I am designing a scratch build and am going to be using a riser card for the GPU, but the case I am designing is extremely unforgiving of errors in measurements.
A watercooling fitting will be directly above the PCI-e slot so I need to know how much room for error I have.

The board is the Gigabyte GA-B150N WiFi, if that makes any notable difference?

  • 2
    Have you.. looked at the specs? Apr 22, 2016 at 15:18
  • Yes, all over the place. I can't find anything. I have been searching for an answer for the last hour. I have no modern motherboards accessible to me otherwise I'd measure one. I imagine that they're standardised. Apr 22, 2016 at 15:20
  • I don't understand the downvote/vote to close. I think it's a perfectly legitimate question. Unless i'm missing something blindingly obvious? Please elaborate. Apr 22, 2016 at 15:21
  • Are you looking for the height of the PCIe connector socket itself? Apr 22, 2016 at 15:22
  • Yes, @Ƭᴇcʜιᴇ007 Apr 22, 2016 at 15:22

1 Answer 1


According to the spec sheet for a Molex PCIe connector, the rise from the mounting surface to the top of the socket is 11.25mm (max.).

enter image description here

Feel free to look up other makes/variations to compare, but it should be standard.

Even better: buy the board you plan on using, and measure the socket height with a caliper. ;)

  • Thank you very much. I am buying the board next month but I was at a point in my design where I couldn't progress without this info. Thanks again. Apr 22, 2016 at 15:31
  • Its the case that limits the height not the board.
    – Moab
    Apr 22, 2016 at 16:14

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