I have the 1800+ processor, and, finding some tweaks online,
bumped my numbers from:
CAS 2.5 - 3 - 6 - 3
to
CAS 2 - 2 - 5 - 2
SiSoft Sandra's memory test gave me a result of +35% throughput.
Not bad!
I did find that setting the performance mode from NORMAL to TURBO
was a bad thing -- made it very unstable.
No other experience with overclocking.
I'd rather leave the smoke inside the chip.