Yes, the pad mod is mostly for those oem boxes like Dell and Lenovo or with crappy motherboards. With a decent board, no need for it...
Fingernail polish or varnish will do the same thing as the tape, but easier to apply.
Just make sure it's dry first.
Has anyone with a Dell 530 w/Q6600 change the heatsink to a larger unit?
If so what are you using and can you fit the side panel back on?
I was looking at the AC Freezer 7 Pro or the Thermalright Ultima 90 but I do not think the side panel will clear.