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Intel i945GC Northbridge with Intel Pentium Dual-Core E2220 2.40 GHz on an Intel D945GCCR motherboard (c. 2007) In a computer system, a chipset is a set of electronic components on one or more integrated circuits that manages the data flow between the processor, memory and peripherals. The chipset is usually found on the motherboard of computers.
Fujitsu (its ARM-based CPU used in top supercomputer, still also sells its SPARC-based servers) Hitachi (its own designs and ARM) Hygon Information Technology (x86-based) Loongson (MIPS-based) HiSilicon (acquired by Huawei), stopped making its ARM-based design; IBM (now only designs two architectures) Ingenic Semiconductor (MIPS-based)
One of the advantages of having the memory controller integrated on the CPU die is to reduce latency from the CPU to memory. Some northbridge chips have supported dual processors, for example Intel's 5000X memory controller used in the original Mac Pro from 2006. Another example of this kind of change is Nvidia's nForce3 for AMD K8 systems.
In older microprocessor-based systems, the CPU and some support circuitry would fit on a single CPU board, with memory and peripherals on additional boards, all plugged into the backplane. The ubiquitous S-100 bus of the 1970s is an example of this type of backplane system.
VT-d is broken or non existent on some boards until the BIOS is updated. Note that VT-d is a chipset Memory Controller Hub technology, not a processor feature, but this is complicated by later processor generations (Core i3/i5/i7) moving the MCH from the motherboard to the processor package, making only certain I series CPUs support VT-d.
Processor Clock speed (MHz) Stock onboard RAM (KB) Maximum onboard RAM (KB) FDD HDD Notes Ref(s). Personal Computer: 5150-001 August 1981: March 1983: ISA, 8-bit 5 2 Intel 8088: 4.77 16 KB 64 KB none none Diskless model; only means of data storage is through IBM Cassette BASIC [1]: 1 [2]: 167, 1050 [3] Personal Computer: 5150-003 August 1981 ...
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