Random reboots/instability

[PoPPeR]

I'm running a Barton 2500+ @ 2.10ghz (11x190), on an Epox 8RDA+ with 2x256 Kingston HyperX PC3200 at 190mhz. Everything is pretty stable right now. However, when I try to up the fsb and ram to 200/200, the system is extremely unstable. My voltages are: cpu - 1.7v vagp - 1.6v vdimm - 2.77v. I'm running a 9800pro.

Running prime95 toture test at 190/190, I get a CPU temp of 40 and a system temp of 30, so I don't think it has anything to do with overheating. Is power probably the main cause? I'm running a CompUSA 400w power supply.

 

[Shimmishim]

Originally posted by: PoPPeR
I'm running a Barton 2500+ @ 2.10ghz (11x190), on an Epox 8RDA+ with 2x256 Kingston HyperX PC3200 at 190mhz. Everything is pretty stable right now. However, when I try to up the fsb and ram to 200/200, the system is extremely unstable. My voltages are: cpu - 1.7v vagp - 1.6v vdimm - 2.77v. I'm running a 9800pro.

Running prime95 toture test at 190/190, I get a CPU temp of 40 and a system temp of 30, so I don't think it has anything to do with overheating. Is power probably the main cause? I'm running a CompUSA 400w power supply.

try increasing the vdimm voltage up a little more and bump up your cpu voltage as well. that may fix your instability problem.

 

[wampa]

Originally posted by: Shimmishim

Originally posted by: PoPPeR
I'm running a Barton 2500+ @ 2.10ghz (11x190), on an Epox 8RDA+ with 2x256 Kingston HyperX PC3200 at 190mhz. Everything is pretty stable right now. However, when I try to up the fsb and ram to 200/200, the system is extremely unstable. My voltages are: cpu - 1.7v vagp - 1.6v vdimm - 2.77v. I'm running a 9800pro.

Running prime95 toture test at 190/190, I get a CPU temp of 40 and a system temp of 30, so I don't think it has anything to do with overheating. Is power probably the main cause? I'm running a CompUSA 400w power supply.

try increasing the vdimm voltage up a little more and bump up your cpu voltage as well. that may fix your instability problem.

Since OC'ing is a hit or miss, it could be various things. But yea it could also it be your PSU. how many devices do you have running in your PC?

 

[pspada]

In overclocking, start with everything at stock. They slowly up various pieces, and test each change for a day or so to ensure stability. Then when the system becomes unstable, you can reverse that last change, and try oc'ing some other setting. But there's no doubt, yer running something too far out of spec :Q

 

[myocardia]

Popper, there's no way any of us, including you, will know if you're in need of a better psu, until you tell us your voltages with your processor under load. Use the program that came on the cd that came with the motherboard. It's in the Utility directory, and should have it's own directory (i.e.-- D:\Utility\USDM). Use it while you're running Prime95 torture test, and give us the results.

 

[PoPPeR]

oh ok. I'm an OCing noob so I don't really know what info was relevant and not relevant. My system was completely stable at 190/190, then at 195/195 there was two random reboots in 2 hours, then at 200/200 it just wouldn't load windows at all.

I can't run the prog now but I will when I get back. Thanks for the info

edit: I don't have too many things running off my PSU. only 1hd/1cdrw/1floppy.

 

[PoPPeR]

k nevermind i did have time. I ran the test for 10 minutes until I stopped seeing my CPU temp rise. Is 10 minutes enough for what we're trying to figure out here? I recall a bunch of people running it for 24 hours, but my voltages never went beyond a certain point.

Anyways, during the 10 minutes, my vcore fluxuated between:
1.696
1.728
1.744

never lower, never higher. After 10 minutes of the torture test at 190/190 my temps were CPU - 40 System - 26

 

[myocardia]

Well, what we really needed to know, you didn't tell us. What are your 12v rail and your 5v rail running? I.E.: what does USDM report for +5v and +12v? I used a CompUSA power supply, before I got my Antec TruePower, and couldn't OC at all with it. A good psu is pretty much a requirement for high overclocks, as evidenced here.

 

[PoPPeR]

oh ok. Well I digged through the logs, and at the highest CPU voltage here was the reading:

1/22/2004 2:39:30 PM - CPU FAN:3750, CPU Temp:40, System Temp:27, Vdd:1568, VCore:1744, Vdimm:2784, +5V:4865, +12V:12099, -12V:12610, -5V:5200, Vbat:2896, 5VSB:4824, 1074811170

here's another

1/22/2004 3:17:30 PM - CPU FAN:3750, CPU Temp:40, System Temp:27, Vdd:1568, VCore:1712, Vdimm:2768, +5V:4865, +12V:12099, -12V:12610, -5V:5200, Vbat:2896, 5VSB:4848, 1074813450

I stopped after about an hour, and here was my final log

1/22/2004 3:35:31 PM - CPU FAN:3668, CPU Temp:33, System Temp:27, Vdd:1568, VCore:1712, Vdimm:2784, +5V:4972, +12V:12038, -12V:12445, -5V:5149, Vbat:2912, 5VSB:4848, 1074814531

 

[PoPPeR]

ok after reading the thread you linked, and the person saying his antec was within 1%, I think i figured out what you wanted heh.

The lowest and highest 12V's i could find...

+12V:12099
+12V:11977
-12V:12445
-12V:12692

and the highest/lowest 5V's...
+5V:4865
+5V:4945
-5V:5300
-5V:5099

 

[myocardia]

Well, that rules out your psu. You realize that most people have had to do a mod to that board to be able to reach 200fsb, don't you? I found the official 8RDA thread (here), and you might want to look it over. Here's the link to it.

 

[pspada]

I've got a 8RDA+, with a 2600+ running at 11.5x200fsb stock voltage. Try your rig with one stick of ram and see what happens.