CPU Fails Prime95

[sep]

Hi all, I've got an odler CPU and MB that keeps crashing on me. I thought it was heat related issues so I got a Corsair H50. Temps don't go over 37 during Prime95 testing but it doesn't last long. About 5mins in cores start showing errors. Periodically my system will Blue Screen. I can't plan a game for a long time either. ARGH! I really didn't want to have to get a new rig yet. I verified Memory to be working correctly.

MB(ASUS P5N32-E SLI) and CPU (Q6600)

Anyone know if I can absolutly say it's my CPU?

 

[sangyup81]

if it was a complete cpu failure, your system wouldn't even turn on

how about raising volts?

 

[BababooeyHTJ]

I would be pointing my finger at the motherboard. The 680i isn't exactly famous for its reliability.

 

[sep]

sangyup81 - I'm not overclocking!

BababooeyHTj - I do have another board I can try....Guess that will tell me CPU or MB.

 

[Avalon]

Run a memtest so you know if you need to focus on CPU/MB or if it's simply memory related. Prime95 will use some memory depending on which setting you choose.

 

[Seero]

Hi all, I've got an odler CPU and MB that keeps crashing on me. I thought it was heat related issues so I got a Corsair H50. Temps don't go over 37 during Prime95 testing but it doesn't last long. About 5mins in cores start showing errors. Periodically my system will Blue Screen. I can't plan a game for a long time either. ARGH! I really didn't want to have to get a new rig yet. I verified Memory to be working correctly.

MB(ASUS P5N32-E SLI) and CPU (Q6600)

Anyone know if I can absolutly say it's my CPU?

There can be many issues other than heat which cause prime95 to fail. In fact, heat only cause failure indirectly.

In my option
The usual cause of failure is under voltage and memory error. I know that you ain't overclocking, but your PSU may have degraded due to its age and can no longer sustain the wattage needed by the system. Other than PSU failure, aged capacitors also increase the load of the system will cause under voltage. PSU may also be damaged by bad caps from mobo, or anything connect to it, and a damaged PSU can damage anything that connects to it. Instead of burning in smokes immediately(it happens sometimes), the system simply becomes unstable.

To isolate the problem, down clock the CPU by half and loosen RAM timing and run the test again. If pass, then it is likely to be under voltage. If still fails, then it does NOT mean it can not be other under voltage related problems. Instead of testing all cores, test it with 1 core (unless you play with affinity, all cores will be used alternatively), and use small FFT to isolate memory problem.

Suppose under voltage is the problem, other than getting a new system, you can inspect the top of each capacitor and check for liquid leaks and popped out tops on the mobo. If you find lots of leaked caps, then you either have to replace ALL of the bad caps within the system, or replace the mobo and PSU. An alternative is to buy a high end PSU will lots of juice and see if it does the trick by brute force.

my suggestion
If a new system is an option, go for it. Otherwise, drop 20 bucks in a shop where it does repairs and have them figure it out. They have lots of tools for diagnostics.

 

[sep]

I swapped motherboard....let it run for 4 hours and without any failtures. So I'm guessing it was the motherboard. After a couple minutes last night the darn thing failed on me with new motherboard. I swapped memory with another 4gb of ram I have and it's running fine without issues. Darn, now I'll have to switch back to my other board because this boards auto in the rear doesnt work...have to use output on top of case (mb header). Argh! I even ran mem test on this ram for hours and several passes and never found errors.