the p4c800 had a socket problem, remember :)

Hmmm, i'm having some serious difficulties with my 2.8C setup. I get BSOD's all over the place when running everything at stock. I tried running UT2K3 bench 10~15 times, i managed 3 successful runs. The funny thing is: it's always on a different moment, and nor memtest nor prime95 dedect errors. : /

I'm testing piece by piece in another mobo right now, but i don't think it's a HW problem. I must have hosed my WinXP setup somehow, I can't imagine how.

The P4C system is fixed. Made the benches you asked for:

Conclusion:

Get some cheap PC3200 that can do 5-2-2 cl2 at 200mhz, instead of expensive PC4200 that does 8-4-4 CL2.5 at 250mhz!

Sorry doc, my system won't boot at CL3, so the difference will be even larger.

I told you guys :)

read the above posts, throw away that pc3700 and higher, it serves nuttin' :)
probably however dualchanel 250 @ 2 2-5-2 could gain a bit more, coz the jump from sc to dc is quite high in botmatch, but overall it's preferred to use 5:4 div if you can't run 1:1 at fast timings

thanx richyB!

differences are marginal anyway, so spending that amount of money on the ram is a lost cause

my ram doesn't even boot @ anything lower then cas 3 even with divider on and even with 3.2 volts, quite some pc3700 by corsair :)

that jump from SC -> DC is indeed pretty impressive!

that is the only confounding factor, if dualchannel cas 2.5 4-8-4 would jump the same amount, it would bring it a little bit above the dualchannel 5:4 @ cas 2 2-5-2, but it'd be a little bit :)
it's quite stunning to see that @ pc 3700 speeds, the difference between cas 2 2-5-2 @ 233 mhz and cas 2 2-5-2 @ 186 mhz (divider 5:4) has a differnce of about 1 frame / second????

Spending over 100 euro's more for 500 mb tight pc3700 compared to readily available tight pc3200 is scandalous...

SC was 256mb ram, DC 512mb. The SC <> DC results should not be compared to each other, since there was some light swapping during the benchmark which slowed down the performance.