backside bus - pāna la 800 Mhz
backside bus frequency ≥ frontside bus frequency (FSB)
FSB: 133 - 800 (1000) Mhz
Memory bus: 200 - 400 Mhz
AGP bus - de doua ori frecventa PCI bus
PCI bus - 33 - 133 Mhz
Frecventa unui bus e diferita de rata de transfer a datelor:
FSB - pāna la 8 sau 14 GB/s (Intel, respectiv AMD)
System bus - identic cu FSB, eventual ceva mai mic
AGPbus (8x) - > 2GB/s
ATA - 10 MB/s
High speed USB - 12 Mb/s
ISA - 5 MB/sec
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