I was wondering whether people are using thermal paste or thermal pads with these uber-awesome VRM blocks from Nate?

stren
So if anyone is selling a VRM block only let me know.  Otherwise I may hop on the 2nd batch if it's not too late.

you will have to be on another batch.  This one is completely spoke for.
 
Thermal tape.  0.5mm? 1mm?  I would suggest the tape, over just thermal paste.  Lots going on by the cpu.

Definitely paste. Don't compromise though, get Arctic Silver.

On the CPU and GPU you have a wide flat surface that is perfectly flat and you can get an attachment with less than .001 gap between the parts.  In cases like these you use paste.
 
On the VReg you have multiple components that are individually soldered to the board, with gaps and components in between.  While they all may look parallel and flat, a closer inspection will show that they are not even close.  Attempting to place a single flat block across them all will leave some with partial contact, or no contact at all.  Paste does not work very well in cases where you have inconsistent gaps and is prone to flow out from between parts where there are larger gaps.  This is precisely the reason that tape is used in these cases, it fills the gaps, transfers the heat, and will not go everywhere/anywhere.  

Thanks for the info, I wasn't aware of the component height issue.

chememan
On the CPU and GPU you have a wide flat surface that is perfectly flat and you can get an attachment with less than .001 gap between the parts.  In cases like these you use paste.
 
On the VReg you have multiple components that are individually soldered to the board, with gaps and components in between.  While they all may look parallel and flat, a closer inspection will show that they are not even close.  Attempting to place a single flat block across them all will leave some with partial contact, or no contact at all.  Paste does not work very well in cases where you have inconsistent gaps and is prone to flow out from between parts where there are larger gaps.  This is precisely the reason that tape is used in these cases, it fills the gaps, transfers the heat, and will not go everywhere/anywhere.  

excellent answer. 
 
Not much progress to speak of, but i am almost done with the plate.  I expect to have some copper cut by the end of this week. 

nateman_doo, Hello!
what study of total progress our waterblocks?
 

Checked the compatibility with the Primochill Revolver rigid fittings, and they are too wide to fit side-by-side on the chipset block.  Sorry I don't have a pic to illustrate my findings, but basically the in-out ports are too close together for these wide fittings.
 
 

All fittings will be tight on the chipset block except maybe barbs.
It really isn't an issue if you use an extender on at least one of the ports.
;-)

stren
So if anyone is selling a VRM block only let me know.  Otherwise I may hop on the 2nd batch if it's not too late.

If you live in the U.S. I'll sell you mine.