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"Silent" CPU errors?

post #1 of 9
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I was having a conversation with a friend the other day who claimed to regret his previous overclock. He didn't submit it to what he deemed an acceptable stress test (ie., running LinX for multiple hours straight), and he claimed that the slight instability in his CPU caused a buildup of "silent errors", which ultimately eroded his OS installation, forcing him to reformat. Had he stress-tested for a longer time, LinX would have detected these abnormalities and he would've refined his OC. These silent errors mainly go by undetected, since they don't call for an error message to be thrown in any situation.

Now, I haven't heard of this before, and I can't find much online about it either. Does anyone know anything about these mysterious-sounding "silent errors" that, to my knowledge, cause instability in your OS over time? This isn't Intel-specific, but he was using an Intel processor at the time, so I figured this was the best place to ask.
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post #2 of 9
I've personally never heard of silent errors... I've heard people say that unstable OC's will corrupt an OS but I've heard others say that's not proven. What was wrong with his OS when he had to reformat?
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post #3 of 9
I have had a bad OC knock out a partition, but it was pretty sudden. Never heard of this before.
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post #4 of 9
yeah ive had a bad overclock damage my NTFS file system, but never had an OS degrade over time.
 
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post #5 of 9
Usually a bad ram overclock can cause this_ I've had this problem before, I've set my timings on my ram a little bit too tight and eventually causing my OS to corrupt over a period of a few weeks, bits and pieces of things wouldn't load and eventually it just won't boot.

But to hear that a bad CPU Overclock could cause this, it might be? but who really knows, I've had a lot of unstable overclocks, but I usually BSOD and end up raising voltages here or there to fix the issue.
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post #6 of 9
It's definitely true and it's why "eh, yea bro I did 10 minutes of IBT, it's good to go," just doesn't cut it. Not every error is going to cause a BSOD. When you've got a processing system that's outputting incorrect information and that information is being written to OS files, you most definitely can corrupt your OS install over time. I've personally had very unstable overclocks (while still in the processing of overclocking) ruin my OS install.
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post #7 of 9
Quote:
Originally Posted by AyeYo View Post
It's definitely true and it's why "eh, yea bro I did 10 minutes of IBT, it's good to go," just doesn't cut it. Not every error is going to cause a BSOD. When you've got a processing system that's outputting incorrect information and that information is being written to OS files, you most definitely can corrupt your OS install over time. I've personally had very unstable overclocks (while still in the processing of overclocking) ruin my OS install.
Yep, its true.

I mean you could prove it like this, if you open up Excel, and type 1 in cell, then drag that cell to 100,000 cells down, there is a small possibility that youll end up with the wrong result in the last cell, or an anomaly in one cell. That would be an illustration of a silent error. Not really silent when you see it. Same as failing a stress test.

We all get silent errors, the point of stress testing is to reduce the rate of a silent error to the smallest probability.
Edited by jasjeet - 4/18/11 at 3:47pm
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post #8 of 9
Does Prime95 stress testing tell you if you have any silent errors?
post #9 of 9
Quote:
Originally Posted by httuner View Post
Usually a bad ram overclock can cause this_ I've had this problem before, I've set my timings on my ram a little bit too tight and eventually causing my OS to corrupt over a period of a few weeks, bits and pieces of things wouldn't load and eventually it just won't boot.

But to hear that a bad CPU Overclock could cause this, it might be? but who really knows, I've had a lot of unstable overclocks, but I usually BSOD and end up raising voltages here or there to fix the issue.
^^This
It's usually bad RAM overclocks that hose a OS. Bad CPU overclocks will cause program errors and will be very visible to the user. It's not common to have "Bit rot" from non crashing silent CPU instability these days.

Most chips are good at catching errors and BSODing for you (which is actually doing you a favor).

And what's the fascination about running LinX all day and night now? LinX was not designed to be run at those levels. When it first came out, 10 to 20 runs were sufficient (one hour max), and repeated runs at high overclocks could and *would* degrade a CPU (That's exactly what happened to my QX9650), thanks to the non real world temps put through the silicon at high voltages. Now, everyone wants to run LinX as casually as people change their socks...

I mean, running LinX at lower vcores and keeping the max load temps under 75C is fine and all, but the higher you raise that vcore, the lower you have to keep your temps, before you start getting silicon damage.
Edited by Falkentyne - 4/18/11 at 5:00pm
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