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MColl2
Beginner
1,306 Views

About Kabylake U and dedicated MXM graphic card

 

HI everybody.

 

 

We are developing a motherboard around Kabylake U.

 

We would like to add a dedicated graphic card : MXM graphic card type A.

 

We also have one M.2 SSD and wifi module.

 

So we need 16 PCIe lanes for the GPU, 4 for the SSD and one for wifi module, equals 21 lanes.

 

 

CPU only has 12 PCIe lanes.

 

It doesn't have any DMI link, so impossible to use an external PCH.

 

The only solution we could see is to use 8 lanes for the GPU. Apparently it wouldn't affect the FPS rate (5%). Then 2 lanes for the SSD and 1 for the wifi module.

 

It makes 11 PCIe.

Another idea is using one PCIe switch from Diodes, IDT or ...

 

 

Would you have other idea for that challenge ?

 

Thank you.
Tags (1)
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5 Replies
TGrab1
New Contributor III
57 Views

If I remember correctly the z270 line and the kaby support 24pci-e lanes.

16 are dedicated to the gpu and the other 8 are to the chipset.

So you should still have 3 lanes to spare after the items you mentioned.

MColl2
Beginner
57 Views

Thanks for reply.

Sorry but you cannot use PCH z270 because you don't have any DMI bus on Kabylake U.

idata
Community Manager
57 Views

Thank you very much to TGrable for the comments above.

 

 

Hi mulfycrowh: In order to get more details about this regard, please visit our developer zone where you will find further peer assistance:

 

https://software.intel.com/en-us/forum https://software.intel.com/en-us/forum

 

 

Also, I encourage all the peers viewing this thread that if they have additional information or details about this subject, to post all their comments on this thread.

 

 

Any further questions, please let me know.

 

 

Regards,

 

Alberto R

 

MColl2
Beginner
57 Views

Many thanks for reply.

The forum you mentioned is a software forum. Where can I find a hardware forum ?

Best regards.

idata
Community Manager
57 Views

mulfycrowh: You are very welcome.

 

 

Please visit the site on the link below, in there you should be able to get hardware support:

 

https://embedded.communities.intel.com/community/en?_ga=2.182954150.1686514995.1495053843-1592053342... https://embedded.communities.intel.com/community/en?_ga=2.182954150.1686514995.1495053843-1592053342...

 

 

Any questions, please let me know.

 

 

Regards,

 

Alberto R