davemonkey Posted March 18, 2013 Posted March 18, 2013 lol that was the first thing i did , bought one last friday an ocz700mxsp Share this post Link to post Share on other sites More sharing options...
El_Capitan Posted March 19, 2013 Posted March 19, 2013 This is a perplexing situation, that's for sure. Do you have the latest BIOS? The only thing I would try is to see if it's OS related. If you can create a Linux USB boot drive and see if the overclock holds and doesn't crash there, then you can target your Windows OS as part of the issue. Share this post Link to post Share on other sites More sharing options...
wevsspot Posted March 19, 2013 Posted March 19, 2013 I'm in agreement with El_Capitan. Make sure you have downloaded and flashed the latest BIOS. And even if you have it wouldn't hurt to reflash and reload optimized defaults and start from there. To put any power supply questions to rest, grab a multimeter and check your 12v rail with the computer running under load (OCCT, Linx, Prime95 etc.) and make sure that the 12v rail stays within +/- 5% tolerance. Personally I doubt it is your power supply, and am leaning more towards the BIOS or an issue with Windows. If it were me I'd; 1) confirm latest BIOS - reflash if needed 2) check 12v rail with PC under heavy load 3) reinstall a fresh copy of Windows If none of those resolve the problem - then you could reasonably suspect that it is an issue with the video card itself. Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 19, 2013 Posted March 19, 2013 strange things are afoot ! i put my 9800gt in my system as well as my gtx650 and my overclock is fine with both cards in , but as soon as i remove the 9800gt it all goes to crap again !! Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 19, 2013 Posted March 19, 2013 i forgot to mention my bios is the latest one too Share this post Link to post Share on other sites More sharing options...
wevsspot Posted March 19, 2013 Posted March 19, 2013 That is weird. Same result regardless of what PCIe slot you put the GTX650 in? Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 19, 2013 Posted March 19, 2013 yes , but if i add my 9800gt to either slot it works fine with both in , overclocked to 3.52 ghz Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 19, 2013 Posted March 19, 2013 update ! i have increased my cpu frequency as my bios calls it from 200 to 220 and im running at 3.412gig . windows however reports it as 3.1 but i verified with cpu-z and cpuinfo version 1.3 at 3.412Ghz so wtf is going on lol im going to stress test now and hope i dont smell smoke Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 20, 2013 Posted March 20, 2013 tried a stress test but its not stable , so i am at a loss as what the hell is going on Share this post Link to post Share on other sites More sharing options...
wevsspot Posted March 20, 2013 Posted March 20, 2013 Before spending a lot more time (and potentially running out of return or exchange time) I would probably send the card back. By your description it is the only thing in the system that has changed, and you've exhausted everyone's suggestions of potential fixes. If the next card does the same thing................ well at least you have ruled out the video card being the problem. Share this post Link to post Share on other sites More sharing options...
davemonkey Posted March 20, 2013 Posted March 20, 2013 the card works fine , i tried it in my other pc and can overclock the tits off it , as a hunch i downgraded my bios to 1 previous and although it let me overclock it would go into a boot loop on restart . im coming to the conclusion that it is a motherboard issue tied in with some kind of irq issue . but the real strange thing is , if i chuck in my old 9800gt in the second pci-e 16 slot , the computer overclocks fine and runs totally stable , so i might just leave it in there ? Share this post Link to post Share on other sites More sharing options...
VaporX Posted March 20, 2013 Posted March 20, 2013 Welcome to the joys of overclocking Share this post Link to post Share on other sites More sharing options...
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