for what I have seen, I have just 1 option that fits the height and weight limit, and that is:
Hyper TX3 EVO
from TX3 Evo, I don't like the way it is fixed to the motherboard (with no blackplate), and the TX3 EVO bracket-version is not available for me.
Other option, with 500 + 80 gr (more than 450 gr limit) but with black-plate fixing method is the Hyper 103
I really don't know what to do. I don't like the fixing way of the TX3 EVO, but the weight of the Hyper 103 afraid me.
PD: sorry for my english