The following table describes the default set of project configurations when you create a new project:

Configuration Name | Description
ARM Flash Debug | Compile/assemble for ARM instruction set. Link ARM version of libraries. Load into and run from Flash memory. Compile/assemble with debug information and with optimization disabled.
ARM Flash Release | Compile/assemble for ARM instruction set. Link ARM version of libraries. Load into and run from Flash memory. Compile/assemble without debug information and with optimization enabled.
ARM RAM Debug | Compile/assemble for ARM instruction set. Link ARM version of libraries. Load into and run from RAM. Compile/assemble with debug information and with optimization disabled.
ARM RAM Release | Compile/assemble for ARM instruction set. Link ARM version of libraries. Load into and run from RAM. Compile/assemble without debug information and with optimization enabled.
Thumb Flash Debug | Compile/assemble for Thumb instruction set. Link Thumb version of libraries. Load into and run from Flash memory. Compile/assemble with debug information and with optimization disabled.
Thumb Flash Release | Compile/assemble for Thumb instruction set. Link Thumb version of libraries. Load into and run from Flash memory. Compile/assemble without debug information and with optimization enabled.
Thumb RAM Debug | Compile/assemble for Thumb instruction set. Link Thumb version of libraries. Load into and run from RAM. Compile/assemble with debug information and with optimization disabled.
Thumb RAM Release | Compile/assemble for Thumb instruction set. Link Thumb version of libraries. Load into and run from RAM. Compile/assemble without debug information and with optimization enabled.