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P5B Deluxe Bios version and overclock performance

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May 31, 2007 1:53:54 PM

I updated my bios from 0910 to 1101 for this MB: my mb won't POST with what was a stable overclock setting for my E4300: a shy 9*326 overclock which already needs no less then 1.45 bios vcore (1.40 real on load).
1004 bios will post unstable on Orthos. 0910 is fully stable. I didn't test older bios because of my need for Support SLP 2.0 introduced in that bios.

Anyone else knowing of issues, overclock limit with the new ASUS bios?

Also my config have 4 DDR2 Corsaire XMS2 modules, 512Mb each
June 3, 2007 8:09:17 AM

I'm back again.

I tried to increase the FSB on my mb.
I increased the vNB and vFSB to the first value before red. I lowered my E4300 multiplyer to 6, and increased FSB. It won't POST anything above 350MHz. Suspecting an FSB hole, I tested 400...405 without success. My DDR2 800 was fixed for a 1:1 ratio and I overvolted it to 2.2v for the test. The timings are very loose also 5-5-5-15 (default ratings)

Is there a way to know if the limit is a bad motherboard or my CPU somehow locked for an FSB limit like I read on some forums for these E4300 recent batches... (mine is Q649)

Many thanks for your help
June 3, 2007 9:12:34 AM

The 1004 updated memory compatibilty and support for 1333 FSB processers. I have heard a LOT of P5B Deluxe users (overclockers) running into the same problems your describing, the so called FSB hole. If you are going to be using the 1066 FSB processer's (Conroe Core 2 Duo) with these P5B Deluxe mobo we all must go no higher than 0910 bios version. You can only hope that you can roll back your bios back to 0910 version or your mobo is bricked. The 1004 bios and later versions are optimised for only the new yet to be released 1333 FSB processer's.
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June 3, 2007 10:20:35 AM

Quote:
a shy 9*326 overclock which already needs no less then 1.45 bios vcore (1.40 real on load)......Anyone else knowing of issues, overclock limit with the new ASUS bios?


Yeh, I know that you're probably running 1.45 "real" on load. Asus misreports its "measured" voltage. Get out a voltmeter and find out that the "set" voltage is closer to reality.
June 3, 2007 12:20:14 PM

as far as i know, we can roll back from 1101 bios to 0910 version.
June 3, 2007 3:22:16 PM

I did this no problem, you need an older AFUDO version, the new tools won't allow to revert back

Many thanks for your help, I will stick to 0910 version

This board was advertised, tested and claimed to reach up to 600 Mhz FSB. I don't call for that, but not even able to achieve 400 FSB looks like strange. Anyone knows if the new E4300 won't POST above some FSB limit or is it my mb?
June 3, 2007 3:48:05 PM

Quote:
I did this no problem, you need an older AFUDO version, the new tools won't allow to revert back

Many thanks for your help, I will stick to 0910 version

This board was advertised, tested and claimed to reach up to 600 Mhz FSB. I don't call for that, but not even able to achieve 400 FSB looks like strange. Anyone knows if the new E4300 won't POST above some FSB limit or is it my mb?


Not all CPU's will overclock the same thats life. Not every motherboard will overclock the same either, but that doesn't mean that the mobo can't reach 600 FSB. Not all cheeseburgers taste the same either. It could be your PSU, CPU batch, ram, there's just too many variables. Hope you get your PC back to where it was.
June 3, 2007 8:03:22 PM

Honestly, with my setup I have now a 70% overclock. If it wasn't advertised on so many sites that this chip can run 3.2GHz without a vcore increase, I would have never been deceived.

As some reviewres early said: take care, these results could be only from engineering samples...

It is the truth, Intel did it well, they got their goal: a massive rush over these C2D processors...

But after all, I can't be upset, at 70% overclock margin, and above X6800 CPU at $1,329.00. I got mine for less than 150$...

To decrease my CPU fan speeds, I enabled that buggy PECI feature. CPU temperature detected by bios is now around 20° above ambiant at idle, instead of 10°. My fans run slower, and TAT is still quite temps (the Zalman 9700 have a low drop between low and high fan speeds)
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