OK thanks guys...

Yeah I understand what you're saying dinos22, I would feel the same way. These times are slow but on the setup I have I can't make them better (at those settings) no matter what tweak I try. They can be faster but those timings/clocks/volts needed are one offs and I can't test repeatedly for hours, they would be just one offs. OPB's time was at quite high timings which even I can drop lower than at same frequency with the CDT I understand but it won't even come close to that time, it would end up how you expect it to; above the time of those with higher frequencies/lower subtimings. If 500FSB was doable these RAMs could very easily run 514x7 3600 4:5 642 4-4-4-4 tRFC 39 PL5 tWTR 10 tWTP 10 at 2.35V. More volts (2.60V) would get you tRFC 29 32M stable max but I'm not risking them, have already done it once.

I noticed a problem on this setup which gives slow times. I lean strongly towards Super Pi performance being completely NB strap, motherboard and chipset based first and OS based very close by second. When I bootup at below <475FSB and <DDR2-1000 I can only get PL7 minimum. When I bootup at ~DDR2-1080-DDR2-1180 I can get PL6. When I bootup at DDR2-1200-DDR2-1290 I can get PL5. Cannot get PL5/6 at low RAM speed because PL seems to change on the BIOS value of tRFC.

So If I set a tRFC above 42 in BIOS at bootup for DDR2-900, it should give PL5... but it's not that simple for some reason.

Also 2:3 ratio is very quick for me compared to the rest.

Look at this - all BIOS values;
400 FSB DDR2-1200 4-4-4-4 PL5 tRFC 45 (all else constant)
450 FSB DDR2-1126 4-4-4-4 PL6 tRFC 40 (all else constant)
450 FSB DDR2-900 4-4-4-4 PL7 tRFC 25 (all else constant)

This sort of PL changing by BIOS values is definitely strap based but it also improves performance quite a bit.

Does tRFC make that much a difference?... we'll see.

Here, for your benefit. I did tests at lower RAM frequencies for effects of stock/small window/disabled theme/OPBCleaner/CW/CDT/tRFC/tRP/tWTP/tWTR.

Small window = when you make the SPi window small so only the bar remains while the calc runs.
Disabled Theme = when the Theme service is disabled (all else constant)

SETUP
Maxmem=520, LSC=1, that totally white theme, etc.
Pagefile 512-512 for all but 384-384 for the CW run.

3600 - 450 (1:1) - 4-4-4-4 PL7 tRFC 25 tWTP 10 tWTR 10






After that, I kept the theme running even with OPBtweak/cleaner because it slows everything down if off.

  • CDT/OPBCleaner/smallwindow/tRP2/tWTP9/tWTR9: 13m 38.578s


So you know what effect which values can have.

-Can a chipset be better on one board than another? Yup.
-Can each motherboard be a llittle more tweaked than another of the same make/model/rev? Of course, look at CPU oc, MB FSB oc and RAM oc to see this. IC's always have these differences.

I've seen people run my exact timings/clocks and get far faster. If I was a doubting Tom and couldn't understand what I posted above, I'd say "cheat! make video for me or I don't believe its possible" -> because I'd be comparing everything to my board performance, afterall we have similar CPU/OS/RAM.

To stop wasting time and pages over and over anytime someone gets a quick time, not just now, but for years to come, all we need is better verifcation and some authentic method of verifying clocks/speeds of a run rather than purely trusting others words. In a competition, this "online trust" is very easy to bypass.