Can a PCI-E X2 width link be supported by X550-AT2?

[晓齐]

Hi，all！

We're planning a product with a 10 GBE Interface.

We want to use X550-AT2 as the controller.

The CPU in the system is a Q-Seven module.

The link between X550-AT2 and CPU is PCI-E Gen3。

In the datasheet of X550, the PCI-E width is described as x1, x4 or x8。But in our system, we can only use a x2 width。

I wonder whether the x2 width can be supported by X550-AT2? Or it can only be recognized as a x1 width?

thanks sincerely.

[idata]

Hi,

Thank you for posting in Wired Ethernet Communities.Based on page 2 of the X550 datasheet ( https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/ethernet-x550-datasheet.pdf), it mentioned "Removed x2 lane width".Let me double check and update this thread as soon as possible.Regards,Vince T.Intel Customer SupportAgent under contract to Intel

[晓齐]

Hi,

Thanks a lot for your reply. I did miss the information in the Revision History.

In my understanding, now the question is, whether "Removed x2 lane width" means just fixing an error in the datasheet or adjusting the function of the chip?

I'm looking forward to your updating. Thanks again.

[idata]

Hi,

After further verification, the X550-AT2 does not support x2 lane width. If your slot support PCIe 3.0 x1 lane width, the X550-AT2 will work on x1 but will not get 10Gb performance.Regards,Vince T.Intel Customer SupportAgent under contract to Intel

[晓齐]

Hi,

Thanks a lot for your help. I think the bandwidth of x1 is enough for our current design. In our next design, we'll select another platform to support x4 width or more.

Thank you sincerely!