More P5B secrets uncovered

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10-03-2006, 10:38 AM
jmax_oc

Quote:

Originally Posted by sierra_bound

I wanted to share my results which confirm what others are seeing.

Screen #1 - booted into Windows at 400FSB, then used SetFSB to move a little higher

Screen #2 - booted in Windows at 503FSB

http://img137.imageshack.us/img137/5303/32m4026uw3.jpg

http://img80.imageshack.us/img80/6541/32m503x8zw0.jpg

More than 30 seconds difference. 503X8 may look more impressive. But looks can be deceiving. This is one reason why I prefer to run with lower FSB and a tighter strap. By using 4:5 ratio, I get a boost from higher memory speed.

When I stay on the tighter strap, the P5B Dlx is just as fast as any 975X board, IMO.

Now of course, higher CPU speed will eventually compensate for higher latencies. But once you move to a looser strap, you are fighting an uphill battle.

Ok you showed that FSB 400MHz 1066 Strap in better than 500MHz 1333 Strap.

Is it possible to make a 9x447MHz = 4030Mhz RAM 1:1 447MHz 4-4-3-8 on 1066 STRAp (boot from 400 and setfsb to reach 447)
It would be interesting to see if it's better to get high FSB or high memory freq for 32m
10-03-2006, 10:50 AM
sierra_bound

Yes, I think it is possible. I will try tonight. I have to go to work soon.

Everyone wants to run 500+ FSB, which of course is fun. But in many cases, you are better off running lower FSB and using the tighter strap.

Performance is not just about CPU speed. Latencies also play an important role.
10-03-2006, 10:57 AM
jmax_oc

Thank you
10-03-2006, 11:11 AM
bachus_anonym

Quote:

Originally Posted by jmax_oc

Is it possible to make a 9x447MHz = 4030Mhz RAM 1:1 447MHz 4-4-3-8 on 1066 STRAp (boot from 400 and setfsb to reach 447)
It would be interesting to see if it's better to get high FSB or high memory freq for 32m

Just look few posts above ;) The Stilt has reached over 500MHz FSB, with 1.92vmch and NB cooled with icy water. Then, I can at this moment (on stock heatpipe cooler) run pifast @ 474MHz and SPi32M @ 468 with 1.76vmch. On top of that, I've already seen two other people get 46ish with stock mobo. Thing is, at this point you're pretty much limited to 1:1 ratio, as 4:5 ratio craps out as soon as you clockgen up to 410-420 area... From what I have tried so far, nothing helps to fix that :(

There is a difference between 534x8 (straight boot @ 534) and 474x9 (booted @ 400). In pifast, e.g. I can see 0.40s. As far as SuperPi 32M goes below post shows it all :)

http://www.xtremesystems.org/forums/...5&postcount=48

With this method, as sierra mentioned somewhere already, P5B Deluxe is as fast in Pi as any 975x mobo, including P5W64 WS Pro
10-03-2006, 11:31 AM
sierra_bound

I wanted to add one more thing before I head out the door. Obviously it's easier to run lower FSB with a CPU with higher multipliers like the E6700 or the X6800. 400X7 may not satisfy those who have an E6300. But you can always use Clockgen or SetFSB to go higher after entering Windows. I run 32M a lot and know what works best. The important thing to always remember is that the strap is set before entering Windows. People always wonder why the PSU shuts off temporarily. That's when the board is adjusting the strap.
10-03-2006, 12:43 PM
Revv23

Quote:

Originally Posted by bachus_anonym

Yep, this is correct :)

I tried it after I did vdimm & vmch mods. With up to 1.67vmch I managed to "clockgen" from 400x9 to 468x9 and run pifast as well. Result? Full 0.50s difference, compared to straight boot @ 468x9 :fact: After that, I kind of stopped investigating it further, but I might try again, with more vmch. But yes, it is confirmed, just a matter of how high you manage to go. Just a note, this is no-go at any other ratio than 1:1 :(

even with 0609 bios?

I got some good 4:5 results with the 0609 that werent possible on the others, but i never messed with the strap... I get a new cpu probably on friday, so ill try it out then.
10-03-2006, 12:48 PM
bachus_anonym

Quote:

Originally Posted by Revv23

even with 0609 bios?

I got some good 4:5 results with the 0609 that werent possible on the others, but i never messed with the strap... I get a new cpu probably on friday, so ill try it out then.

Yes, but it only applies to the case when you boot @ 400x9 and clockgen up from there, which appears to be the way to stay on a 1066 strap. Then again, I think you have to boot at default, x9 multiplier. Once you lower it to x8, the effect is as If you're booting at loose NB timimngs, again (that would agree with this suspicion that NBCC raises at lower multi, therefore loosening NB timmings, I guess). I can boot at 430x9 4:5 and it was stable, last time I tried, so that indicates you're already booting at some different NB timmings or a new strap.
10-03-2006, 12:58 PM
Revv23

Quote:

Originally Posted by bachus_anonym

Yes, but it only applies to the case when you boot @ 400x9 and clockgen up from there, which appears to be the way to stay on a 1066 strap. Then again, I think you have to boot at default, x9 multiplier. Once you lower it to x8, the effect is as If you're booting at loose NB timimngs, again (that would agree with this suspicion that NBCC raises at lower multi, therefore loosening NB timmings, I guess). I can boot at 430x9 4:5 and it was stable, last time I tried, so that indicates you're already booting at some different NB timmings or a new strap.

Hmm well ill be getting an e6400 so ill be starting out at 8x and hopefully i will be able to hit 400. My ideal setup would be 450-475x8 in 4:5... but with a boot at 400 so as to have the 1066 strap. Higher NB volts (1.8+) helped me alot with 4:5 so maybe it just takes more to do 4:5 at 1066...

I hope hipro releases his AW9D mods soon i feel like there is more we can do with this mobo and we just dont know where to look.
10-03-2006, 01:29 PM
Ace-a-Rue

to do 450 FSB and use 4:5 ratio means your memory is going to run at 562 mhz...can it do that?

EDIT:...are you going to boot into windows at 400 FSB and then raise your FSB to 450?
10-03-2006, 02:40 PM
Viss

Cannot go higher on def multi because of crap air for now. Only 1:1 as mentioned, 4:5 hangs while set with clockgen.

9x400 CG to 423
http://img.photobucket.com/albums/v6...M400-422CG.jpg

9x423 bios
http://img.photobucket.com/albums/v6..._oc/32M423.jpg
10-03-2006, 02:59 PM
boostedevo

What I'd like to know is why retail C2Ds get/can still hold tighter NB timings >500FSB. I have a B1 ES.

Boot at 495+CG to 501:
http://i10.photobucket.com/albums/a1...M_12m10453.png

Boot at 400+CD to 490:
http://i10.photobucket.com/albums/a1...2m_1139703.png

I can't quite get this strap to hold at 500FSB (even at 8x), but it would be somewhere in the 11m20s range if it did (from what I can tell of the iterations that finished). My real peeve is that retail procs seem to be able to keep tight chipset timings pretty much up to 550FSB even with a straight boot (Epox).

So does anyone know definitively if this an issue between ES vs. retail or am I missing something in plain sight? Any pointers sure would appreciated. My board does 580FSB and the proc does >5GHz on DI and it's embarrasing to barely be able to run times of retail procs with 200-300MHz less clocks when I go over 500FSB. Thoughts?
10-03-2006, 05:57 PM
Ace-a-Rue

i can tell that i have a retail E6700 and i cannot get over 400 FSB at 9x (default is 10x) on a P5WDG2 WS pro...i am not a happy camper.
10-03-2006, 06:00 PM
bachus_anonym

@boostedevo,

Man, I'm already impressed enough with The Stilt hitting 510MHz (clockgen'ing up from 400) and your 490Mhz, so don't complain man :lol: At this moment, all I can do 32M-stable is 470Mhz and that's already with 1.76vmch. Although, I'm still on a stock heatpipe, so that doesn't help at all...

As to ES vs Retail, I have no idea. But I have a feeling that even Retail chips won't hit stable 540-550MHz raised from 400x9. At least we now know, that 534x9 straight from BIOS can bring us, E6600 benchers, below 11m.

Your 502x9 on E6600 ES is kind of slow, though, even for straight boot... I have done 496x9 and it gets me 11:44.
10-03-2006, 07:08 PM
boostedevo

Thanks for the reply B_A. You have messed with it so much, I was hoping you came across something ;) Yeah, my SPi's have been hideously slow forever. Best I ever had on that strap was 12:07 and I still don't know how I ran it...that 12:10 was as close as I could get again, LOL. It's certainly not for lack of CPU clocks or mem clocks/timings...they are about as high/tight as anyone out there.

9x400->490 is way fast for me compared to what I was getting. 9x493 got me a 11:32 today and I am working on 495 now. I think 32M @ 500FSB this way would take a miracle, but would be in the 11:2x area for sure. I just wish I knew why Epox and others can straight boot ~540FSB with fast NBs and anything over ~405FSB for me is so loose my SPi times are miles behind people with lower clocks. If you think of anything, I am all ears :)
10-03-2006, 11:44 PM
sierra_bound

Quote:

Originally Posted by jmax_oc

Is it possible to make a 9x447MHz = 4030Mhz RAM 1:1 447MHz 4-4-3-8 on 1066 STRAp (boot from 400 and setfsb to reach 447)
It would be interesting to see if it's better to get high FSB or high memory freq for 32m

I decided to run 447X9 1:1 @ 3-4-3 since my RAM can handle it.

Screen #1 - boot into Windows at 447X9

Screen #2 - boot into Windows at 400X9, then use SetFSB to raise FSB to around 447

http://img98.imageshack.us/img98/5390/32m447x9eg9.jpg

http://img98.imageshack.us/img98/883...9setfsbxx9.jpg

As you can see, almost a 30 second difference. The fastest combination was 402X10 4:5 because of higher memory speed. So high FSB does not always give the best results.
10-04-2006, 12:53 AM
jmax_oc

Thank you very much
10-04-2006, 01:14 AM
Blacklash

Quote:

Originally Posted by sierra_bound

I wanted to share my results which confirm what others are seeing.

More than 30 seconds difference. 503X8 may look more impressive. But looks can be deceiving. This is one reason why I prefer to run with lower FSB and a tighter strap. By using 4:5 ratio, I get a boost from higher memory speed.

When I stay on the tighter strap, the P5B Dlx is just as fast as any 975X board, IMO.

Now of course, higher CPU speed will eventually compensate for higher latencies. But once you move to a looser strap, you are fighting an uphill battle.

Definitely agree with this and my recent buying decisions reflect it.
10-04-2006, 02:34 AM
FELIX

Here is an enhanced version of memtweak (binary work):

MchbarEdit.zip

but it's seem that it's difficult to find which register is imply...

Good luck. :)
10-04-2006, 08:56 AM
Revv23

ok just got a new CPU and an MCX159

My NB is idle at 22c lol, this thing rocks. Ill see how far i can get on 1066.

I try you program felix, it is way to hard for me to figure out, maybe i will take some screens of pre 400 and post 400 and i could figure something out.
10-04-2006, 09:13 AM
bing

Quote:

Originally Posted by FELIX

Here is an enhanced version of memtweak (binary work):

MchbarEdit.zip

but it's seem that it's difficult to find which register is imply...

Good luck. :)

Felix,

Is it possible to add "small" feature on that cool memtweak that allow it to save the reading result to a file ? Probably to text file will be the best for us to hunt down the different ?
10-04-2006, 11:40 AM
FELIX

...it's possible and I add it in a next version,but you can also use cpu-z
to do that (cpu-z->last table->register.txt),the mchbar is include in the text.
10-04-2006, 09:51 PM
Dax5

hey! where can i get the latest version of Setfsb for P5b?

thanks!
10-04-2006, 11:46 PM
Pt1t

Quote:

Originally Posted by Dax5

hey! where can i get the latest version of Setfsb for P5b?

thanks!

there : http://www13.plala.or.jp/setfsb/down..._P5Bdeluxe.zip

but Just type setfsb in google :rolleyes:
10-05-2006, 05:52 AM
NO1B4ME

Quote:

Originally Posted by Pt1t

there : http://www13.plala.or.jp/setfsb/down..._P5Bdeluxe.zip

but Just type setfsb in google :rolleyes:

Thanks i was looking for this too.
10-05-2006, 12:12 PM
dr_sharp

Has anyone tried both SetFSB and ClockGen? Similar results? One better than the other?

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