Loadable module support: Under this configuration category are three options related to the kernel's support for modules. In general, all three options should be enabled.

Processor type and features: This section includes various CPU-specific configuration options. Of particular importance is the "Symmetric multiprocessing support option", which should be enabled if your system has more than one CPU. Otherwise, only the first CPU in your system will be utilized. The "MTRR Support" option should generally be enabled, since it will result in better performance in X on modern systems.