2.26b and BD7II

[DarkEdge]

Well as the subject suggests I have a P4 2.26B on an Abit BD7II with 512mb of Corsair XMS 3200. Currently I can only hit 2.9 semi stable. Some days better then others.

I'm trying to attain a higher overclock but I can't seem to identify the culprit 100%. Voltage is set to +15%(1.65) according to the Abit bios. Temps are 45c full load. Everytime I set the fsb over 170, even just 1mhz the screen goes black after reboot and theres nothing. I'm hinting to the fact that it may be my psu. When running prime 95 under full load voltages drop to 1.60. I was thinking about doing the wire mod trick to obtain a higher voltage but that will not do me any good if it is indeed my PSU. My PSU is 350w TTGI TT-350SS.

I don't want to shell out money on a new PSU unless thats the case of what it is. I'm willing to but would rather not have to unless needed. If its my motherboard, thats having the problems handeling the FSB what can I do to help. I already put AS3 on the Northbridge and a fan. Doesn't even get hot anymore. If nothing can be done what MB would you recommend? The Max series from Abit? If its the CPU thats fine. I'm happy with my overclock is thats all it can do.

Any help would be a great help. I just want to here peoples opinions before I drop cash on testing to see what it is.

[TASOS]

Hi & welcome to the forums

1st of all the Vcore drop @ full load is a fact...with all Northwood P4
I believe you need more Vc to make it stable @2.9ghz
Your temps are ok at 45C max

[drewthomas14]

there isnt a 2.26b its just 2.26 i looked at the p4 spec sheet for all there p4s

[DarkEdge]

Well according to the OC database their is and thats what I run. There was a 2.2a that was the 400mhz bus and the 2.26b is the 533mhz version.

[pacino]

Welcome to our territory!!!!!!!!!!!!!!!
You need more vcore, wirewrap her for 1.7 to start with and I'm pretty sure you can get her stable @ 2.9~3.0 with some luck :)

[Jeff Bolton]

Originally posted by drewthomas14
there isnt a 2.26b its just 2.26 i looked at the p4 spec sheet for all there p4s

everyone's a nitpicker...

calling it the 2.26b is a common mistake, you know what he means so it doens't matter. its 2.26 ghz, so what difference does it make.

on the subject of your question, the 2.26 and the bd7-ii have proven to be an excellent combo, but 2.9ghz isn't anything to scoff at either. 3.0 is a nice target but don't get disheartened if its at the limit of the chip...sounds like the rest of your components are great. only thing i could think of would maybe be your ram ratio. how do you have your ram ratio set? the PSU is also another good idea. i know what you mean about not wanting to spend money on the PSU, but it couldn't hurt to have a nice beefy 450-watter even if you never need that much power. its overkill, so you don't have to worry about that being a problem :D

good luck finding your bottleneck!

jeff

[oRIDDLERo]

Originally posted by pacino
Welcome to our territory!!!!!!!!!!!!!!!
You need more vcore, wirewrap her for 1.7 to start with and I'm pretty sure you can get her stable @ 2.9~3.0 with some luck :)

Yes, as you can see this boad undervolts!

wrap 2 pins for 1.7v and im almost sure you will hit 3ghz stable

[micamica1217]

I agree with gofastman and the others.....

you need more voltage.

try the wire rap trick or Mr.N's defogger mod (the defogger mod was much easyer for me.)

see if you can get a stable OC at 3.0ghz after the voltage increase.

if you notice that it still seems unstable....look at your other voltage rails as well.
if you having large voltage dips with your 5v, and 12v as well as others....then maybe you then need to think about a new PSU.

good luck

mica

[oRIDDLERo]

Just curios, what is considered a large V drop in the 5v and 12v rails?

[micamica1217]

Originally posted by gofastman
Just curios, what is considered a large V drop in the 5v and 12v rails?

I can't say what is considered a large drop....

yet if I see my 5v at 4.90 or my 12v at 11.75 (or less) then I would consider a more powerfull PSU.

what do you think gofastman.

mica

[oRIDDLERo]

Originally posted by micamica1217


I can't say what is considered a large drop....

yet if I see my 5v at 4.90 or my 12v at 11.75 (or less) then I would consider a more powerfull PSU.

what do you think gofastman.

mica

Im not really sure,

My Enermax 430w is loaded pretty bad, lol.

my 5v is around 5.20v and fluctuates between 5.18-and 5.20
my 12v is around 12.20v and fluctuates between 12.40-and 12.38

My guess is I’m ok, but I was curios nonetheless

[micamica1217]

Originally posted by gofastman


Im not really sure,

My Enermax 430w is loaded pretty bad, lol.

my 5v is around 5.20v and fluctuates between 5.18-and 5.20
my 12v is around 12.20v and fluctuates between 12.40-and 12.38

My guess is I’m ok, but I was curios nonetheless

I think you doing great.....

with prim95 running right now, my 5v is 5.00-5.05....12v is 11.89-11.98

did you mod that enermax?

mica

[oRIDDLERo]

nope its stock...

Has 3 WD Drives, 2 120mm Enermax, 2 80mm tornados (On Rheostat), 2 80mm enermax, 3 cathodes, 1.7v CPU, GF4 4600... ETC.

quite a load...