Parece que esta opção desapareceu da interface do usuário. Mas ainda está disponível como configuração de registro ( documentação do Microsoft Technet ):
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
DWORD: LargeSystemCache
e
HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters
DWORD: Size
Não tenho certeza se a alteração dos valores padrão afetará o sistema.
Description
Specifies whether the system maintains a standard size or a large size file system cache, and influences how often the system writes changed pages to disk.
Increasing the size of the file system cache generally improves server performance, but it reduces the physical memory space available to applications and services. Similarly, writing system data less frequently minimizes use of the disk subsystem, but the changed pages occupy memory that might otherwise be used by applications.
Option setting Large System Cache value Size value --------------------------------------------------------------------- Minimize memory used 0 1 Balance 0 2 Max throughput for file sharing 1 3 Max throughput for network app 0 3