The intel cards that use the EM driver are the
best performing cards in FreeBSD that we've
tested. We've test cards made by the same company
that use the broadcom controllers and the intel
cards are substantially better (ie use less CPU
passing the same amount of traffic). 

Be careful using on-board controllers. Usually
vendors, for some reason, don't wire them to the
pci-x bus. Most supermicro boards wire the em
controllers to the 32bit/33mhz bus and the tyan
and supermicro opteron boards we've tested wire
the broadcoms to a shared 1x PCI-E, both of which
will not only give you poor performance, but are
not capable of running full gigabit rates.

DT

--- YTResearch <[EMAIL PROTECTED]> wrote:

> We are running the S4882-D and it has the
> Broadcom GB dual adapter  
> built in (recognized as <Broadcom BCM5704C Dual
> Gigabit Ethernet,  
> ASIC rev. 0x2003>). It seems to work without
> problems and we've run  
> both to two different networks (right now
> running only one). We are  
> connecting at 100baseT so I don't have
> experience running at GB  
> speeds. I'm not detecting any network
> bottlenecks at all and I've  
> been watching very carefully due to stability
> problems. We are  
> running 6.0 RELEASE amd64 SMP 4/8 CPUs 8 GB.
> 
> I don't know if the 2882 is identical in
> architecture but if so,  
> strongly recommend NOT using 6.0 and trying
> 6.1. We are panicing  
> daily and experience about 4 minutes a day
> downtime. Never have had  
> FreeBSD be so unstable in 7 years.
> 
> On May 31, 2006, at 2:22 AM, Heinrich Rebehn
> wrote:
> 
> > Hi list,
> >
> > can anyone recommend a 1000BASE-SX ethernet
> adapter for PCI-X slot,  
> > that
> > is well supported by FreeBSD-amd64?.
> > I want to use it in a TYAN Thunder K8SD Pro
> (S2882-D) board.
> >
> > TIA,
> >
> > Heinrich Rebehn
> >
> > University of Bremen
> > Physics / Electrical and Electronics
> Engineering
> > - Department of Telecommunications -
> >
> > Phone : +49/421/218-4664
> > Fax   :            -3341
> >
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