HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management : IoPageLockLimit Data type : REG_DWORD or REG_BINARY (in bytes, hex)
Example: 4096 (decimal) = 4 KB → wrong format Correct: 0x1000 (hex) = 4096 bytes? No — actual value must be in , often entered as 4096000 (decimal) for 4 MB. iopagelocklimit windows 11
: Do not add or modify IoPageLockLimit on Windows 11. It is a relic from the 1990s and has no effect on modern systems. Focus on proper drivers and power settings instead. It is a relic from the 1990s and
IoPageLockLimit is a legacy registry value that controlled the maximum amount of physical memory (in bytes) that a driver could lock for I/O operations (e.g., reading/writing to disks, network transfers, or sound buffers). Locked memory cannot be paged to disk, ensuring fast, uninterrupted data transfers. Important : IoPageLockLimit was designed for Windows 9x/Me and early NT kernels (up to Windows XP) . In Windows 11 (NT 10+) , it is deprecated and ignored by the system. Does It Work on Windows 11? No. Windows 11 uses a modern memory manager that automatically scales I/O lock limits based on available physical RAM. The system dynamically determines the maximum locked memory per driver, making manual tuning unnecessary and ineffective. Locked memory cannot be paged to disk, ensuring