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Getting weird instabilities, thinking it's the PSU? Anyone wanna help me out?

stonecold3169

Platinum Member
After running stable for close to a year, my system has taken a new game up where under times of high CPU and memory usage, it will reboot.

Now, I AM overclocked, but a year ago I could run prime95 stable for hour after hour, and benchmarks never triggered it either. I've tried stress testing now even at not overclocked speeds, and sometimes it works fine, sometimes it powers down.

System specs:
Epox 8rda+ mobo
Barton 2500+ @ 3200+ speeds at default voltage (upping the voltage doesn't help a bit)
512mb of Kingston HyperX 3200a memory (using auto detect speeds, have also hand input modest speeds for it, tried stock and higher voltages)
Radeon 9700 pro
Turtle Beach Santa Cruz
DVD+-rw drive
dvd-rom drive
120gb WD SE hdd
Video capture card
3 case fans, 1 CPU fan

My temps are a tad high, but not enough to worry about really, I MAX under load at 52, but I've seen the rebooting occur at < 50 degrees before.

Voltage readouts according to mbm :
'
Core VDD: 1.584
VCore: 1.664
Vdimm: 2.720
+5V: 4.838 (this drops a tad under load, guessing it's the culprit?)
+12V: 12.038
Vbat: 3.104
5VSB: 4.969

This is all on an antec 350W smart power. I've tried doing fresh installs of windowsXP and I keep having teh same issues. Any ideas?
 
mate -- it could be simply that your case is dusty and requires cleaning 🙂
also check your cpu cooler is fitted properly
are you using stock cooler? the stock thermal pad can be getting crusty?

I have had a few 2500@3200 's and some of them do stay stable for hours only next week to crash after an hour, then the week after go back :Q
also cool your 8rda+ northbridge a bit -- the 8rda+ wasn't certified to run fsb 400 so it can get a little hot --

your problem is temp related not core related so instead of increasing voltages, try lowering them -- tests the core but will produce less heat
 
also forgot to add --- some particular games tax the system that extra little bit -- it may also be that !

btw -- it still may be your psu but what I said above doesn't cost a thing to test out 🙂
I don't think the 5v rail is to do with the cpu though -- u can try to pull some items out and try it that way to make sure
 
Originally posted by: xsilver
mate -- it could be simply that your case is dusty and requires cleaning 🙂
also check your cpu cooler is fitted properly
are you using stock cooler? the stock thermal pad can be getting crusty?

I have had a few 2500@3200 's and some of them do stay stable for hours only next week to crash after an hour, then the week after go back :Q
also cool your 8rda+ northbridge a bit -- the 8rda+ wasn't certified to run fsb 400 so it can get a little hot --

your problem is temp related not core related so instead of increasing voltages, try lowering them -- tests the core but will produce less heat


I doubt it's heat related... the temps are what they were before, and this just started happening now, after a year, using the same stress tests I was using before. This is with me using an alk-800a and AS3
 
well you might have to bit the bullet and get a new psu then .......
although you'll really be pissed off when you replace it only to find that it didn't fix it !
 
Originally posted by: xsilver
well you might have to bit the bullet and get a new psu then .......
although you'll really be pissed off when you replace it only to find that it didn't fix it !

hehe, exactly, That would be a really not fun day.

Only other thing I could think of was maybe my memory is bad? but it never crashes when I run memtest on it...
 
>>>
+5V: 4.838 (this drops a tad under load, guessing it's the culprit?)
>>>

4.838v idle ???
what does it say when you run prime95 etc...how much does it drop then ?
 
Originally posted by: flexy
>>>
+5V: 4.838 (this drops a tad under load, guessing it's the culprit?)
>>>

4.838v idle ???
what does it say when you run prime95 etc...how much does it drop then ?


When under load, this drops to 4.77, and that seems really low to me. I'm honestly not sure what gets power off the 5v line, I'll do a google search and check an dsee
 
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