List of device bandwidths

andre kesteloot andre.kesteloot at
Thu Jan 17 21:54:44 CST 2008

Michael O'Dell wrote:
> andre kesteloot wrote:
>> Could be useful:
>> André N4ICK
>> _______________________________________________
>> Tacos mailing list
>> Tacos at
> except where it's flat-out wrong (Frame relay shows 2Mbps.
> while Frame runs at bearer speeds from 56Kbps on up),
> grossly inconsistent (the number for Infiniband are
> all-over-the-map crazy), or documents a non-thing (eg, OC-9).
> \
OK, Wikipedia is meant to be modified until perfect.
Go for it
> but to give credit where due, it is a decent first attempt
> and is considerably broader in scope. usefully so, than other
> attempts i've seen to produce a similar table.
> It is interesting to note that the AGP-8 video card interface
> cedes no quarter to PCI-E when it comes to speed. the difference
> is that AGP-8 is a hump on the back of a kludge with
> very iffy "signal integrity", while PCI-E is a point-to-point link
> designed with modern small-swing signalling. The point not
> made is that PCI-E is a packet bus - meaning every transaction
> has significant overhead which AGP-8 doesn't have. But Intel
> *had* to have a counter for RapidIO, RocketIO, and HyperTransport
> and PCI-Express was it. the two Rs still exist - Freescale DSPs use
> RapidIO and some FPGAs use RocketIO signalling to drive pins
> at warp speeds. the current Opertons use HyperTransport 2
> and HT3 is on the way with much more go-fast.
> one novelty is that there are PCI-Express switch chips coming and
> folks building *active* cables which will allow PCI-E to be
> used not just between two chassis, but as a general interconnect.
> HT2 switches already exist.
> we now return you to your regularly scheduled QRM.
>     cheers,
>     -mo
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