At 07:12 31-10-2006, Diana Eichert wrote:
On Tue, 31 Oct 2006, Tom Cosgrove wrote:
> Although they're not yet available, Wim is hoping to sell
> http://www.liantec.com/product/emboard/EMB-5740.htm soon.
>
> See http://www.kd85.com/liantec.html.
>
> Thanks
>
> Tom
look like a more interesting choice than the commell I'm looking at,
http://www.commell.com.tw/Product/SBC/LV-669.HTM
diana
The problem or unfortunate feature of both of these is that the only path
between the NICs and memory is a single shared PCI. The chipset specs say
nothing about it other than it is PCI, implying it is 32-bit / 33 Mhz. In
other words, the 2 or 4 gigabit NICs share a roughly 100Mbyte/sec path to
memory, perhaps slightly more. A single NIC running half-duplex can
saturate the available IO to memory bandwidth.
Admittedly the price of gigabit NICs has come down to where I'd rather see
them than 100mbit NICs. They have advantages even if unable to run at full
speed. But running multiple gigabit links full speed, these boards
won't. Sigh.
Ed Gardner
