Droop mod @ p4c800

[Fisk]

I have done the droop mod on my p4c800 but the vcore fluctates a little more than i had expected.. are there any idea too try the other droop mod ( the macci droop mod or what its called ) :confused:

EDIT: are there any chance to get it completly stable ??

[Hell-Fire]

Not sure you can get it completely stable if you are talking about zero flux.

Every board may be a "little" different, so try a bit under and a bit over the recommended 28K setting.

As far as the "macci" way to do it, that just refers to soldering on another part of the board versus soldering directly to the capacitor. The other solder locations are in the same circuit as the traditional way to do this mod, that is why you can solder there as well.

[Fisk]

OK thx Hell-Fire! one more thing.. hmm.. when I set the resistor to 28k and start the computer and suddenly the resistance is like 32k ?? should it be like that? :)

[mikead_99]

Originally posted by Fisk
OK thx Hell-Fire! one more thing.. hmm.. when I set the resistor to 28k and start the computer and suddenly the resistance is like 32k ?? should it be like that? :)

You shouldn't measure resistence while the board is powered. Also, you can't accurately measure resistence of a mod like that while the resistor is in circuit. You will read the resistence of the circuit you installed in as well. Set the pot. while it isn't installed to 28k. Best way to do this is to set it, install it, and adjust slowly while loading the cpu with P95 or something else intensive to the cpu. By slowly I mean to turn the pot slowly, but also stop after an adjust and check your droop while loaded. Takes some time. You will most likely see a little droop forever, but you can make a hell of an improvement over stock setup. You've tweaked to the point that it won't reduce droop anymore if your vCore starts rising. Fine-tuned like that I still see a .02 avg. droop, but that is not a problem.

edit: only adjust the pot. with the board powered if you got some good cermets. If you went radio shack or some other cheaper resistor the resistence may jump around while adjusting. You'd probably be OK, but better just to avoid the chance of problems.