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Altera_Forum's avatar
Altera_Forum
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15 years ago

Question about PCIe speed

I have been working on the chaining DMA example project for PCIe provided by Altera. I am a bit confused about what performance I should expect though. When sending 16.384 GBytes of data f...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Since I am using 4 lanes I should expect a speed of 16Gbps, is this correct?

This is twice what I have...

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PCIe DMA performance is restricted by both, PCIe and PC memory throughput. You seem to assume, that PC memory speed won't play a role, very unrealistic in my opinion.