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What is the best "torture test" out there to determine stability??

Try calculating 150000 factorial on the Windows calculator. I tried it in win2k on an Athlon 1466, it doubled my processor temp from 27 degrees C to 54 degrees C before locking up. This on a machine which had exhibited perfect stability otherwise.

Marty
 
mmmmmm... for those who haven't had any math for several years... and are looking to kill a little time at work... explain this "calculating 150000 factorial on the Windows calculator"
 
"Try calculating 150000 factorial on the Windows calculator. I tried it in win2k on an Athlon 1466, it doubled my processor temp from 27 degrees C to 54 degrees C before locking up. This on a machine which had exhibited perfect stability otherwise."

I didn't know Windows had a built-in Prime95 simulator. 🙂 Very interesting.
 
Rc5 is not that great of a test,i seen rc5 run fine but Prime95 came up with errors on the same system where RC5 ran fine.

I say use Prime95 torture test.
 
"3.1893976463073495440874313886556e+711272

It peaked out at 46C with a Tbird 700@850."


Dude, how long did it take you to finish? I grew quite impatient after having to re-click the continue button again and again. 🙂
 
Hey, cool test! I cancelled the operation after I had to choose between "continue or stop" about the 10th time. My CPU temp at the time was 50C. That's on a 1Gig TB @ 1105. That's the same CPU temp that I see while playing UT. Running the Prime95 torture test for 24 hours straight only gets me about 45C. Interesting.
 
I like to run Prime95 while looping Quake 2 crusher.dm2 at 1024x768x32 in a desktop window.

I used to run Prime95 and Sandra burn-in but Sandra does not leave ANY cpu cycles for Prime95, after hours of looping its still sat at the first Test. Plus, looping Quake 2 means the graphics card heats up too.
 
if you want something that will test the system as a whole i find 3dmark2001 to be very good if you loop it...it seems to be very sensitive to video card, memory, and cpu overclocks. if you want to isolate the cpu, i think prime95 is the most stressfull, it seems to find errors that don't show up with any of the other popular distributed computing programs (i.e. seti, ud, etc...). the thing with distributed computing tests, however, is that you can't really run those AND something else (like quake3, 3dmark, another distributed computing program, etc...) because they are meant to use the unused cpu cycles. basically, lets say you run seti and rc5, one of them will take 100% load and the other will "yield" because there doesn't seem to be any unused cycles (the other program is using them all).
 
not rc5 since it doesnt test wheter there was any error in the calculation.
prime95 torture test in the background while looping quake3 in timedemo mode with a massive demo. (i like the one with too many people on map #17 with god mode). if it wont crash - its stable. i think 3dmark2k1 is ok too but it crashes on stable systems (i mean stable systems).
dont forget to have mbm5 logging the temp every shortest available period of time, and having the task manager (if in win2k) open while you do that is a bonus. having winamp play wma files is a bonus too. shut down speakers (or not. your preference) and go to sleep. after wake up, go check if still working...
 
Could someone spell out the calculator test step by step? I can't seem to piece it together from what I read here. Thanks.
 
Make sure you are in scientific mode, then type in 150000, then press the n! button. I think, but I'm not sure, that it will continue to calculate while it waits for you to decide because I only pressed continue about 3 times and then I left for about 5 min and I came back and it was done.
 
WOw that calculator test pushes the CPU!Running Prime 95 3dMark or anything similar temp never gets above 40c but this pushed it up to 48c!!!
 
Guys, how are you determining your CPU temp? Are you simply rebooting the PC and going into the BIOS to see the temp, or do you have a windows app that can tell you in real time?

Thanks.
 
pg19,

We are looking at it realtime with a utility that came with the board cd or you can use motherboard monitor.
 
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