Corsair Vengeance (CMZ16GX3M2A1600C10) 16GB (2x8GB) DDR3 Memory Kit UXN8_Z1RRS68

This is a limitation of a 32-bit operating system. In Windows, the Windows memory manager is limited to a 4 GB physical address space. Most of that address space is filled with RAM, but not all of it. Memory-mapped devices (such as your video card) will use some of that physical address space, as will the BIOS ROMs. After all the non-memory devices have had their say, there will be less than 4GB of address space available for RAM below the 4GB physical address boundary. MacOS X Tiger and Leopard are both 64-bit operating systems and will not experience this problem. Neither will 64-bit versions of Windows XP or Vista or Windows 7.

• Great looking, great overclocking memory
• Optimized for compatibility with the CPUs and motherboards
• Next-generation density for the ultimate power user