Veteran OC'er needs some advice!
 

Attached is a picture of the settings that work for my current OC in my Sig. Respectable but I am looking for more :) I am not sure what issue I am running into, but I can't get above 3.2Ghz (no system post) no matter how much voltage I pump into that CPU (had set as high as 1.45V in the BIOS). For the memory I am running slower to get a 1:1 ratio, but even if I run it at higher speeds I still can't post the system. I have tried setting the NB voltage to 1.45V and that did nothing, set the FSB Termination voltage to 1.3V at one point, that did nothing. I manually set the PCI-E frequency to 100Mhz and the PCI sync to 33.33Mhz and that also did nothing. Worth noting is I tried these things by themselves to see if any one was the issue. I also took back the CPU ratio to 8 and the system would still not post so I am thinking a FSB limitation of some sort.

What I am asking is if any of you know a combination in which to try? I am also curious what is a safe value for FSB termination and NB Vcore for voltages. I have always had them set on Auto and don't want to put those to high as to damage my mainboard. What can I say... im stumped here, any help will be good :)

Re: Veteran OC'er needs some advice!
 

Since when was the massively overclocked northbridge issue in that fsb range fixed?

edit: "The bad part is that between 360 and 399fsb" nm



But still, Have you tried 400?

Re: Veteran OC'er needs some advice!
 

Hmmm... no I have not. I was not aware fully of the FSB issue in the range 360-399. Is it possible for you to explain more why 400Mhz would be more stable than 360-399? I assume it has something to do with stepping in the NB chip but am curious. I guess to humor the idea I can take the multiplier of the CPU down so I can raise the FSB to 400 and see if its stable that way. Worth a shot I guess! Before I had the multiplier down but never went up near 400Mhz on the FSB thinking I had hit its limit much lower. From what you are saying I might have been close or in the unstable range.

Re: Veteran OC'er needs some advice!
 

$n][pErMan, you will have to get above the 400 fsb range to keep the NB from over working to hard, once you go to 401 to 450 or higher the timings on the NB are more relaxed where it will be more stable on that motherboard BUT I think your memory is what will hold you back. If you had 8500 memory this would not be an issue you could easily his hit 425x8@3.4 or 475x7@3.3.


Below you can see the difference between the 400 & 401 fsb and how the timings on the NB become more relaxed. Then you can see the performance gain as you move up on the FSB. All of these benchmarks were made with my P5B Deluxe.

400 x 8 1:1 @ 1600 FSB / Mem was @ 800Mhz Vcore 1.375 @ 3.2 - Idle-34c Load-54 (orthos)
SiSoftware - MEM = 7259/7285
SiSoftware - CPU = 29380/20477
PCmark05 - 7421

401 x 8 1:1 @ 1604 FSB / Mem was @ 802Mhz Vcore 1.375 @ 3.2 - Idle-34c Load-54 (orthos)
SiSoftware - MEM = 6761/6769
SiSoftware - CPU = 29463/20523
PCmark05 - 7380

425 x 8 1:1 @ 1700 FSB / Mem was @ 850Mhz Vcore 1.425 @ 3.4 - Idle-36c Load-58 (orthos)
SiSoftware - MEM = 7172/7196
SiSoftware - CPU = 31203/21777
PCmark05 - 7595

450 x 8 1:1 @ 1800 FSB / Mem was @ 900Mhz Vcore 1.55 @ 3.6 - Idle-40c Load-71 (orthos)
SiSoftware - MEM = 7365/7385
SiSoftware - CPU = 33188/22560
PCmark05 - 7893

475 x 7 1:1 @ 1900 FSB / Mem was @ 950Mhz Vcore 1.425 @ 3.3 - Idle-36c Load-58 (orthos)
SiSoftware - MEM = 7814/7828
SiSoftware - CPU = 30532/21296
PCmark05 - 8528

Re: Veteran OC'er needs some advice!
 

FSB straps FTmfLmf!

Re: Veteran OC'er needs some advice!
 

my crummy 6400 promos works fine @ 427 with tighter than stock timings.

http://www.thetechrepository.com/showthread.php?t=41

Re: Veteran OC'er needs some advice!
 

Hmmm... well I tried both 401Mhz and 410Mhz, both at 8x Multiplier and 7x Multiplier and my system would not post by jumping up past the bad zone either :( How much voltage should I give my North Bridge and FSB Termination voltage??... right now both are at Auto and I have no idea what they read... I dont want to go frying my chipset or anything by manually setting them to high. :p Just trying to rule things out.... perhaps I just hit my max :(

Re: Veteran OC'er needs some advice!
 

On this board you have to set all of them manually, try these for starters. Did you do the Vdroop pencil mod? Have you removed that retarded foil wrapper of the NB to add a 40mm fan, I like blue leds can you tell LOL. You really need it if your FSBv is over 1.6v.

http://img59.imageshack.us/img59/4067/11my5.th.jpg


After doing these setting with no avail then try 2T on your ram instead of 1T.
PCI-E F = 100
PCI SYNC = 33.33
SPEED SPECTRUM = Disabled
FSB-TERM = 1.3
NB VCORE = 1.45
SB VCORE = 1.50
ICH = AUTO
------------------------------------
CPU CONFIG

only 3 I have ENABLED , the rest are disabled.

Modify Ratio support = ENABLED (7-8-9)
CPU TM Function = ENABLED
Execute Disable Bit = ENABLED

Re: Veteran OC'er needs some advice!
 

THanks! :) I am going to give that a try over the long weekend :)

Re: Veteran OC'er needs some advice!
 

OK dude, I will keep an eye on this thread. Good luck!:)

Re: Veteran OC'er needs some advice!
 

Here are some pics of my BIOS settings,
http://i129.photobucket.com/albums/p...BIOS_15119.jpg
And for RAM, my 4gb of G.Skill DDR2-800 I just got in the mail does 3.4ghz fine, and my former RAM (http://www.nvnews.net/vbulletin/showthread.php?t=104777) did it fine as well. :)

Re: Veteran OC'er needs some advice!
 

Cool... looks like I have a few examples to try and work from. Curious, did you do any special cooling additions to your NB and SB like Mullet did for that voltage of 1.45 on the NB? I will probably end up doing it anyway, but if for testing purposes I don't need to it would save me some time :)