Toshiba Portege R100 Maintenance Manual - Page 158

3 Tests and Diagnostics 3.24 SETUP 8. Others Whether or not you need to configure the computer with these options depends primarily on the kind of software or peripherals you use. (a) CPU Cache Use this option to enable or disable the CPU cache. Enabled Disabled Enables the CPU cache. (Default) Disables the CPU cache. When "Enabled" is selected, the following sub-window is displayed to select the cache write policy. The options for this setting are Write-back (default) and Write-through for CPU cache. OPTION Write policy = Write-back Write-back policy provides better system performance, because main memory is accessed only when necessary to update the cache contents with changes in main memory. Write-through policy accesses main memory every time data is handled by the processor. (c) Level 2 Cache Use this option to enable or disable the level 2 cache. When "CPU Cache" is set to "Disabled", this option cannot be changed. Enabled Disabled Enables the level 2 cache. (Default) Disables the level 2 cache. (d) Dynamic CPU Frequency mode Use this option to choose a setting from the followings. This is displayed only when the CPU is a Mobile Intel® Pentium® III processor-M. Dynamically Switchable Enables Intel SpeedStep technology. When the computer is in use, CPU power consumption and clock speed are automatically switched when necessary. (Default) Always High Disables Intel SpeedStep technology and always runs the processor at its fastest speed. 3-68 PORTEGE R100 Maintenance Manual (960-440)