PCI-E 1x network adapter

[Martin Cracauer]

> > >I'm looking for PCI-Express 1x network adapter
> > for FBSD-6
> > >I found adpaters only for PCI-X in
> > documentation,
> > >on google I didn't find much more :(...
> > >
> > >Is there any PCI-E adapter supported ?
> > >Could you recommend me any adapter, plase ?
> > >Thanks for reply.
> > >Jiri
> > 
> > We use Intel's dual ports gigabit adapters in
> > dell's servers with 
> > freebsd 6 without any problem.
> > 
> > They are supported by the "em" driver
> 
> Note that 1x PCI-E isn't fast enough to fully
> support gigabit speeds. Its about equivalent to
> running on a 32bit bus performance-wise. You need
> 4x to get full gig performance.

No.

PCI 32bit/33MHz is max 132 MB/sec.

Here's PCIe speed:

x1	5 Gbps	4 Gbps (500 MB/sec)
x4	20 Gbps	16 Gbps (2 GB/sec)
x8	40 Gbps	32 Gbps (4 GB/sec)
x16	80 Gbps	64 Gbps (8 GB/sec)

Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer at cons.org>   http://www.cons.org/cracauer/
FreeBSD - where you want to go, today.      http://www.freebsd.org/