Basic Sun hardware questions

[Gen X]

1. Other than the following, what are the differences in S+ and Graphics+ IO
boards on SUNs

The Graphics+ I/O board:
- one SYSIO ASIC that provides a single SBus
- two plug-in SBus cards

The SBus+ I/O board;

- two SYSIO ASICs that provide two SBuses
- three plug-in SBus cards

2. And why it is called a "Graphics" board (I know + stands for fibre)

3. Why would anyone prefer SBus over PCI? Since the PCI bus (33 / 66 Mhz)
has a higher bandwidth compared to SBus (25 Mhz).

Thanks

[Gen X]

Ok I think I know the difference in Graphics+ and Sbus+ boards. Sorry new to
Sun!
On a Graphics+ board there is a dedicated UPA slot for graphics card and is
directly connected to the UPA bus bypassing the Sbus controller. And
everything (FC, 2 Sbus slots, Ethernet, SCSI) are all connected to a single
Sbus. Sucks. Do people use Graphics+ boards? Or just stick an Sbus frame
buffer in an empty slot on a Sbus+ board if they need it

"Gen X" <n...@email.please> wrote in message
news:YssX7.37591$eo1.4...@news20.bellglobal.com...