1.8A voltage questions

[Ciber]

running it at 2.7ghz on a P4B533-E, i set the Vcore in the bios to 1.70 V but in windows Pc probe shows the Vcore as 1.776 at idle and sometimes for a couple of seconds even 1.792 at idle, 1.776 is avg though. is this safe or should i lower the Vcore? anything lower is not stable at this speed. temp is 49C under full load running SETI and PRIME95 for like an hour.

it's a SL68Q with a pack date of 8/27/02

 

[CrazySaint]

That's definitely high. You shouldn't run your voltage over 1.7v idle (as reported in Probe).

 

[SupermanCK]

whatever the crazy one said...
anything over would be at your own risk...actually it's all a risk overclocker takes...but northwood has this minor defects called S.N.D.S. which usually occur when voltage is set way too high.

 

[Duvie]

F***ing Asus mobos...A whopping .09v overvolt...GOOD LORD!!!!
Make sure you are not using the overvolt jumper...turn that off as it will boost vcore .1v more then what is set in bios...


I agree and can speak from experience hanging around 1.8v can be hazardous to the p4's health...NO more then 1.7v and you should be safe at least for 4 months!!! I have been running at 1.7v and been there for 4 moths plus now without a hiccup and blazing all the time....

 

[Ciber]

I'm going to try a different PSU and see if that helps that damn gap between load and idle, if i can get the voltage stable closer to the idle voltages i should be able to run this baby at 2.8, because it boots and runs at that fine at like 1.65v problem is after a while it crashes because the voltage starts dipping pretty low, like 1.68 at idle drops to 1.6 under load.

 

[Technonut]

I have not personally read the Intel data sheet, but This thread states:

The CPU won't SDNS as long as the VCORE is equal or less than 1.70V. The max. voltage according to Intel datasheet 1.75V MAX at 69C.

I might add that I have not seen a huge number of people getting a dead cpu... and of those who did, some had a dubious setup to start with at best...

 

[CrazySaint]

Originally posted by: Technonut
I have not personally read the Intel data sheet, but This thread states:

The CPU won't SDNS as long as the VCORE is equal or less than 1.70V. The max. voltage according to Intel datasheet 1.75V MAX at 69C.

I might add that I have not seen a huge number of people getting a dead cpu... and of those who did, some had a dubious setup to start with at best...

Its not about getting a dead CPU, its about getting a CPU that won't OC. THUGSROOK and Duvie both ran a Northwood CPU at 1.8vcore - for about two weeks, that's when the CPUs started losing their OCs, I think Duvie's chip eventually needed a small vcore boost just to run at stock settings! And believe me, these guys are careful OC'ers, they don't run "dubious setups".

 

[Technonut]

CrazySaint, I ran my 1.8A @ 3.0GHz for a week and a half at 1.79V 24/7 with no reduction in OC ability. My point is.... if in fact the Intel data sheet specs the processor to run at a max of 1.75V, it should not harm the processor. Nothing more or less.

EDIT: Content