Common Options : Enabled, Disabled

Details

This BIOS feature is used to enable or disable the CPU's L1 (primary) cache. Naturally, the default setting is Enabled.

This feature is useful for overclockers who want to pinpoint the cause of an unsuccessful overclocking attempt. For example, if a CPU cannot reach 1GHz with the L1 cache enabled but can do so when the L1 cache's disabled; then the L1 cache is what's stopping the CPU from reaching 1GHz stably.

However, disabling the L1 cache in order to increase the overclockability of the CPU is a very bad idea, especially in current and future processor designs that stress on deep pipelines.