ziddey
01-21-2007, 03:32 PM
I'm running into a little bit o a pickle. Initially, I set vcore to 1.59v to see if system was stable at 8x450=3600. I ran blend test for 24+ hours and it was fine. Actual load vcore was somewhere around 1.52 or something if I recall correctly.
Then I dropped vcore down to 1.5v set in bios, for 1.44v under load and did small fft test. It went for 27 hours without issue.
But the system wasn't really too stable. 3dmark loops would crash it. Programs would randomly crash. I tried large fft and it'd always crash around 2 hours or so. So I bumped vcore up to 1.55v for 1.46v under load and passed 14 hours of large fft. I was about to cancel it and say it was all good, when the computer took a :banana::banana::banana::banana: with machine_check_exception. Ok.. Now I'm up at 1.575v (getting real close to original 1.59, agh). Testing large fft again, guess I'm going for full 24hr this time.
So my question is, how come small fft passes everytime? Does it not span all the l2 cache of c2d's?
I know it's said that large fft tests ram too. But my ram used to be able to run at 500 4-4-4-12 at 2.3v easily. That said, it can't do it anymore for some reason, so I'm at 450 5-5-5-15 2.3v. And when I did 24 hours of blend test with this setting (and only 2.1v) it passed fine. I also memtested for about 16 hours, and looped test5 for about 3 hours and it was absolutely fine.
edit: Also, I had another question, probably more suited for posting in the mods section but..
I have both a rev1 and rev2 ds3. On the rev1, I did the vdroop mod, which completely removed droop. However, with the rev2, droop isn't too too bad, although it's still there. However, there's another issue with the rev2. It consistently is way lower than the set vcore. For instance, I'm at 1.575v set in bios, and am getting about 1.52v idle and 1.49-50v under load. I take it that's not droop. Anyone know of any ink/pencil mods to address that? The circuitry was changed from rev1 to rev2, so the droop mod isn't the same. I'm not too good at reading the writing on the board, so I'm not sure where exactly the resistor for droop moved to (I can think of two possible spots). Maybe I'll take a picture sometime and post it
Then I dropped vcore down to 1.5v set in bios, for 1.44v under load and did small fft test. It went for 27 hours without issue.
But the system wasn't really too stable. 3dmark loops would crash it. Programs would randomly crash. I tried large fft and it'd always crash around 2 hours or so. So I bumped vcore up to 1.55v for 1.46v under load and passed 14 hours of large fft. I was about to cancel it and say it was all good, when the computer took a :banana::banana::banana::banana: with machine_check_exception. Ok.. Now I'm up at 1.575v (getting real close to original 1.59, agh). Testing large fft again, guess I'm going for full 24hr this time.
So my question is, how come small fft passes everytime? Does it not span all the l2 cache of c2d's?
I know it's said that large fft tests ram too. But my ram used to be able to run at 500 4-4-4-12 at 2.3v easily. That said, it can't do it anymore for some reason, so I'm at 450 5-5-5-15 2.3v. And when I did 24 hours of blend test with this setting (and only 2.1v) it passed fine. I also memtested for about 16 hours, and looped test5 for about 3 hours and it was absolutely fine.
edit: Also, I had another question, probably more suited for posting in the mods section but..
I have both a rev1 and rev2 ds3. On the rev1, I did the vdroop mod, which completely removed droop. However, with the rev2, droop isn't too too bad, although it's still there. However, there's another issue with the rev2. It consistently is way lower than the set vcore. For instance, I'm at 1.575v set in bios, and am getting about 1.52v idle and 1.49-50v under load. I take it that's not droop. Anyone know of any ink/pencil mods to address that? The circuitry was changed from rev1 to rev2, so the droop mod isn't the same. I'm not too good at reading the writing on the board, so I'm not sure where exactly the resistor for droop moved to (I can think of two possible spots). Maybe I'll take a picture sometime and post it