ytoledano

Distinguished
Jan 16, 2003
974
0
18,980
Hi, the reason for to think that is that my rig has been acting real funny for the last week and it has been getting worse and worse until it was completely unstable a few minutes after boot, today, at current settings.
rig:
P4 2.4 @ 3.0, FSB 250. stock voltage.
2*256MB Corsair PC3200LL @ 5:4 2.6V
Abit IS7
Sapphire Radeon 9800Pro

I have been running like this for something like a year and suddenly, a week ago the first sign - Prime95 alerts on error. So OK, one error in a year of 24/7 operation is OK. But that day another one, and another. After that I have been starting to get them every 3 hours or so. Then, 4 days ago, sudden reboots and lots of them mostly in games. Yesterday explorer.exe, IE and other programs start crashing a lot with errors I've never seen and I got a blue screen. Today everything crashes so much I can't do anything anymore. I go to stock speeds on everything and so far things are stable.

I don't understand what's happening! Why is everything less stable over a week and not a sudden crash followed by an immobilized system? Why is hardware failing? I haven't overvolted anything. Which component is failing? I'm thinking the CPU because the errors in Prime95, but maybe RAM?

<A HREF="http://www.ocforums.com/showthread.php?s=7ef1566733a753459aa927da0d08225e&threadid=115166" target="_new">Info on SNDS (Sudden Northwood Dead Syndrome) can be found here</A>

Abit IS7 @ 275 FSB, OCZ PC4200 RAM @ 550Mhz, P4 2.4 @ 3.3Ghz Vcore @ 1.625, Sapphire Radeon 9800P @ stock, for now.
Thermalright SLK-947U, P3 HS @ NB.
 

ChipDeath

Splendid
May 16, 2002
4,307
0
22,790
AFAIK, SNDS only happens when people pump more than 1.75V thru the CPU. you say yours is at stock voltage, so I would say yours probably isn't that.

Hows your Power supply? Sounds quite a lot like a dying PSU.

Check your voltages using motherboard monitor or a similar program - see if any of them seem to drop just prior to crashing.

---
Epox 8RDA+ rev1.1 w/ Custom NB HS
XP1700+ @205x11 (~2.26Ghz), 1.575Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro 420/744
 

ytoledano

Distinguished
Jan 16, 2003
974
0
18,980
AFAIK, SNDS only happens when people pump more than 1.75V thru the CPU. you say yours is at stock voltage, so I would say yours probably isn't that.
That's what I thought but it seemed so weird to me that what's happening is a long process that I didn't know what it is.

I have a new generic 520W PSU.

My voltages are really screwy, have been so even with a different PSU. my problem is with Vcore, at 1.525 set at BIOS I only get 1.44-1.46 under load, sometimes 1.42 for brief moments. But this has never been a problem. All other volages are exactly as they are supposed to be.

Abit IS7 @ 275 FSB, OCZ PC4200 RAM @ 550Mhz, P4 2.4 @ 3.3Ghz Vcore @ 1.625, Sapphire Radeon 9800P @ stock, for now.
Thermalright SLK-947U, P3 HS @ NB.
 

ChipDeath

Splendid
May 16, 2002
4,307
0
22,790
hmm... I would hazard a guess that your motherboard is losing it's ability to deliver stable voltages at those sorts of speeds, if you're sure about the PSU.

I guess the only way to find out for sure is to either try your CPU in a different mobo, or to try to find a replacement 2.4 from somewhere - if a new 2.4 has the same problem then it must be the mobo.

I would hate to think it was your board - I always thought it was ASUS who suffered from poor voltage control.

I take it all your temps are ok? Not something like a build-up of dust + an increase in ambient temp has just pushed it over the edge?


---
Epox 8RDA+ rev1.1 w/ Custom NB HS
XP1700+ @205x11 (~2.26Ghz), 1.575Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro 420/744
 

P4Man

Distinguished
Feb 6, 2004
2,305
0
19,780
SNDS is not impossible, but my first guess would be bad caps. <A HREF="http://www.badcaps.com/ident" target="_new">http://www.badcaps.com/ident</A>

FWIW, in the last 3 or 4 cases where I suspected bad caps (both on this forum and elsewhere), it turned out to be the problem in each and every case. Let's see if you screw my statistics now :)

= The views stated herein are my personal views, and not necessarily the views of my wife. =
 

ChipDeath

Splendid
May 16, 2002
4,307
0
22,790
Check his sig - his FSB <i>was</i> 275 at some point it would seem :eek:

---
Epox 8RDA+ rev1.1 w/ Custom NB HS
XP1700+ @205x11 (~2.26Ghz), 1.575Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro 420/744