Sub 4 GHz Pi Thread

[Gautam]

I know we had a 3 GHz version for A64's, surprised we don't have one of these already. Only rule is stay below 4 GHz.

Edit: Took the liberty of making a list tabulating the top 10 results, along with memory speeds/timings and chipset.

6MB L2 Cache/Core
1. Rol-co..........11.234.......X38........680MHz 5-5-5-8
2. JMKS............11.266.......P35........600MHz 4-4-4-4

4MB L2 Cache/Core
1. Diegis0n........12.453.......X38........710MHz 5-5-5-5
2. Misko...........12.484.......P35........600MHz 4-4-4-4
3. 3oh6............12.500.......P35........913MHz 7-6-5-16
3. Gautam..........12.500.......i965.......600MHz 4-4-4-4
3. Spacemaster.....12.500.......P35........888MHz 7-6-5-17
4. aasmaukr........12.515.......P35........625MHz 5-5-4-5
4. coop............12.515.......P35........625MHz 5-4-4-4
5. MidnightMadness.12.516.......i965.......553MHz 4-4-4-4
6. G H Z...........12.516.......i965.......600MHz 4-4-3-4
6. Rol-co..........12.516.......i965.......600MHz 4-4-3-5
6. dinos22.........12.516.......i965.......600MHz 4-4-4-4
7. learn...........12.516.......p35........571MHz 4-4-4-4
7. monteboy........12.516.......P35........600MHz 4-4-4-4
8. andre x_x.......12.531.......i965.......444MHz 4-4-4-5
8. Oldscarface.....12.531.......i965.......666MHz 5-5-4-10
9. Yotomeczek......12.531.......i965.......500MHz 4-4-4-4
9. luihed..........12.531.......i965.......500MHz 4-4-4-12
10.eva2000.........12.531.......i965.......600MHz 5-5-4-5

[kiwi]

Would be good to mention your chipset

Here is p5b dlx but asus needs to fix that 444 > 333 timing glitch and 4:5 problem. Otherwise sub 12.6 is not so easy unless your RAM can do 650+

[Supertim0r]

click here

[Gautam]

Looks good bro, but the rule is staying below 4 GHz.

i975X here, P5W DH.

[VictorWang]

on AW9D-Max

3997mhz = 12.610

[Gautam]

If sub 12.6 is what you're looking for, sure. Sub 12.5 is what will be interesting though...need one of the guys that can pull off 400x10 2:3 CL4. How about it Victor?

[before]

hehe nice times Gautam bro Theme is good, isn't it? We need to find an ad hoc scheme; we may find something better by customizing it.

So; I'll post my times later

[Viss]

[patrickadizzle]

[funkflix]

Here with my B1 on P5B.

[dinos22]

p5b doesn' t like too tight a timings in case some of you guys didn't realise so back off a little on them great times too

when will Anus fix 4:5 divider

[Revv23]

p5b doesn' t like too tight a timings in case some of you guys didn't realise so back off a little on them great times too

when will Anus fix 4:5 divider

what do you mean? 4:5 works just fine. certainly you clock higher in other dividers but latencies are best with 4:5, and thats all that matters really.

[dinos22]

what do you mean? 4:5 works just fine. certainly you clock higher in other dividers but latencies are best with 4:5, and thats all that matters really.

problem is that the RAM just doesn't reach nowhere near the other dividers.............i'd like them to loosen it up if necessary just to close that gap a little in clocks as 965 chipset doesn't like CAS3 or tighter timings in general

[G H Z]

Woops I guess I didn't tie you Gautam

[kiwi]

what do you mean? 4:5 works just fine. certainly you clock higher in other dividers but latencies are best with 4:5, and thats all that matters really.

There are very, very few p5b dlx boards that work 4:5 and > 500Mhz

[Viss]

Stock P5B dlx.

Mem:


FSB:


However at same voltages max i reach with 4/5 is 453FSB.

[dinos22]

you're lucky your board/RAM can do that...........

my RAM does 543MHz on 1:2 divider and around 480 on 4:5

[Gautam]

Woops I guess I didn't tie you Gautam

Heh, I was getting nervous for a bit. Still very strong for CAS 4...but you got the 1T on your side. I'm quite impressed, I always thought the 590 was far inferior to the i975 clock for clock, but you're very close if not ahead at the same timings, not to mention no one on the 965 side has caught you yet.

About the 4:5, I personally believe that it is a SPD-related issue. Asus fixed the 4:5 in one of the later BIOSes on the P5W DH. They probably slackened some timing up that's already loose on higher speed (6400, 8000+) If we knew what it was, it could probably be done on the P5B as well.

Nice stuff loc.o. How do things work out at CAS 4 and 4:5?

[Viss]

Nice stuff loc.o. How do things work out at CAS 4 and 4:5?

Thank you. Cas 4 makes it worse. Memory can do 570 4-4-4-10 but with 4/5 even 450/562 wil make system reboot.

[shogo_ca]

Cpu is jumping from 3999 to 4010 so you could say it counts..
Its on air cooling


Mine seems a bit slow compared to yours, tried 4-3-3-4 at 2.35vdimm but didnt boot. maybe 2.5vdimm but seems a bit scary for me...

[zakelwe]

Here's my effort.



Regards

Andy

[G H Z]

Nice timings Andy, 9X working maybe?

[Norz]

....and some slow allendale action..lol...
I really suc## in this

E6300@3795 Crucial 10th Anniversary PC5300@2,25v
EDIT: norz aka nassuz(diskusjon.no)

[Gautam]

Still very nice speed for a 6300.

So, Andy, just how deep into 2D are ya willing to get?

[zakelwe]

Nice timings Andy, 9X working maybe?

Not at 444 that's for sure. Maybe 3-4-3-8 might, will have to try it tonight but I think it will be slower. Will also read the tweaks thread for the first time ever

So, Andy, just how deep into 2D are ya willing to get?

Not too deep, even during those runs I was thinking about lobby hi However I do like a challenge, the runs are over quick and it is nice to not worry about the video cards for once. Should be some payback in 2001 as well.

I seem to be very close, 0.1s, however I get the feeling that might be a big gap in SuperPi when cpu capped, I am not experienced enough to tell.

Regards
Andy