rottendumpling Posted December 22, 2006 Posted December 22, 2006 I've been having a problem with 3DMark 2001SE stability and it's starting to drive me nuts. Prime 95 blend on both cores passes over 24hrs, memtest runs overnight without fuss, OCCT passes, SuperPi has no problem BUT sometimes when I loop 3DMark 2001SE it'll hard lock. The frustrating part is that it will do this without any sort of diagnosable pattern. Some nights I'll loop it for 24hrs without any issue, then restart my computer, loop it again, and it'll hard lock after 10 minutes. Or sometimes I'll cold boot and loop it only to experience an immediate hard lock. :mad: I think it has something to do with my secondary ram timings. I attached a screen shot of A64 Tweaker in hopes that someone can shed some light. Share this post Link to post Share on other sites More sharing options...
laserred Posted December 22, 2006 Posted December 22, 2006 See if you can get Praz or CPDMF to reply, they are very good on memory timings. Just looking, compared to my 265-270MHz settings (i know they are different memory/mobo/cpu, but for reference), your secondary timings look loose, but then on the right side of the page I have things like 16 Idle Cycle, R/W bypass at 8x, Bypass max at 4x, Read preamble at 5.5ns where yours are tighter. Fiddling with these might help, but honestly, the random problem makes me want to say it's probably PSU-related. I know yours meets the minimum requirements, but Prime, Memtest, and SuperPi create relatively steady loads on the PSU. With your hardware it might be close, and I'd think 3DMark was more dynamically loaded, changing rapidly from high to low loads and back, and might be your problem. The GameXstream 700 is available now for around $100. Let's see what others think. Share this post Link to post Share on other sites More sharing options...
schoolslave Posted December 22, 2006 Posted December 22, 2006 Sounds like PSU or RAM timings. I'm leaning towards PSU tho. Share this post Link to post Share on other sites More sharing options...
red930 Posted December 22, 2006 Posted December 22, 2006 maybe its user error like your location Share this post Link to post Share on other sites More sharing options...
rottendumpling Posted December 22, 2006 Posted December 22, 2006 I'm ruling out the PSU because I've been testing an OCZ GameXStream 700W to no avail; still getting the random hard lock with 3DMark. I notice the biggest factor in stability so far is DRAM Drive Strength and DRAM Data Drive Strength. Right now I'm looping 3DMark 2001SE with the former set to 7 and the latter set to 3. Share this post Link to post Share on other sites More sharing options...
prosser13 Posted December 22, 2006 Posted December 22, 2006 Try DRAM Drive Strength = 10 and DRAM Data Drive Strength = 3 Share this post Link to post Share on other sites More sharing options...
rottendumpling Posted December 22, 2006 Posted December 22, 2006 Try DRAM Drive Strength = 10 and DRAM Data Drive Strength = 3 DRAM Drive Strength goes up to 8... Share this post Link to post Share on other sites More sharing options...
rottendumpling Posted December 22, 2006 Posted December 22, 2006 maybe its user error like your location That's...helpful... Share this post Link to post Share on other sites More sharing options...
prosser13 Posted December 22, 2006 Posted December 22, 2006 Whoops - sorry - mine goes up to 10 You tried 8? Share this post Link to post Share on other sites More sharing options...
rottendumpling Posted December 22, 2006 Posted December 22, 2006 Whoops - sorry - mine goes up to 10 You tried 8? Yeah, tried 8 and 3, didn't like it tho. It ran for 6hrs with those settings but I rebooted and tried to loop again only to hard lock after a few minutes. Share this post Link to post Share on other sites More sharing options...
rottendumpling Posted December 23, 2006 Posted December 23, 2006 I played around with the timings all day and ultimately I had to raise vcore from 1.425 * 110% (1.568 vcore) to 1.40 * 113% (1.582 vcore). Oddly with a vcore of 1.568, Prime95, SuperPi, OCCT, and Memtest can run all day stable but 3DMark loops cause random hard lock ups. With the new vcore of 1.582 I've been able to run all those tests without any hiccup. I guess the memory controller is a bit finicky? Share this post Link to post Share on other sites More sharing options...
laserred Posted December 23, 2006 Posted December 23, 2006 That seems like an awful lot of voltage on air cooling, especially for only 2.7GHz. What kinda temps are you seeing in CoreTemp? Share this post Link to post Share on other sites More sharing options...
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