Silas13013 Posted October 19, 2011 Posted October 19, 2011 So I had my 1075T on a mild OC of 3.75GHz and decided that was enough for the time being. I ran prime95 for 24 hours with no errors and decided that was good enough. A few months went by and no problems. However, over the past few weekends I have had to be away from my computer for several days at a time and I began to notice around the 3 day mark that my folding clients would stop working due to an unstable core. I ran prime95 for 3 days and errors started showing up around the 65 hour mark. So I rolled back to the stock clock of 3.0GHz and let it run for a week solid with no errors. Rig specs: Phenom II 1075T motherboard: asus m4a79t deluxe ram: G skill ripjaw X series 1600 hard drive: Crucial 128g SSD video cards: 2 Sapphire 6950's PSU: Antec 750W Now I don't remember my exact settings for my former OC but I do remember the vcore was fairly high at 1.4125v. And since the processor is not unlocked, the bus speed was 255. So my question is, did I do something wrong during my OC or is my chip simply a dud in terms of OC capabilities? Share this post Link to post Share on other sites More sharing options...
Black64 Posted October 19, 2011 Posted October 19, 2011 What is your CPU cooler and what are the temps. This sounds heat related. Share this post Link to post Share on other sites More sharing options...
Silas13013 Posted October 19, 2011 Posted October 19, 2011 Cooler is 212+ and temps, even under 100% load never exceed 40C. It's fairly cold where I live right now (well some people think it's cold, I love it) and even mid 30's on my CPU is fairly high. Share this post Link to post Share on other sites More sharing options...
SpikeSoprano Posted October 19, 2011 Posted October 19, 2011 Have you ran memtest on your pc, with a high fsb your memory was running quite high also. those volts don't really seem that high for a phenom. Share this post Link to post Share on other sites More sharing options...
Silas13013 Posted October 19, 2011 Posted October 19, 2011 Memtest passed 3 cycles with no problem, although I have heard that 3 cycles isn't enough. Should I try again for more cycles? Share this post Link to post Share on other sites More sharing options...
SpikeSoprano Posted October 19, 2011 Posted October 19, 2011 Memtest passed 3 cycles with no problem, although I have heard that 3 cycles isn't enough. Should I try again for more cycles? It wouldn't hurt to run it for an hr or so just to be sure, or each stick seperately. Share this post Link to post Share on other sites More sharing options...
Waco Posted October 19, 2011 Posted October 19, 2011 Did you give the memory controller and extra voltage when OC'ing? Share this post Link to post Share on other sites More sharing options...
Silas13013 Posted October 19, 2011 Posted October 19, 2011 Did you give the memory controller and extra voltage when OC'ing? IIRC, I underclocked my ram and left the voltage for it alone. It was running at 1333 instead of 1600 when the CPU was OC'd Share this post Link to post Share on other sites More sharing options...
SpikeSoprano Posted October 19, 2011 Posted October 19, 2011 IIRC, I underclocked my ram and left the voltage for it alone. It was running at 1333 instead of 1600 when the CPU was OC'd Well if the memory was underclocked that was probably not the problem then. Share this post Link to post Share on other sites More sharing options...
El_Capitan Posted October 20, 2011 Posted October 20, 2011 Probably the northbridge not staying cool enough with the overclock and sustained loads. Dedicate a fan to the northbridge heatsink. Share this post Link to post Share on other sites More sharing options...
Silas13013 Posted October 20, 2011 Posted October 20, 2011 I bumped my processor back up to 3.75GHz and started folding again to see NB temps. Looks like I'm getting about 37C after 10 minutes of folding with the ambient temperature hovering around 11C (about 50F) Is that unusual or is that an indicator the NB gets way too hot? Share this post Link to post Share on other sites More sharing options...
Waco Posted October 20, 2011 Posted October 20, 2011 37 is well within reason...but when your case temperatures rises (and it will) you're looking at a minimum of 26 degrees over your ambient case temperature on the northbridge. Share this post Link to post Share on other sites More sharing options...
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