P5B Deluxe: BIOS screens for maximum overclocking success

[qgshadow]

I don't mean to spam or anything, but this is simply too huge of news and I figured I'd try to spread the word as fast as possible. I noticed something interesting yesterday. When I had misc. voltages bumped up beyond stock (vmch at 1.6v for example), I noticed that even without a fan connected to the cpu header, I'd get an rpm reading of 42. I figured this must have meant there's a lot of electrical noise in the motherboard. Also, I noticed I wasn't able to pass beyond 460fsb stably, and at 460fsb, I could use all stock voltages.

So that got me to thinking about what spread spectrum did. I've always been told to turn it off and always have. But after thinking about it, I decided to turn it on and try fsb500 with all voltages at stock. Holy mother ing . It posted. I reset it several times (at 460fsb, it'd randomly not post when I had spread spectrum disabled) and it came one each and every time. I'm running memtest #5 and it's passed 4 iterations already. This is simply unbelievable.

My p5b (vanilla mind you) which has never seen beyond 460fsb despite misc. voltage bumps is now sailing at 500fsb with stock voltages across the board.

amazing i'll try this

[cuke2u]

Hi,
Taken from here http://www.adriansrojakpot.com/Speed..._Guide_02d.htm

Spread Spectrum

Options : Enabled, Disabled, 0.25%, 0.5%, Smart Clock

When the motherboard's clock generator pulses, the extreme values (spikes) of the pulses creates EMI (Electromagnetic Interference). The Spead Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves. It does so by varying the frequency so that it doesn't use any particular frequency for more than a moment. This reduces interference problems with other electronics in the area.

However, while enabling Spread Spectrum decreases EMI, system stability and performance may be slightly compromised. This may be especially true with timing-critical devices like clock-sensitive SCSI devices.

Some BIOSes offer a Smart Clock option. Instead of modulating the frequency of the pulses over time, Smart Clock turns off the AGP, PCI and SDRAM clock signals when not in use. Thus, EMI can be reduced without compromising system stability. As a bonus, using Smart Clock can also help reduce power consumption.

If you do not have any EMI problem, leave the setting at Disabled for optimal system stability and performance. But if you are plagued by EMI, use the Smart Clock setting if possible and settle for Enabled or one of the two other values if Smart Clock is not available. The percentage values denote the amount of jitter (variation) that the BIOS performs on the clock frequency. So, a lower value (0.25%) is comparatively better for system stability while a higher value (0.5%) is better for EMI reduction.

Remember to disable Spread Spectrum if you are overclocking because even a 0.25% jitter can introduce a temporary boost in clockspeed of 25MHz (with a 1GHz CPU) which may just cause your overclocked processor to lock up. Or at least use the Smart Clock setting as that doesn't involve any modulation of the frequency.

ChrisC

[ziddey]

Thanks for that. I read that just yesterday, but couldn't remember where I saw it to be about to quote it.

That makes complete sense. It would explain why my setting of 7x500=3500 has been giving me speeds that, while for the most time are right around 500fsb, I get occasional dips down to ~480 or as high as ~520, causing clockspeed to go between 3360 and 3640.

That said, it did do something about my EMI problem. cpu fan no longer registers rpm's when nothing is plugged in. And squeal from the motherboard seems to be less offensive, with noises mainly coming from the psu now (note that this psu is stable, just squeals. I've tested 2 others with the same result in terms of clocking).

Also, background noise in the onboard sound seems to be a lot less as well.

edit: it's too bad aisuite appears to be the only program that can detect true fsb speeds. cpuz and all others report anywhere from 499.9 to 500.1.

[cuke2u]

Hi, I get a big variation in core speed and FSB when using CPU-Z 139, but none when I use 138...
BTW anyone having issues logging into this forum, I'm having to try at least six times before I eventually get in...
ChrisC

[ziddey]

you sure youre getting variation in both core speed and fsb? are you sure it's not core speed and multiplier?

[cuke2u]

Hi, sorry, my bad. I meant core speed and multiplier. Version 1.39 is showing 2010.0 and x6, whereas 1.38 shows 3014.9 and x9, which is correct...
ChrisC

[Jodiuh]

...I get occasional dips down to ~480 or as high as ~520, causing clockspeed to go between 3360 and 3640...And squeal from the motherboard seems to be less offensive, with noises mainly coming from the psu now...

Wow, I can't believe it varies that much. I'm on the edge w/ my oc and that may cause crashed during a game or encode. There's something to be said for silencing a loud mobo tho. That has to be the most evil sound to work around. What psu do you have? I got some major squealing after connecting a Seasonic S12 Plus to a Commando, but am not sure if the board caused the psu to shout or vice versa.

[ziddey]

I'm using an enhance 500w (same as silverstones). The psu itself squeals a whole hell of a lot, although power delivery is fine. It's driving me crazy enough to rma it and pay the cost to ship it.

I do have an ultra vpower 500w that isn't as good but is actually surprisingly reliable in my latest one that I got. It doesn't squeal, and makes it easier to hear the squealing from the motherboard itself.

It looks like my spread spectrum days are over though. I was going for a 24hour+ orthos stability at 7x500. At 26 hours, the system hard locked up. I hit the reset and nothing. Cut power to psu, wait for it to discharge, and try again. It posts 500 but is extremely flaky. And it got worse and worse. It wouldn't work at 500fsb half the time. When I tried disabling spread spectrum, it stopped posting completely when I tried 500fsb. I'm not sure what happened, but it looks like it gave me short termed stability at 500fsb with SS, but now I'm more or less back to where I was before. Guess it's just a weak p5b vanilla.

[Jodiuh]

Sell it off for a nice DFI Infinity in a few days. I'll be RMAing my fake P5B to newegg as soon as it's released. FWIW, the NEO HE 550 doesn't make a sound and stays very cool. Outpost normally does a $50AR deal on it from time to time. A friend of mine actually ran dual 8800GTX on his.

[jcniest5]

Anybody's got Rev. 1.10G (C2) of this board? Tell me where you got yours cuz I want one, too.

[ziddey]

Sell it off for a nice DFI Infinity in a few days. I'll be RMAing my fake P5B to newegg as soon as it's released. FWIW, the NEO HE 550 doesn't make a sound and stays very cool. Outpost normally does a $50AR deal on it from time to time. A friend of mine actually ran dual 8800GTX on his.

oh you know I'm going to. But if it takes too long to be released, or if initial price is way too high, then I don't know what I'm going to do... The other options don't look as pleasing. I guess I'd be looking at the p5n or quadgt, but I'd much rather the dfi.

[mascaras]

New bios:

ASUS P5B-Deluxe/Wifi-AP v1101 Bios

Support OS:All Windows

[ 1101 ]
----------------------
1 Add new uCode to support new CPU.
2 Fix system won't complete POST with GV-MVP/RZ2(TV tuner) connected and power on before motherboard.

Download: ASUS P5B-Deluxe/Wifi-AP

regards

[TimPrice]

OT: overclock your k800i and you will get better dinner, only in dreams

[EntityAT]

Anyone see any potential headaches for me in the future w/these settings? I'm trying to go for a relatively "safe" overclock.

So far:

400FSB @ 8 multiplier w/e6600 - 3.2ghz
4gb corsair twin2x2048-6400c4

Settings:
400FSB @ DDR2-800
Auto
33.3 PCI
Spread spectrum disabled
Memory @ 2.1v
CPU @ 1.45v (reports usually around 1.4v in CPUz)
FSB, NB both @ 1.45v
SB @ 1.6v

The sytem is housed in an Antec P182 with pretty good airflow (4 total 120mm fans) and a Tuniq Tower 120. No additional cooling in the setup at all, though (on the NB/SB etc).

I haven't done any extended Orthos checks but after about 25min of it running @ priority 9, TAT reported temps of ~47-48C with spikes up to 50C.

I've tried to lower the voltages a bit but it seems like each time I do, I usually get some instability. Is there a best process for which voltage I should worry about the most, given my setup? I'd love to go higher than 3.2 but stability is a must on this rig; I really don't want to spend all day worrying about reboots, reinstallations (I've had to do my fair share already), etc.

Rob

[ziddey]

You should be able to lower vfsb to stock 1.2v. That'd also help with long term reliability we can imagine since intel is speccing a real low max. Also, it might be a bad idea to fix pcie at 100 or 105.
SB shouldn't require 1.6v either. 1.5v should be sufficient, although there shouldn't be much risk to running 1.6.

[EntityAT]

You should be able to lower vfsb to stock 1.2v. That'd also help with long term reliability we can imagine since intel is speccing a real low max. Also, it might be a bad idea to fix pcie at 100 or 105.
SB shouldn't require 1.6v either. 1.5v should be sufficient, although there shouldn't be much risk to running 1.6.

By "it might be a bad idea" do you mean "might not" be a bad idea?

I've decreased the vCore so far to 1.375 (reporting as 1.344 right now in CPUz) and all seems good. Will be doing Orthos tests in a bit. The rest of the voltages are the same but I may decrease the SB voltage next.

So far I really love this board.

Rob

[ziddey]

ah, my bad. yeah, might not.

[Hicks]

Thanks for thread. Ive just got a Asus P5B-E Plus, and im gonna put in a ES 6700 and 2x1GB Gskill DDR II PC6400 HZ. Is the Deluxe pretty much the same?

Looking to overclock as high as possible when i get it built.

Can't find that many people with the -E Plus.

[laragirl83]

Here are my BIOS screens, summer is coming (hooot), i am prepared
CPU@1.216v temps: idle 30C, load: 50-55C, depends on app!

[laragirl83]

OR!

[dnoiz]

Anyone see any potential headaches for me in the future w/these settings? I'm trying to go for a relatively "safe" overclock.

So far:

400FSB @ 8 multiplier w/e6600 - 3.2ghz
4gb corsair twin2x2048-6400c4

Settings:
400FSB @ DDR2-800
Auto
33.3 PCI
Spread spectrum disabled
Memory @ 2.1v
CPU @ 1.45v (reports usually around 1.4v in CPUz)
FSB, NB both @ 1.45v
SB @ 1.6v

The sytem is housed in an Antec P182 with pretty good airflow (4 total 120mm fans) and a Tuniq Tower 120. No additional cooling in the setup at all, though (on the NB/SB etc).

I haven't done any extended Orthos checks but after about 25min of it running @ priority 9, TAT reported temps of ~47-48C with spikes up to 50C.

I've tried to lower the voltages a bit but it seems like each time I do, I usually get some instability. Is there a best process for which voltage I should worry about the most, given my setup? I'd love to go higher than 3.2 but stability is a must on this rig; I really don't want to spend all day worrying about reboots, reinstallations (I've had to do my fair share already), etc.

Rob

I have my E6600 @ 3,2 Ghz ( 8 x 400 ) at 1,35 Vcore in BIOS ( 1,3 in Windows) stable. So normally you should be able to go lower. My case is an Antec SOLO and I have around 55 C temps under load.

R.

[h4v0c336]

Hey guys.. im kinda new to overclocking, it was much much easier on my old amd and a8n32 sli deluxe mobo but now i have a core2duo 6400 and the P5B deluxe wifi edition mobo, anyway heres the deal one thing i dont get is if i put the FBS up anymore then what it came when i reboot the pc it will shutdown entirely then come on for a second, go off then come back up. I read something on that in another thread here, its very odd and i wish i knew why. Next thing i had the FSB at 320 x 8 and if i put it to 321 the system wont boot up, is that due to voltage or something? Im not really sure. Another thing is my memory ( http://smg.photobucket.com/albums/v2.../Overclocking/ ) cpu-z screens of my CPU and memory. Memory is only running at 333mhz apparently 5 6 6 18 timings seems pretty bad compared to what ive seen on here (PNY ddr2 5300 ram, only thing i could get my hands on at the time) Could the ram being screwing up my overclocking or voltages... i read people were getting over 400-500 on stock voltage so i dunno whats going on here, thanks in advance

[jnolla]

Hello everyone I'm having problems with my OC; I can't get passed 3.33 on 370 * 9. Here is the setup.

CPU Freq = 370
Dram = 925

Performance = Standard
PciE = 101
PCI = 33.33

Memory Voltage = 2.25
Vcore = 1.50
FSB = 1.4

MCH = 1.75
ICH = Auto

P5W Deluxe WiFi.
e6600 running at 3.33.
OCZ 1GB (2 x 512MB) PC2 6400 - 5-5-5-12
I'm running the latest BIOS.

I've tried running different multipliers 380*8 390*8, and so on, but no boot at any of them.

[ziddey]

I take it you tried 8x400? Also, run your ram 1:1 (800) for starters. And don't use vmch at 1.75v. Unless you really can cool that, it'll cause more problems than not. Use 1.45vmch. You won't need more than stock 1.2vfsb either.

Set ram timings as follows for now: 5-5-5-15-5-42-3-11-7-13. turn off static read. run ram 2.1vdimm for now too, since you'll only be 800mhz.

[jnolla]

I take it you tried 8x400? Also, run your ram 1:1 (800) for starters. And don't use vmch at 1.75v. Unless you really can cool that, it'll cause more problems than not. Use 1.45vmch. You won't need more than stock 1.2vfsb either.

Set ram timings as follows for now: 5-5-5-15-5-42-3-11-7-13. turn off static read. run ram 2.1vdimm for now too, since you'll only be 800mhz.

I used all you suggestions, all good! But I can't seem to get 400 * 8 or anything higher than 370 * 9 on CPU.

On the ram settings I only see options for 5-5-5-15-5; how and where do I enter 42-3-11-7-13

Do you have any other suggestions to increase speed? Can anyone post screen shots of all of the OC stuff in there Bios? Maybe I'm missing something...

Thanks