Date: Thu, 1 Feb 2018 20:16:02 -0800 From: C Gray <frankfenderbender@council124.org> To: freebsd-questions@freebsd.org Subject: anyone use different PCI Express card & slot #s? Message-ID: <AC2031C8-332D-48CB-A442-0225B872790A@council124.org> In-Reply-To: <69060D2E-8ED1-4BDB-8801-2BA29F15C632@council124.org> References: <8F08E935-33A8-4B5F-9057-51FAD51DA97D@council124.org> <20180201121251.95e345cf.freebsd@edvax.de> <09DEB81A-3DC1-4147-9249-0497C89F429B@council124.org> <69060D2E-8ED1-4BDB-8801-2BA29F15C632@council124.org>
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While [re]searching PIC-X, PCIe x{1,4,8.16} internal slots and cards, I =
came across this=20
interesting usage suggested by a bright ICT author:
"...
A little-known fact is that you can install any PCI Express =
expansion card in any=20
PCI Express slot.=20
For example, you can install an x1 expansion card in any kind of =
PCI Express slot;=20
it doesn=92t need to be installed in an x1 slot.=20
So, if you have an x4 expansion card but your motherboard =
doesn=92t have an=20
x4 PCI Express slot, no problem; simply install it in an x8 or =
x16 slot.
The same holds true for =93bigger=94 cards. For example, you can =
install an x16=20
video card in a =93smaller=94 slot. (The slot, however, must =
have its rear side open;=20
otherwise, the bigger expansion card won=92t fit. It is up to =
the motherboard manufacturer=20
whether or not to provide slots with their rear side open.) The =
only disadvantage is=20
that it will only have the maximum bandwidth provided by the =
slot; i.e., if you install=20
an x16 video card in an x4 slot, it will have only x4 bandwidth =
available.
..."
-- from "Everything You Need to Know About the PCI Express" - by =
Gabriel Torres (July 12, 2012)
=
http://hardwaresecrets.com/everything-you-need-to-know-about-the-pci-expre=
ss/4/
Has anyone tried an x1 expansion (sound) card, esp. manufactured by =
Creative Labs,=20
in either an x4 or x8 slot?
I'd like to know how it has worked out for you, and how it has affected =
your system's other slots?
Thanks,
C Gray
frankfenderbender@council124.org
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