Quote from: Cortex7 on October 11, 2014, 02:31:22 PM

Quote from: WiWi on October 11, 2014, 11:22:02 AM

Hi all,

When placing coolers on a HEX4M chips anything special to mind to? Or is it just the same as placing cooler on CPU?
Asking because in few days a new hex4m without coolers will arrive.

I've got standard cooling paste here, do i need special cooling paste, e.g. with extra silver in it, or can i use cooling pads instead of cooling paste?

Wilco

Depends on the quality of your cooler blocks.

Some cheaper blocks (like mine) are not perfectly flat, giving rise to hotsposts on the die. this manifests as good hashing that goes bad after a little heat buildup, in this case you have two options:

[1] lap your cooler blocks to get them flat and use a good paste. best option but alot of work if you have many boards.

[2] use slim thermal pads with best conductivity you can get. this works better than paste because it has a little elasticity to it and always expands to fill voids.

regardless you should go for best thermal conduction you can get, for paste I use shin-etsu. for pads i use a thin thermal adhesive pad, the type used for sticking sinks on RAM etc (smeared with shin-etsu)

Ok, thx. i'll use pads then i've already got good quality right here.
I've got the artic coolers for the hex4M, they where delivered with the board