- Joined
- Mar 19, 2004
- Location
- San Francisco, CA
So I've done both the Vdimm mod and the droop mod for the P4P800. I was originally going to only do the droop but since I was in there I figured "hey, what the hell, we're here and opened wide, lets take care of this on all ends..." ..... no snickering allowed.
The problem is that I get random restarts now, even when only at 3.3G (look at my sig for what's going on). I've even upped the Vcore to 1.75V, something that isn't really needed for the processor.
What I'm worried about is that I'm thinking that all those pictures I've seen of other people doing the mod it seems that they're on Rev. 1 boards, whereas I'm on a 2.x board, though the layouts didn't look all that different. While I really would have liked a circuit diagram that's of course not possible, so I tried what I could with what was available.
The result seems to be that the putting a 30K resistor in the Vdimm circuit raised the voltage .2V (which is weird as other were reporting a .3V raise with the use of a 30K resistor), and the Vcore now has a ±.016V fluctuation (MUCH better than the ±.15V fluctuation I was getting) with a .075V raise.
Now unfortunately I'm realizing that 3.3~3.4 is about all I'm going to get out of this 2.8c (kinda lame), so I guess I really don't need the extra voltage going to the Vdimm as it's PC4200 that's supposed to run at abut 2.6/7 anyway, so I'm fine getting rid of that-- easy enough. But has anyone actually had problems with the droop mod on a Rev. 2.x
board? Anyone with a Rev. 2 board ever do this?
I hate the smell of defeat-- tell me it aint so!
The problem is that I get random restarts now, even when only at 3.3G (look at my sig for what's going on). I've even upped the Vcore to 1.75V, something that isn't really needed for the processor.
What I'm worried about is that I'm thinking that all those pictures I've seen of other people doing the mod it seems that they're on Rev. 1 boards, whereas I'm on a 2.x board, though the layouts didn't look all that different. While I really would have liked a circuit diagram that's of course not possible, so I tried what I could with what was available.
The result seems to be that the putting a 30K resistor in the Vdimm circuit raised the voltage .2V (which is weird as other were reporting a .3V raise with the use of a 30K resistor), and the Vcore now has a ±.016V fluctuation (MUCH better than the ±.15V fluctuation I was getting) with a .075V raise.
Now unfortunately I'm realizing that 3.3~3.4 is about all I'm going to get out of this 2.8c (kinda lame), so I guess I really don't need the extra voltage going to the Vdimm as it's PC4200 that's supposed to run at abut 2.6/7 anyway, so I'm fine getting rid of that-- easy enough. But has anyone actually had problems with the droop mod on a Rev. 2.x
board? Anyone with a Rev. 2 board ever do this?
I hate the smell of defeat-- tell me it aint so!
