Which stress tests should I run in Prime95 test an Athlon 64 X2 CPU

[Link19]

I have been running two instances of Prime95 doing the Small FFTs stress test with one instance for each CPU core to ensure my overclock is perfectly stable. So far, everything has passed without errors for both cores. Now, to ensure my Athlon 64 X2 3800 is perfectly stable, is that the only stress test I should run?

Another words, which stress test should I run and for what? And which Prime95 stress tests are necessary to run two instances of with one instance being for each CPU core?

Why would you want to run In-place Large FFTs?

Is running MemTest all that is needed to fully test my RAM in my overclock setup?

How long should I stress test it for to ensure it is rock solid stable?


Also I must ask this as well, I am keeping track of the CPU time in Task Manager for each Prime95 process. I started each instance within one second of each other and the CPU time in Task Manager for each Prime95 process was almost exactly the same as they kept ticking upwars when they first started stress testing, with one process only being one second less in CPU time than the other. Now, after Prime95 has been running for almost 8 hours, I notice the CPU time for each instance are now separated by more than a minute of total CPU time. Sometimes that fluctuates and both instances are separated by only 20-50 seconds apart in total CPU time. Is that normal and just part of the way that dual instances of things will go even at the same clock speed? Or is that something to be concerned about and means that one CPU core will eventually fail the Prime95 test?

Last thing I must ask. I noticed that during one of the FFT tests, one instance of the same FFT length actually performed 6 Lucas-Lehmer iterations while the other instance only did 5 before they passed that FFT Length. I only noticed this once. Is that normal, or something that means one core will eventually fail?

Right now, I still have two instances of Prime95 running and nothing has failed yet.

 

[biostud]

just use your computer since you have stressed it with prime95, and if you don't get lockups, BSOD or random restarts your computer is fine. If you start getting problems you can always go back and test your setup .

 

[Hacp]

Now test your memory with Memtest.

 

[Link19]

I just want to make sure it is rock solid stable before I start using it. I have learned that lesson from the past. I stress tested it thinking everything was stable and then all of a sudden, I started to get occasional random BSODs. Sometimes my system would seem perfectly stable for a long time (even when doing CPU and RAM intensive tasks), while other times outof no where, I would get a BSOD.

 

[Shimmishim]

this is the test methodology of someone else but...

6 hours of small fft
6 hours of large fft
3 hours per 1024 meg of ram you have (loop test #5 and #8)
do a few loops of 32M superpi.

if it can do all that, then your cpu should be stable!