Confused over AMD PR rating

I have a XP1900 which I believe runs at 1.6Ghz, I have now also a XP2400 which runs at 2.0Ghz.
Am I right in assuming the 2400 is a worthy upgrade to the 1900 and the Palomino/Throughbred issue is confusing also.

Which chip is which. I know the XP2400 has a 256K L2 but not sure about the XP1900.

Apologies for ignorance.

Upgrading to the 2400+ will depend on the price and how much cash you have
on hand.

To calculate your gain in performance divide the old processor clockrate by
the new processor and then multiply it by an average job time. For example,
if you have jobs that run in 60 s, the upgrade chip will take 48 s, and you
will save your self 12 s. You then can figure out if the 12 s, you saved is
worth the extra cost.

Of course, everything never scales so simply. This simple formula is
optimistic and you may not do as well with time-savings.

Someone told me once that money isn't important, it is the lack of money
that matters.

Pete


wrote in message
...
I have a XP1900 which I believe runs at 1.6Ghz, I have now also a XP2400
which runs at 2.0Ghz.
Am I right in assuming the 2400 is a worthy upgrade to the 1900 and the
Palomino/Throughbred issue is confusing also.

Which chip is which. I know the XP2400 has a 256K L2 but not sure about
the XP1900.

Apologies for ignorance.