We've redesigned, updated, rerouted and regrouped the library for better discoverability and a better flow. You can visit the new documentation here.
According to historical data from SketchUp-ur-Space , the minimum hardware requirements for running SketchUp Pro 2015 include: 2.1+ GHz Intel processor. RAM: 4 GB minimum (8 GB recommended for 64-bit). Disk Space: 300 MB of available space.
Some older Ruby scripts/plugins only work correctly on older versions of SketchUp.
Understanding SketchUp Pro 2015 (v15.2.687): Features and Legacy
The term "Portable" in the context of usually refers to a version of the software that has been modified to run without a traditional installation. These versions are often stored on USB drives and do not write to the Windows Registry.