Couldn't resist and took my home laptop with me to my work for 2 days (after all, I could leave it running Superpi while I was working, right? )

The results... well... again they speak for themselves

Platform:
  • Barebone laptop (manufactured my MTC)
  • Core Duo T2600 (2.16 Ghz), actually an ES cpu left from the Aopen 975X days
  • 2x1 Gb DDR2-667 Mhz ram (5-5-5-15 stock timings)
  • Samsung 5400rpm 120Gb HDD
  • ATI Mobility X1600
  • WinXP SP2


Stock 32M score (24/7 OS, absolutely no tweaks):
27m16.625s (you can compare on hwbot, a couple of similar 27 minute scores there as well - done on laptops obviously)

Tweaked Win score (maxmem=600, pagefile 512Mb, registry tweaks, luna silver theme, many services disabled):
26m27.953s

Copywaza run #1 (did it my usual style, copy of "cdtfile" 3x times in Superpi folder):
26m05.219s

the best CDT I managed:
25m25.250s
KTE, you were clear enough in your post how you did the CDT, and this time I followed it letter by letter . The only difference was that I was on a single HDD, not 2 identical as you were.
(this was also the moment I thought I've finally managed to get that CDT secret working, a 40sec improvement over copywaza )

...until...

Today, I did several copywaza runs again (first, hipros style, which turned out to be a bad one, then I rebooted and tried my usual stuff a couple of times).
And guess what, this time I did:
25m25.390s

Several conclusions from it all:
  • again, basically no difference for me between my CW and CDT
  • the patterns observed in available memory and system cache were the same as in KTE's runs, that is, CW could get them better balanced in numbers (on that last run: 442/445 Mb) while CDT not so good (~430/441 Mb)
  • if I start 32M, then close it on any loop (3rd, 4th or 6th)and do either CDT or copywaza, my next full 32M run always turns out to be very bad.
  • I had a Superpi folder on both my HDD partitions, and one time while testing CDT accidentally run Superpi not from C:\, but from D:\. And it didn't make any notable difference just around 0.1 seconds.
  • CDT usually makes the first 2 or 3 loops faster than copywaza but later copywaza catches it up, in my case at least (I observed this on my C2D 3600Mhz system as well).