By Gabriel Ikram - March 21, 2008
AMD's latest roadmap details much of its next-generation chipset architecture, codenamed RD890 and RD880. The pinnacle feature of this new architecture is the inclusion of an input/output memory management unit, or IOMMU.An IOMMU is a device that supports mapping memory addresses. Since an IOMMU holds many benefits in server applications, it can sometimes be found in high end server hardware, but at the moment no desktop chipsets support IOMMU. The IOMMU connects a DMA-capable I/O bus to the primary storage memory of a PC. The memory management unit maps virtual addresses to physical addresses, similar to what a CPU memory management performs. Although presently there are few desktop applications that can benefit from IOMMU setups, the technology can greatly benefit virtualization applications.
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