RFC on hardware to be bought (FSC Primergy?)

[Sascha Schnitzler <sascha_(_at_)_apsu_(_dot_)_de>]

Hi folks,

our long time running obsd-fw has to be replaced by a new one.
The hardware in focus is a FSC Primergy Economy 50 
(http://www.fujitsu-siemens.co.uk/sme/products/intel_servers/economy/primergy_econel_50.html)
 - maybe someone has expierences with this HW and can mail me the 
results of getting obsd running on that box (other experiences with FSC 
hardware are welcome to)

question is: onboard LAN is a BCM5751, the obsd-site tells me that it 
supports BCM570x, not a word about the 5751. Anyone got that chip 
running? how about it's performance? does it scale well?
since the system will be a firewall, i need two extra nics. any 
recommendation? 3com? intel? i need the fw (will be a transparent bridge 
 with one managment interface to be precise) to handle >1.000 
connections at a time..

thanks in advance,
sascha