Specifies the size of the secondary processor cache, also known as the L2 cache. Data in this entry is used only when the Hardware Abstraction Layer (HAL) cannot detect the L2 cache.
Value Meaning
0 - Sets the L2 cache size to 256 KB.
Number of kilobytes - Sets the L2 cache size to the value specified.
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Tovabba:
Do not change the SecondLevelDataCache entry
Some third-party sources have erroneously reported that modifying the SecondLevelDataCache registry entry in HKEY_LOCAL_MACHINE\System\CurrentControlSet
\Control\Session Manager\Memory Management
can enhance system performance. The second level (L2) cache is recognized by the operating system and is fully utilized regardless of the setting of this parameter.
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Vagyis a valoban a procecesszor masodlagos cache meretet tartalmazza, ha 0, akkor 256, egyebkent az ami, de ezt autodetektalja a rendszer, es a beallitastol fuggetlenul a hardwareben levo ertekkel dolgozik.