Top 4 Acer Aspire 7741Z4643 Ram

Superior power efficiency: A 20% reduction of power (Operating Voltage decreases from 1. 5V to 1. 2V) incredible speeds up to 2800MHz transfer bandwidth up to 22. 4GB/s thermal conductive technology (TCT) for great heat dissipation high-quality 10-layer Black PCB with 2oz of copper for superior stability and cooling performance Supports Intel Core i7 Haswell-E HEDT (high-end desktop) processor and the x99 platform supports Intel XMP 2. 0 (extreme Memory Profile) RoHS Compliant

Vengeance LPX memory is designed for high performance overclocking. The heat spreader is made of pure aluminum for faster heat dissipation, and the custom performance PCB helps manage heat and provides superior overclocking headroom. Each IC is individually screened for performance potential. The DDR4 form factor is optimized for the latest Intel DDR4 motherboards and offers higher frequencies, greater bandwidth, and lower power consumption than DDR3 modules. Vengeance LPX DDR4 modules are compatibility tested across Intel DDR4 motherboards for reliably fast performance. They’re available in multiple colors to match your motherboard, your components, or just your style.

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.