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P4B-533 Owners -> I need your help / advice please....

T

Tillo

Member
Hi all !

Well, am about to build my second 1.6A system for my brother-in-law. He has all the parts *except* for the motherboard - he uses DDR & yes, he too wants to overclock as far as he can....... He is **VERY** stubborn and only wants to use an Asus board - so I need to choose between the P4B- 266 or the P4B 533. Where we live, the P4B-266 will save him the equivalent of around $60US.

Now......I know the P4B 266 very well because that is **my** rig which I recently wire-modded to 1.7V to fix the cold / warm booting problems - thanks to all of you here for that - you were all a great help !!!!!

Here's my problem:-

=> he is VERY reluctant for me to in may way wire-mod his motherboard - which as I explained to him, would be **quite likely** if we got the P4B 266 [even though I have already done mine] ........... so ......... I need to know:-

Q => Are there any "issues" or "known" problems with the P4B-533 board & using it as a basis to O/C a 1.6A ?

Q => Has anybody here had to wire-mod their P4B 533 setup to get full voltage on boot-up ?

Q => Did the wire modding work %100 fine on your P4B 533 ?

After searching some older posts, I read that some people have said that the P4B 533 does NOT need to be wire modded even when o/clocking at relatively higher voltages like 1.70 <-> 1.75V -> so.....

Q => Does anybody here know if it is actually factually true that the P4B 533 does **NOT** need to be wire-modded to get full-cpu voltage at boot-up ? ie: does the P4B 533 apply the bios selected higher CPU voltage at boot up, or does it too boot up at 1.5V and then go to 1.7V like my P4B266 ?

Thanks to all in advance for your opinions / help.

Tillo
😕
 
Thankyou THUGSROOK

Man THUGSROOK........you are a SENSATIONAL resource for quality info !!!!

Well....you've sold me....after going through those posts, the P4B 533 **IS** the way to go instead of the 266 for my brother-in-law.....

Now, about the cold-booting problem & the P4B 533.....

THUGSROOK.... I noticed from yours and other posts, that you said that there was no need for the wire mod on the P4B 533 because the bios already allowed you to access up to 1.95V - even though as you rightly point out, sticking to 1.75V or less *is* the golden rule..............

But.......I *wasn?t* contemplating the wire mod on a P4B 533 to get more voltage?lack of voltage on my 266 was never the problem...

What I am trying to find out it is:-

Q => Does the P4B 533 suffer from the same cold-boot problem that the 266 has - in that, no matter what you select in the P4B 266 bios for VCore, it **always** starts the boot up at 1.5v [CPU default] and hence, every few boots or so, you get thrown back into the bios on boot up etc.....

Q => Can you please advise THUGSROOK, has the P4B 533 "fixed" this boot-up voltage problem OR is it still the same as with the P4B 266 ?

BTW THUGSROOK, I notice that you DID have a P4B 266 before you got the 533......can you please tell me, did you suffer from the cold-boot problem with your P4B 266 setup & did you do the wire mod on your P4B 266 setup ?

Tillo
 
my 1.6A p4b266 needed the wire mod for 171fsb (i know poor me)

the p4b533 does not - and i have heard ZERO reports of anyone ever needing to.

i suspect they fixed that problem, and our selected voltages are locked even when powered off.
hope he likes the jumper free 3:4 hack on the 533 too 😉

HTH 🙂
 
Thanks again THUGSROOK

WOW.....that must have been an *awesome* 1.6A that you had - I mean, not needing the wire mod until you hit 171fsb - that means that your system had NO cold boot problem until 171fsb. Full boot up at 170fsb @ 1.50V - man that **IS** awesome CPU ........ and I thought that my 1.6A @ 2400 @ 1.70 was good !!!!

THUGSROOK, the "testing methodology" I used to determine that I DID have a cold-boot problem was as follows:-

=> as I knew the CPU ran fine at 1.70V @ 151fsb, I shut down and re-set the VCore to 1.5V and left the fsb at 151 - it wouldnt boot - tried 1.575, 1.60, 1.625, 1.65 & 1.675 - it was only at 1.65v that it did boot, but was not stable until 1.675 - wire tricked at 1.70 to be "safe".

My conclusion was, as it DID run at 2400 @ 1.70V, but would NOT boot at 2400 @ 1.50V, I concluded that I DID have a cold boot problem and therefore I needed to do the wire mod.

Q => THUGSROOK, from your knowledge and experience, did I use a "logical" / "scientific" way to determine whether or not I did, or did not have a cold-boot problem ?

I'd appreciate you thoughts / comments.

Thanks again.
Tillo
 
you did not have a cold boot problem.

a cold boot problem is when no amount of voltage will boot it from the OFF position.
but you could easily reboot at that speed, run prime95 for 2 days, not crash, and be fine.
just dont turn it off 😉

HTH 🙂
 
Hmmmmm.................I'm a bit intrigued now THUGSROOK......

You stated that based on my testing methodology, I did *not* have a cold-boot problem.....yet the wire mod has seemed to fix my problem ?!?!

What was my problem ? => occasionally, on cold or warm boot, the system would throw me back into the BIOS at 1600mhz and then the *only* thing I would have to do was to hit F10 to save and re-boot the system to 2400......I *assumed* that the problem was that it was not getting the full 1.70V at boot-up - so by giving it 1.70V at boot up with the wire mod, this would fix it. It does seem to have fixed it.

I thought my problem was a classic "lack of boot up voltage" which ONLY the wire mod could fix - the reason I say ONLY the wire mod could fix, was that the problem happened no matter how high I put up the VCore voltage....

Thats why I described my problem as the cold-boot problem.

THUGSROOK....

Q => Was the wire mod the "correct" solution for my problem ?

Q => Or should I undo the wire-mod and look elsewhere for a fix ?

I'd *really* appreciate you advice.

Thanks,
Tillo
 
you just needed more vcore voltage thats all.

if you were outta voltage you coulda switched the overvolt jumper on.
with the wire mod you are now running a 1.76v default and no way to lower it.
the highest you will get with the OV jumper is 1.74v. (w/o the wire)

HTH 🙂
 
Hi THUGSROOK

Your wrote:- ".........you just needed more vcore voltage thats all....."

THUGSROOK - no matter how high I went with the VCore voltage *and* how low I dropped the O/C, I always got the same occassional-reboot-into-the-bios problem................thats why I **assumed** it was a lack of full VCore voltage at the initial boot-up phase ? That combined with the othe rfactor that when it DID boot up correclty at 151fsb @ 1.70V =2400 - it runs perfectly -> Prime95 for days on end etc......

Hence, it was these two (2) factors that led me to conclude that I needed the wire-mod........as I said above, it just seemd like a "classic" lack of voltage on boot up issue ?

Q => Did I totally misinterpret the symptoms of my hardware setup ?

Q => Given my above scenario explanation THUGSROOK, would the wire mod have been your "conclusion" too ?

Tillo
 
the CPU ran fine at 1.70V @ 151fsb.
I shut down and re-set the VCore to 1.5V and left the fsb at 151 - it wouldnt boot.
tried 1.575, 1.60, 1.625, 1.65 & 1.675.
it was only at 1.65v that it did boot - but was not stable until 1.675
wire tricked at 1.70 to be "safe".
Click to expand...

why didnt you try the overvolt jumper and run 1.7v insted of the wire mod 1st?

its a close call on your cpu - but you did have 1 more option to try.

running 1.76v is a tad high by today thinking.
if you could run stable @ 1.73v - 1.74v youd be a little safer.

you do know where the OV jumper is right?

HTH 😀

<EDIT> dont forget that at the time we all dove into the wire mod - we all thought 1.8v was safe.
 
Hi THUGSROOK !

I do have the overvolt on - in my bios, with overvolt on, I can select anywhere from 1.50V <-> 1.775V.

Your wrote "......why didnt you try the overvolt jumper and run 1.7v insted of the wire mod 1st....?

My understanding is that the overvolt *only* gives you extra & higher VCore voltage settings to pick from - it does *NOT* apply more than the CPU-default voltage at startup ie:- with overvolt ON, my cpu VCore is set to 1.70V **BUT** on boot-up, it still initally applies the cpu default of 1.50V and **THEN** increases it to 1.70V during boot-up - hence my occassional-reboot-into-the-bios problem ?

Q => This is correct isnt it ?

Q => So the only way to give it 1.70V from boot-up is the wire mod - or get the P4B 533 ?

🙂Tillo
 
the p4b266 may not be defaulting to 1.5v. ever notice that during a "defualt bootup" when installing a new cpu it uses 1.65v? hmmmmm as a matter of fact it even unlocks the multiplier. interesting isnt it?

anywasy a cold boot is when nothing will get it to boot.

all you had to do was add more voltage

"it was only at 1.65v that it did boot - but was not stable until 1.675"

if you wanted 1.7v why didnt you just set it for 1.7v? why the wire mod? you had plenty more voltages to choose from.

you are using it, and it works, but you didnt "need" it.

i needed it cause i was using all 1.775v and it still couldnt cold boot @ 171fsb. but if i rebooted into that speed it would run forever.

🙂
 
Hi THUGSROOK

I think we may be speaking at cross-purposes....you asked:- "........if you wanted 1.7v why didnt you just set it for 1.70v? why the wire mod ?......."

=> Wel.....because supposedly the *ONLY* way to get 1.70V to your CPU from *boot-up* onwards is to use the wire mod. If I just selected 1.70V for the VCore in the BIOS [*without also* wire modding] the PC will boot up using **only** 1.50V and *then* it will bump up the Vcore to 1.70V during the rest of the boot up process...........

This is **right** isnt it ?

Tillo😕
 
i see where you are confused.

you think you can bootup to windows on 1.5v? no.

all the bios needs todo is get a signal from the cpu. once that happens all votage is applied.
1.5v may be plenty to get that signal to the bios - but not bootup windows.

so your method was flawed.

you can probably run just fine w/o the wire and using the OV jumper.
and you keep saying youre running @ 1.7v - you are not - you are running 1.76v, check asus pcprobe.

🙂
 
Hi THUGSROOK

According to Asusprobe [latest version], when running 151fsb @ 1.70v @ 2400:-

- at idle, my 12V line fluctuates around 11.84, my 5V line is around 4.92, my 3.3V line is around 3.216 and my CPU voltage sits around 1.66.

- at full load, my 12V line fluctuates around 11.62, my 5V line is around 4.94 and my 3.3V line is around 3.211 and my CPU voltage sits around 1.58 <-> 1.60.

I am using a Topower 420w Dual Fan Gold quiet P/S.

Do you see any porblems here THUGSROOK ?

Tillo😕
 
am i to guess that you have the wire mod and the OV jumper on at the same time?

😕 1.66v from the wire mod on a P4B266? 😕
 
Hi THUGSROOK

No......the system is *not* currently wire-modded at all [ I am experimenting without thewire mod ] *but* the overvolt is *on*.....

Tillo
 
oh ok ic now - i completely misread your last post :Q

ok now that makes total sense - set for 1.7v and getting 1.66v.

in reality you are at 1.66v - feel free to push it higher - til it shows 1.7v.

your PSU is staining to run....
your 12v line is tad low - but your 3.3 IS low. try a better PSU.
 
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