einstein At Home application runs in PowerPC mode on these Intel-based Macs.
If you experience this, you're probably using an outdated BOINC Core Client (version < 5.3) that reports the wrong platform. Download and install the latest BOINC Core Client (currently 5.4.9) from here, and maybe reset the project. This will download the albert_4.46 App for the platform i686-apple-darwin.
The 4.59 app that's currently in public Beta test and thus needs to be installed manually has been reported to be about 4 times as fast.
Both Apps run natively on Intel Macs and have working graphics, thus work with the BOINC screensaver that comes with the (standard GUI) Client.
BM
