Common Options : Enabled, Disabled

Details

This BIOS feature is used to enable or disable the CPU's L2 (secondary) 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 L2 cache enabled but can do so when the L2 cache's disabled; then the L2 cache is what's stopping the CPU from reaching 1GHz stably.

You may choose to disable L2 cache in order to overclock higher but the trade-off isn't really worth it. Processor speed is far outstripping DRAM speed and the L2 cache is critical in reducing the DRAM bandwidth bottleneck and preventing the processor from stalling.