Prime95 Vs SuperPI
- Thread starter wdEvA
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saying that though i found prime passed for over 12 hours before then fell over on 32m SuperPi, not sure what that says exactly but i would/do use both
wdEvA said:
Everyone has their own idea of stable. Some people think a few hours in Prime is enough, some people - such as me - wont settle for anything but rock solid stability which is why I do over 24 hours of Prime testing and then move onto Folding@Home.
F@H runs at 100% all the time and is very very sensitive to errors. Basically if you can go a week or more of running F@H with no issues then I would say your system is stable. I've had F@H running 24/7 for the last 2 months or so - no issues yet
SiriusB
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Prime95 for cpu and to some extent RAM - 24hrs at least for me
Memtest86+ - RAM - 24hrs for me
3Dmark01 - 3D and general stability - looped 24hrs
No rig has given me problems hardware related that passed that.
Memtest86+ - RAM - 24hrs for me
3Dmark01 - 3D and general stability - looped 24hrs
No rig has given me problems hardware related that passed that.
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I've got time to waste when clients and money are involved, saves me from unnecessary callouts, 99% of the time its their fault and a software error, not the hardware. Also i rather 3 days of torture and a troublefree rig forever after.
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Could be many things, too much FSB for it to handle, too tight timings, not enough VDIMM, Incompatiable with board, Bad RAM, Bad motherboard etc.. But if you overclock and its fine up to a certain point/speed/voltage/latency then starts erroring with anything higher, then yes, you might've reached the peak.
But if you overclock and its fine up to a certain point/speed/voltage/latency then starts erroring with anything higher, then yes, you might've reached the peak.
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UKTopGun said:
Your cpu may run that game for days but do something else and fall over, prime95 basically computes numbers that are known already and sets your cpu computing them and compares your computed data to the known value, any variations usually show somethings not right. So while you may think your pc is stable you might do something to trigger that instability, also funny things may happen like lost data, corrupt OS, random reboots, lockups etc.. that will manifest itself over time in a unstable rig even though on the face of it it might seem stable. Prime does a few things that overclocking needs: checks accuracy and heats things up, stresses components and drains a bit of juice since its more or less a full load on the system, so weak points may show up. Superpi is a rather short test, so instability caused by heat or undervoltage etc.. may not manifest itself in the time taken to complete it.
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SP2004 "is" Prime95 v24.14 iirc. With a front end GUI, SP2004-orthos is the multicore version.wdEvA said:
One of the main problems with a cpu that looks stable and isn't is that as files are written to disk, errors get written, these build up and sooner or latest something important like the MFT gets fubared.
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Soldato
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No, I just ran Quake 4 for a laugh and the cpu didn't even get warm, only a little over the idle temperature. Its not working that hard, try compressing a huge zip file, or encoding. That's the sort of thing that pushes it, excluding the torture programs. S&M a good one for a quick test.UKTopGun said:
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Also, if you have a multicore CPU there is a good chance your game will be running on just the one core. From experience I can tell you that more often than not one core is generally weaker than the other, meaning under stress it will be the first to fail.
Now, if your game is running on the stronger of the two cores, an instability or error may not show itself. No good when the very next program you run could bug out on the weak core and take something out with it!
SiriusB
Now, if your game is running on the stronger of the two cores, an instability or error may not show itself. No good when the very next program you run could bug out on the weak core and take something out with it!
SiriusB