epox 8rda+ overclock cooling

i have an epox 8rda+ and an xp 2500 @ 200x11, and previously with an slk800 and a smartfan II with ceramique the longest i ran prime95 wuz 13 hours.

now i ordered a zalman heatsink, applied it to the northbridge with ceramique, and moved the nb heatsink to the southbridge, with ceramique, and i cant break 2 hours on prime 95.

the nb heatsink does not mate very well at all with the nb, but i think the chip cover is concave. can a lap that?.. how will i now if its getting too thin?

any thoughts on this stability decrease would help me.

thank you.

I have heard many reports of (at least) the Rev 1.x's having massively concaved nb cores, and I do believe there are a few guides on lapping the 8rda nb somewhere, try a search.

what zalman did you put on the NB? and have you tried just switching the new zalman and the SB (old NB cooler) around?

so y would prime95 run so much better with the old heatsink?...

should i switch to the thermal paste that came with the new zalman? [the zmnb32j]

erm what zalman fan/sink did u get ??