Prime95 Question

[Ghuraba]

My PC has recently been randomly rebooting, espcecially in Condition Zero and then just general PC usage. My CPU, A643500 Winnie was prime stable over 12 hours at 240 x [email protected] since last May. I decided to run Prime95 for the first time in nearly 1 year. Needless to say it failed Prime95. The strange thing is that on multiple occasions it fails at around the 7 hours and 2 or 4 minutes using the 'In place large FFT's' test. Is this a software bug in the latest Prime95? I was using an older version 1 year ago to test stability with no failure at these settings. I lowered the cpu setting to the default 200 x 11 and the reboots are even more frequent and Prime fails quickly at the cpu's default settings. Very strange goings on.

Michael

 

[Minstadave]

My PC has recently been randomly rebooting, espcecially in Condition Zero and then just general PC usage. My CPU, A643500 Winnie was prime stable over 12 hours at 240 x [email protected] since last May. I decided to run Prime95 for the first time in nearly 1 year. Needless to say it failed Prime95. The strange thing is that on multiple occasions it fails at around the 7 hours and 2 or 4 minutes using the 'In place large FFT's' test. Is this a software bug in the latest Prime95? I was using an older version 1 year ago to test stability with no failure at these settings. I lowered the cpu setting to the default 200 x 11 and the reboots are even more frequent and Prime fails quickly at the cpu's default settings. Very strange goings on.

Michael

Try running memtest86+ and see what your memory is upto.

 

[str]

Has the temeperature in the case increased much? Could be dust etc causing problems. Also I read about running AMD 64s with a x.5 multiplier and allegedly it's not a good idea particularly due to memory slowdown or something. There wasn't much of an explanation as to why but maybe someone on here can shed some light on it.

 

[Ghuraba]

Yes I did read about the .5 multiplyer on DFI a few months ago but I've had no problems in the past. I'm gonna run Memtest now for a few hours. I gave it a quick run through and had no problems. I've just run Prime95 for nearly 11 hours using the 'Samll FFT's' option with no problem.

Michael

 

[roger-melly]

small ftt's = cpu
large ftt's = memory

running the cpu at default and it failing the large ftt kinda gives it away that theres something up with the memory. more voltage, slacker timings or its faulty.

 

[Ghuraba]

Thanks for the replies.

Well I left memtest running for 6 hours and no errors. I will increase the memory voltage and run the Prime 'large fft's' test and see if it fails. I still find it strange that it fails this test at a few minutes over 7 hours all the time.

Michael