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Altera_Forum's avatar
Altera_Forum
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8 years ago

Difference between 128 bit 250 MHz and 256 bit 125 MHz

Hi, I have a PCIe in Gen3 x4 mode configured as a root port. I have 2 options for Gen3 x4. 128 bit 250 MHz or 256 bit 125 MHz. What is the difference between the two? I have looked into ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

This should be more a question of what do you need. Faster clock will be harder to place and route, but the wide bus will likely need more resources in your processing pipeline.