I really don't recommend it, it is compatible sure, i had a BT on an A7N8X Deluxe in the past.
You will have to stick (literally) a back metal plate on the mobo which is hard to remove afterwards and if you do, my guess is the stickers won't "stick" anymore. At least the mounting system for the A64 is different so i just left the backplate on the a7n8x..
I wasn't impressed with the temperatures at all, i believe the BT is just too heavy for a small AXP die making the as5 spread too much on the base. It also didn't feel too confortable when the tower is standing (heavy = stearing) , i would move the case horizontally if i had to.
I recommend the Thermalright SI-97(kt) , combine it with a fan of your choice and you'll be one happy man. And FYI thermalright customer service is top notch, i lost my retantion clips for my si-97 i just e-mailed them and received an answer within hours everytime i did and my clips are on the way atm ^^
@ Jabtech 29.95$
vs around 50$ for the BT.
Hope it'll help your decision