system bus


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Related to system bus: Address bus, Control bus, Data bus

system bus

(1) The primary pathway between the CPU and memory. The speed is derived from the number of parallel channels (16 bit, 32 bit, etc.) and clock speed. Also known as a "frontside bus," it is faster than the peripheral bus (PCI, ISA, etc.), but slower than the backside bus. See peripheral bus, backside bus and Northbridge.

(2) The primary pathway between the CPU and peripherals. See peripheral bus.
References in periodicals archive ?
5") board supports one Intel Pentium D Processor featuring two processing cores with a 1066/800/533 MHz system bus, 4GB unbuffered DDR2-667/533/400 SDRAM, a user Over-Clock feature in the system BIOS, PCI-Express 1x16/2x1, 4 32-bit PCI, 4 SATA ports (3 Gbps), 8 USB 2.
Both support Hyper-Threading Technology and an 800MHz system bus and are designed to improve productivity as well as provide enhanced digital media, gaming and broadband user experiences.
The new Pentium 4 processor runs at 3GHz but features an 800MHz system bus instead of the 533MHz one that is present in previous releases.
As expected, the Pentium 4 chip supports a 400 MHz system bus, surpassing--for the moment, anyway--the AMD Athlon bus speed.
Its Pentium III Coppermine chips will run at up to 700MHz and will support a 133MHz system bus.
06GHz model comes with a 512KB level two cache and a 533MHz system bus while the 3GHz version has 512KB and a 400MHz system bus.
Intel chips with a 133MHz system bus will appear in systems from Dell, HP, and IBM.