Well I did a little testing about 3 days ago, and I found something very interesting.....
After extreme loading I had a restart of the computer. I was set at 2.66ghz(1.57v) w/ 183divider cas 2.5,3,3,8 (2.85v)...I clocked lower but left ram the same and it was fine for half the day then boom it happened again....I was what!!! I lowered the ram timings to cas 2.5,4,4,10 on a 166 divider and I still had one....
I watched the power supply and it seemed fine.....
I then downclocked to 2.61ghz (known stable) and 133 cas 2,2,2,6 (known stable)...When I do this I usually drop the vcore to 1.5set with 3.3% for 1.47v...set it and left the vdimm at 2.85v where it been for the above.....I even had a restart there while running FH, TMPGenc encoding an AVI to m2v and playing WMP10...I was like WTF!!!!
I mean I had found 2.66ghz w/ 183 divder and cas 2.5,3,3,8 settings tweaking and benching (as you know from my thread) last week and even ran memtest (briefly) and prime95 for 24 hours....I knew it was stable cpu....However I had not tested it so thoroughly....Actually what I remembered was test #1 of prime95 does not test ram much and I really hadn't stressed the ram in the windows environment for extended period....superpi 32mb just doesn't cut it...
But now I was running lower cpu speed and still having an issue...
I then reached my hand in the case and felt the ram...very hot to the touch....possible issues??? 80mm fan positioned as exhausting but close to that position suddening started vibrating (going out) back on sunday...so I removed it. This may have been enough to change the air flow and the memory (Gskill) with 2.85v (some say the MSI overvolts at this setting to 2.9v) and no heatspreaders may be overheating....
So I leave it at 133 divider but drop the timings to cas 2,3,3,6 and drop the vdimm to 2.7v......run memtest in windows environment...seems fine..chips feel a bit cooler.....I redirect a case fan so it blows some air up in that area....
I then decide to...WTH....bump it back up to 166 divider cas 2.5,3,3,8, but I left it at 2.7v....I also set it back to 2.66ghz...ran 15 passes of memtest monday morning, and additional 50 test each on test #5 and #6....
Bottom line!!! 60+ hours later FH running non-stop, encoded 2 more episode with tMPGenc....burned 4 DVDs....played ample movies and basically stressed the crap out of it.....NO problems....Except now I run it with 2.7v instead of the 2.85v.....I still need to test it back at 183 divider with A64 tweaker with the same settings....
What I guess I really forgot to test was did I actually neeed that much vdimm to run those speeds. Now I have to question my memory tweaking to date cause as I clocked it high with 1:1 ratio I would get freezes and or restarts. I usually just thought it was the limit and/or raised the vcore and the vdimm...This may actually have just been counterproductive. I still dont think it will do 1:1 at 296HTT, but just running lower vdimm is a better thought.
Edit: I am going to let this run the rest of the week out running FH and still encoding, playing video, burning dvds, backinp up files, downloading movies, etc.....
After extreme loading I had a restart of the computer. I was set at 2.66ghz(1.57v) w/ 183divider cas 2.5,3,3,8 (2.85v)...I clocked lower but left ram the same and it was fine for half the day then boom it happened again....I was what!!! I lowered the ram timings to cas 2.5,4,4,10 on a 166 divider and I still had one....
I watched the power supply and it seemed fine.....
I then downclocked to 2.61ghz (known stable) and 133 cas 2,2,2,6 (known stable)...When I do this I usually drop the vcore to 1.5set with 3.3% for 1.47v...set it and left the vdimm at 2.85v where it been for the above.....I even had a restart there while running FH, TMPGenc encoding an AVI to m2v and playing WMP10...I was like WTF!!!!
I mean I had found 2.66ghz w/ 183 divder and cas 2.5,3,3,8 settings tweaking and benching (as you know from my thread) last week and even ran memtest (briefly) and prime95 for 24 hours....I knew it was stable cpu....However I had not tested it so thoroughly....Actually what I remembered was test #1 of prime95 does not test ram much and I really hadn't stressed the ram in the windows environment for extended period....superpi 32mb just doesn't cut it...
But now I was running lower cpu speed and still having an issue...
I then reached my hand in the case and felt the ram...very hot to the touch....possible issues??? 80mm fan positioned as exhausting but close to that position suddening started vibrating (going out) back on sunday...so I removed it. This may have been enough to change the air flow and the memory (Gskill) with 2.85v (some say the MSI overvolts at this setting to 2.9v) and no heatspreaders may be overheating....
So I leave it at 133 divider but drop the timings to cas 2,3,3,6 and drop the vdimm to 2.7v......run memtest in windows environment...seems fine..chips feel a bit cooler.....I redirect a case fan so it blows some air up in that area....
I then decide to...WTH....bump it back up to 166 divider cas 2.5,3,3,8, but I left it at 2.7v....I also set it back to 2.66ghz...ran 15 passes of memtest monday morning, and additional 50 test each on test #5 and #6....
Bottom line!!! 60+ hours later FH running non-stop, encoded 2 more episode with tMPGenc....burned 4 DVDs....played ample movies and basically stressed the crap out of it.....NO problems....Except now I run it with 2.7v instead of the 2.85v.....I still need to test it back at 183 divider with A64 tweaker with the same settings....
What I guess I really forgot to test was did I actually neeed that much vdimm to run those speeds. Now I have to question my memory tweaking to date cause as I clocked it high with 1:1 ratio I would get freezes and or restarts. I usually just thought it was the limit and/or raised the vcore and the vdimm...This may actually have just been counterproductive. I still dont think it will do 1:1 at 296HTT, but just running lower vdimm is a better thought.
Edit: I am going to let this run the rest of the week out running FH and still encoding, playing video, burning dvds, backinp up files, downloading movies, etc.....
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