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Encyclopedia > Direct Connect Architecture

The Direct Connect Architecture is the I/O architecture of the This article or section should include material from Athlon The Athlon 64 (codenamed ClawHammer and Newcastle) represents AMDs entry into the consumer 64-bit microprocessor market, released on September 23rd, 2003. This processor is based on the AMD64 architecture. It is AMDs first eighth generation processor core (K8... Athlon64 and The AMD Opteron is the first eighth-generation x86 processor (K8 core), and the first of AMDs AMD64 (x86-64) processors, released April 22, 2003. It is intended to compete in the server processor market, particularly in the same market segment as the Intel Xeon processor. The TOP500 list... Opteron Microprocessors, including an Intel 80486DX2 and an Intel 80386 A microprocessor (abbreviated as ┬ÁP or uP) is an electronic computer central processing unit (CPU) made from miniaturized transistors and other circuit elements on a single semiconductor integrated circuit (IC) (aka microchip or just chip). Before the advent of microprocessors, electronic... microprocessors from Advanced Micro Devices, Inc. (AMD) ( NYSE: AMD) is a manufacturer of integrated circuits based in Sunnyvale, California. It is the second-largest supplier of x86 compatible processors, and a leading supplier of non-volatile flash memory. It was founded in 1969 by a group of defectors from Fairchild Semiconductor, including... AMD. It consists of the combination of three elements:

  • The microprocessor is directly connected to DRAM is a type of random access memory that stores each bit of data in a separate capacitor. The number of electrons stored in the capacitor determines whether the bit is considered 1 or 0. As the capacitor leaks electrons, the information gets lost eventually, unless the charge is refreshed... DRAM memory through an integrated memory controller.
  • The microprocessor is directly connected through a natively implemented HyperTransport (HT), formerly known as Lightning Data Transport (LDT), is a bidirectional serial/parallel high-bandwidth, low-latency computer bus. The HyperTransport Technology Consortium is in charge of promoting and developing HyperTransport technology. The technology is used by AMD and Transmeta in x86 processors, PMC-Sierra and Broadcom in MIPS... Hypertransport to a high performance I/O subsystem.
  • The microprocessor is directly connected to other CPUs through a proprietary extension running on top of two additional natively implemented HyperTransport (HT), formerly known as Lightning Data Transport (LDT), is a bidirectional serial/parallel high-bandwidth, low-latency computer bus. The HyperTransport Technology Consortium is in charge of promoting and developing HyperTransport technology. The technology is used by AMD and Transmeta in x86 processors, PMC-Sierra and Broadcom in MIPS... HyperTransport interfaces allowing support of a cache-coherent Non-Uniform Memory Access or Non-Uniform Memory Architecture (NUMA) is a computer memory architecture, used in multiprocessors, where the memory access time depends on the memory location. A processor can access its own local memory faster than non-local memory (memory which is local to another processor or shared... Non-Uniform Memory Access multi-CPU memory access protocol and This article needs cleanup. Please edit this article to conform to a higher standard of article quality. Symmetric MultiProcessing, or SMP, is a specific implementation of multiprocessing in which, typically, n-processors are connected through a bus to a large chunk of logical memory that all share through a bus... Symmetric multiprocessing.

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Product Information (765 words)
Leverages advanced architecture to provide powerful solutions for a variety of Internet edge, peripheral applications, and more.
AMD64 technology with Direct Connect Architecture enables storage customers to meet a rapidly growing and divergent market, delivering high-performing, reliable, and differentiated storage solutions.
With Direct Connect Architecture, improve overall system performance and efficiency by helping eliminate traditional bottlenecks inherent in legacy architectures.
Frequently Asked Questions: NUMA, SMP and AMDs Direct Connect Architecture (2098 words)
Processor 1 and Processor 2 are each connected to an external Northbridge memory controller hub, which in turn is connected to one large pool of memory.
With AMD's Direct Connect Architecture and NUMA, Processor 1 is connected to Memory 1, Processor 2 is connected to Memory 2, Processor 3 is connected to Memory 3, and Processor 4 is connected to Memory 4.
NUMA and the AMD Direct Connect Architecture perform the best when the memory assigned to some code is located in memory that's connected to the processor running that code.
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