Biostar H77MU3 Bios Manual - Page 11

H77MU3 UEFI BIOS Manual Active Processor Cores This item sets number of cores to enable in each processor package. Options: All (Default) / 1 / 2 / 3 Limit CPUID Maximum When the computer is booted up, the operating system executes the CPUID instruction to identify the processor and its capabilities. Before it can do so, it must first query the processor to find out the highest input value CPUID recognizes. This determines the kind of basic information CPUID can provide the operating system. Options: Disabled (Default) / Enabled Execute-Disable Bit XD can prevent certain classes of malicious buffer overflow attacks when combined with a supporting OS (Windows Server 2003 SP1, Windows XP SP2, SuSE Linux 9.2, RedHat Enterprise 3 Update 3.). Options: Enabled (Default) / Disabled Intel Virtualization Tech Virtualization Technology can virtually separate your system resource into several parts, thus enhance the performance when running virtual machines or multi interface systems. Options: Disabled (Default) / Enabled Hardware Prefetcher The processor has a hardware prefetcher that automatically analyzes its requirements and prefetches data and instructions from the memory into the Level 2 cache that are likely to be required in the near future. This reduces the latency associated with memory reads. Options: Enabled (Default) / Disabled Adjacent Cache Line Prefetch The processor has a hardware adjacent cache line prefetch mechanism that automatically fetches an extra 64-byte cache line whenever the processor requests for a 64-byte cache line. This reduces cache latency by making the next cache line immediately available if the processor requires it as well. Options: Enabled (Default) / Disabled 10