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Problems with Prime95

A

arod324

Golden Member
I just overclocked my computer by another 100 mhz, and now prime95 will not work it says "error: round off 0.499995913>.40. Possible hardware failure, consult the read me file. Execution halted." Does this mean that my cpu does not have enough juice right now?
 
It means that your cpu isn't stable enough to run prime 95, are you experiencing stability problems with other apps?
 
Okay, I just went back down to 900, and Prime95 is working fine now. I ran 3dmark 2k and seti@home perfectly fine a gig though. I'll try bumping up the voltage when I get my new fan (I have the crappy coolermaster right now and it was running @50C for a bit.... but now it is around 45C full load @900.
 
seti@home doesn't like getting overclocked much either. starts doing weird things like returning WUs in a couple minutes because it corrupts them. wonder how tolerable dnet is to overclocking?
 
dunno anything about Prime95, but thanks for the hard drive 😉
ps. did you get your MO ?

yep coolermaster has to be the crappiest hsf for socket A. everyone seems to hate them
replaced mine with a modded pal35 😉

i need to update my mobo bios (A7V) before I can oc my Tbird though.
cheers,
joinT
 
If I OC the system too much, Prime95 is the first to report that.. makes it a good OC testing tool. other distributed computer software usually didn't pick up the errors, so I was wonder whether is those software didn't detect it, or they have better design then Prime95...
 
I find that SETI often doesn't pick out a slightly unstable system ,but UT does & you can have fun whilst testing 😉
 
One Prime95 error that is occur, is it says "SUMOUT error occured. Waiting five minutes before restarting." I know that a previous error I had meant that my cpu was unstable. Does this also mean that is unstable? When I quit out of that program, and come back in, it sometimes goes back to where it was before the "sumout" error occured. Other times it continues to show the SUMOUT error. Any ideas?
BTW it will work perfectly fine @1 gig, but falters at 1050. (please don't tell me that my chip has hit it's limit) :-(
 
I'm puzzled on the sumout error as well.. I got couple K6-2 450 that'll ocassion pop out the error, and the system is perfectly stable. but I also got that error when I'm trying to OC my K7 too much.

My guess is that since Prime95 codes are pretty much assembly language, it's probably optimized to the max(timing and everything), where it'll caught some minute errors in the system. SETI@home's client is pretty much based on C, and compiled with a off the shelf compiler and not overly optimized(on timing issue). which it might be either more tolerant, or more ignorant... both are doing pretty much teh samething, calculating FFTs.
 
Here is the testing statement for one of the gauranteed overclocking vendors.


<< Our strenuous testing includes the ZD Winbench99 benchmarks, Prime 95 torture test and Quake III loops. We guarantee your combo to run at the listed speed. >>


It would seem that Prime 95 is not very forgiving, making it a good test platform.
As for the K6-2 errors, many of the Super 7 chipsets are not as good as they could be. I seem to remember reading that Anand would expect double the crashes from a Super 7 system than a BX based system. In my own limited experience, I have been happier with the Intel BX, LX, ZX, and HX chipset boards than any others.

Maybe running Prime 95 on these systems would point out any weaknesses...

viz
 
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