DDTUNG - help me out! P4T533 question!

[JBELL]

I got a 2.0a northwood on a asus p4t533

I got it running 2.3Ghz right now

but before I go any farther .. when overclocking can I adjust BOTH the CPU external clock speed and the multiplier??

I got the 400MHz cpu so I have multiplier choices ranging 16.0x to 24.0x

and cpu external clock choices of:
100MHz
105MHz
110MHz
115MHz
120MHz
133MHz
136MHz
140MHz
and
145MHz

I am @ 20.0x 110MHz right now.

[DDTUNG]

I didn't realize that you can change multipliers on Northwoods. I thought they were all locked. Are you sure?

Put the Vcore up to 1.85V and up the FSB and see how far she'll go. After you find your max oc, back off to 1.75V and lower the oc by about 100MHZ and start folding.:D

DDTUNG:cool:

[JBELL]

I can change the settings all with DIP switches on the board...

how do I get the vcore that high? I cranked it up within the BIOS and got her @

12v @ 12.352v
5v @ 5.16v
3.3v @ 3.392v
vcore @ 1.632v

That is 100% full load folding@ 2.3GHz

[Hardass]

What is your Vcore at in the bios?

[JBELL]

1.63

[JBELL]

locked up on me @ 20.0x 120, vcore @ 1.625

backed down to vcore - 1.6 and 20.0x 118

2362.49GHz

472.5 sys bus

[ZhaoYun]

Unless you have an unlocked engineering sample, playing with the multiplyer dip switches won't make a difference. :( If you need a higher vcore, there should be an overvolt jumper located on your mobo. Btw, what are your full load temps? :)

[JBELL]

Originally posted by ZhaoYun
Unless you have an unlocked engineering sample, playing with the multiplyer dip switches won't make a difference. :( If you need a higher vcore, there should be an overvolt jumper located on your mobo. Btw, what are your full load temps? :)

full load is 34c/93f @ 2.2 GHz

Vcorse - if i set to 1.65 bios reads at 1.78 but asus pc probe reads it like I set it...

[Hupperware]

This is the same board that MaximumPC took a 2.53 GHz well over 2.8 GHz (This year's Dream Rig). I think your focus is in the wrong place as far as blaming the board. PC1066 has had it troubles with being overclocked, I believe that is where your problem lies. This is why many manufacturers of RAM have had trouble producing RIMM 4200s.

This board has run fine for me... of course I have no need to overclock... it's definitly fast enough for programming in .NET and video work. But I think the article in MaximumPC explains your difficulties.

[JBELL]

Originally posted by Hupperware
This is the same board that MaximumPC took a 2.53 GHz well over 2.8 GHz (This year's Dream Rig). I think your focus is in the wrong place as far as blaming the board. PC1066 has had it troubles with being overclocked, I believe that is where your problem lies. This is why many manufacturers of RAM have had trouble producing RIMM 4200s.

This board has run fine for me... of course I have no need to overclock... it's definitly fast enough for programming in .NET and video work. But I think the article in MaximumPC explains your difficulties.
that 2.53 to 2.8 is only 300MHz on a 533 bus, I have a 2.0a with a 400 MHz bus.. I was @ 20.0x120 stable most of the night under 100% load.

I have more limitations in that aspect also pc1066 ram is meant for 533 bus systems.. it works on 400 but not as well...

[JBELL]

another aspect of the limitations of RIMM production is rambus is copyrighted or protected somehow and the owner of rambus technology is basically raping companies for the rights to produce it under their name.. it was a big deal that made news headlines many months back.. basically rambus is shooting them selves in the foot trying to keep the technology to themselves and not sharing in an open fair leveled market ... kinda in the way microsoft protects the core code of windows.. untill recently they wouldn't release it 100% to other companies with out court intervention.. that is how the news show - dateline or whoever compared it... Companies like Crucial could easily make that ram.. but what rambus wants in royalties - you could kiss your profit good bye becuase it is NOT a big enough market yet and it is still too new to deem it worthy for every manufacturer to produce RIMM

[ZhaoYun]

Based on what I've read so far about people's experiences with the P4T533, they either had it stable or very unstable at default speeds. So if you're not having any instability at default speeds it isn't the mobo. I believe the 2.0a is limiting your overclock. The average overclock for a 2.0a is 2.4Ghz; only a handful actually reach 3Ghz. Your memory may or may not be a factor as well in limiting your overclock, but you can always determine that by changing your cpu/mem divider and testing the limitations of it.

[JBELL]

I plan on testing chip in a DDR board... I can not keep a stable system above 20.0x110sys bus