I have water on mine at this second and it blocks nothing at all. I have a C2 3930 and it clocks very well in both mhz and RAM. The best in terms of both these factors I have had. My C1 3960 did better mhz but not as good memory controller by far.
Its a silicon lottery with the chips these days it really is as everything is now on the chip its self they may be great in one area but **** in another.
Its the same with Ivy too.
8 Pack
What sort of cooler do you use. Is it one of the custom ones found here at overclockers uk and what sort of temps do you get.
Cheers