PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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MBps vs. Gbps??<br />
n<br />
Comparing data rate exchange capabilities between<br />
parallel based and serial based technologies is<br />
difficult<br />
l<br />
l<br />
l<br />
l<br />
Parallel – usually expressed in M (10 6 ) or G (10 9 ) bytes per<br />
second<br />
Serial – usually expressed in the same terms only in bits per<br />
second<br />
Examples<br />
– Which technology transfers data faster<br />
• 66 MHz 32-bit PCI bus or <strong>PCIe</strong> over a 4x link or a 1 Gbps Ethernet<br />
link??<br />
– Is a parallel bus better for multi-media applications<br />
or for data base type applications??<br />
Analysis is difficult<br />
– Must account for wait states, latency, delay, bus or link utilization,<br />
arbitration scheme, protocol overhead (present in parallel and<br />
serial based systems)<br />
Copyright by Dashcourses, Inc. 2009<br />
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