7 May
2010
7 May
'10
1:49 p.m.
On May 7, 2010, at 3:39 AM, Holger Veit wrote:
Generally speaking, I have to agree here. Many systems are moving
to very high-speed bit-serial buses as speed requirements increase.
Sure you take a big bandwidth hit moving from, say, 16-bit-wide SCSI
to FibreChannel or SAS for example (both of which are essentially
SCSI on a high-speed serial bus) but the bit rate has been increased
to FAR beyond what's required to negate that hit. This is being done
primarily to sidestep signal skew problems, which become very
difficult to deal with at bit rates approaching the low hundreds of MHz.
This same thing has happened to system buses, with PCIe and
HyperTransport.
-Dave
--
Dave McGuire
Port Charlotte, FL
Is the size of
the data bus irrelevant?
Yes, as it just determines overall system performance, cf the
68000/68008/68010/68020
family.