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The sign of inevitable death

post #1 of 15
Thread Starter 
Hi folks,
I presently have no problems with my processor and in fact, thanks largely to the folks in overclock.net, I'm pretty much where I want to be or can be with my present processor and motherboard.

But I am wondering if there are any telltale signs that would indicate a CPU is about to reach its end. At this point I'm mostly interested in the characteristics that would be seen in an AMD processor.

Are there any visual cues or behaviors that can imply your CPU is starting on its way downhill several days or weeks before it actually happens?
Thank you
post #2 of 15
it doesn't hold it's overclock at the originally designated voltage, i.e. 4.0GHz @ 1.47vcore for example. You then have to bump up the voltage to 1.48 or 1.50 or if you have to lower the clock speed.

Edit: it's not exactly a sign that your CPU is "dying" per se, more like CPU degredation. It happens mostly when your overclock is sustained at high voltage with poor cooling, If you do start pushing 1.48+ volts through your 965 try to keep temps below a comfortable 55c-53c. The 125w Deneb cores have a thermal limit of 62c, but most of the members on here try to keep it way below that.
Edited by Kratthew D. Kraids - 10/18/11 at 1:22pm
    
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post #3 of 15
Thread Starter 
Wow, thank you. That's both good and bad news. I clocked my processor to 4 GHz at 1.5375v and I bumped the Northbridge up from 1.100v to 1.125v!

I'm getting great results at these settings. All except one of my fans are exhaust fans and my intake fan pulls cool air through the radiator and they all do a great job.

At this time my CPU will barely get to 60 C at its highest and only when I really pushed the workload through it. I fly FSX with many high-resolution add-ons in both planes and scenery. I try to maintain a 30/32 fps rate and only need to back down my scenery resolution sliders a notch or two when I fly through heavy weather over high-resolution scenery and dense populations.

Most of the time I can honestly say that the CPU averages about 52 C. Because my motherboard is locked all my overclocking is done through AOD, (and by trial and error), I got the best stability at 1.537v and 1.125v in the core and Northbridge when I run at 4Ghz.

I've tried running 4 GHz at lower voltages and incredibly, the temps were higher and the stability sucked. But don't get me wrong, I'm far from knowing everything I need to know about overclocking. I'm absolutely sure that there's a way to get the same results without the higher voltage if I could get into the bios.

But with a locked motherboard I can only go so far. I'm also assuming that lower voltages would lend to longer life spans and of course, even lower temps, and therefore is the reason why experienced Overclockers discourage high voltages.

Anyway thank you for the reply and I guess if I can continue to keep my processor cool I should be okay for a while.
post #4 of 15
1.53 is very high in my opinion you are very close to the volt limit. i would find a O.C. that is stable at 1.5 or lower. I hit 4ghz stable at 1.42.
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post #5 of 15
Thread Starter 
Wow, 1.42!? I don't think I was able to hold 3.8 with less than 1.45. I know I can hold 3.9 at 1.475. I was running that for several months but then again, I only recently got the whole system to stay cool enough to go and hold 4.

I'm sure you're all right about the high voltages so I'm going to revisit the 1.475 voltage and retry to hold 4.GHz. I honestly can't remember if I ever tried to do that since I cooled down the system with those extra fans and that H50.

But what about the Northbridge? should I return that voltage to the original 1.100v?
Thank you both for the help
post #6 of 15
you can try swapping the mainboard with a much better one. That should yield some better overclocking results with less heat.
    
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post #7 of 15
More bsod's occuring during what was once a stable overclock would be another sign.
post #8 of 15
Thread Starter 
Yes, I'm seriously looking at some mobos but just when I pretty much figured I was going to jump ship and pick up an i7 2600k, AMD comes out with the FX 8 core.

Of course this changes everything... maybe. It depends on what the future brings but the way things are when I exclude the new FX possibilities looks like this:
I need 4.5 GHz or better and at least 4 cores. If I spend the money for a mobo that handles an AMD I'm only going to have to spend it again for a board that handles Intel, (unless there's a good board the can handle either).

Of course I will need a bigger/better case and then transfer what I have over to the new case. But the bottom line is money. I'm coming near to the right moment but I still have a few months to wait. If in that time AMD pulls a rabbit out of their hat then I'll reconsider the AMD CPU.

I get absolutely better performance and LOWER heat when I unlock the cores via AOD and let them pull what they want when they want it. I believe that the first time I tried running my CPU that way, (I always used to run it locked wide open), the improvement was so huge that it is the single most effective thing I had done to date for playing FSX with all the High Resolution add-ons, no kidding.

Of course I'm looking to see what FSX may be able to do with 8 cores, but that many cores can be meaningless to many other games, (I only play FSX and some Black Shark).

There's a 3rd party add-on that can actually direct CPU workloads to any of up to 6 cores. I want to see if they'll update that program for the new 8 core CPU. I don't own it yet, (the program), but I'm watching to see what others say about it.

As it is, the present MSFSX is a real CPU hog. Microsoft is coming out with another flight sim called "Microsoft Flight", (no one knows when it will be released). That flight sim game is supposed to be coded better and require a lot less CPU and more GPU... we hope.
Thanks Again
post #9 of 15
Quote:
Originally Posted by wingclip View Post
I clocked my processor to 4 GHz at 1.5375v
That's....

I sure wouldn't want to run any more than 1.40v

Edit - Just so you know I'm not pulling something out of thin air, the AMD specified limit for your processor is 1.40v.
Edited by jlells01 - 10/18/11 at 10:14pm
post #10 of 15
Thread Starter 
I know that the overclock stats that were ran on the 965 took the voltage to 1.55 and a multiplier of 21 on stock air cooling. They got the 965, 125watt, c3 to 4.05 Gb and said they could go higher but they would lose stability.

In the end, their review said that they believed the 965 C3 was good for 4.05 without any special cooling. Now I'm not arguing with you about high voltage in fact, I agree and plan to start dropping it and see if I can still hold it together at 4 GHz.

But those tests/stats were done by a very popular mainstream online tester but I cannot remember who they are to save my life right now. As soon as I find them, (I'm sure it'll come to me when I stop trying so hard to remember), I'll post the link or the results.

All I can say right now is that I've been running 4 GHz at 1.5375 for 3 weeks or longer. And I had been running it at 3.9GHz at 1.475 and 1.4875 for at least 3 months or longer. No BSOD's and I just can't argue with the results as far as smooth frames and low temps under heavy loads.

I use CPUID HW & CPU-z and would be glad to put in a screen shot or two if you like. But as I said, I'm going to try to drop the voltage a little at a time and see what happens.
Thanks
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