yes Cu wil perform better with more airflow

buth the fins from the alu HS have more space between them and will perform better with less flow

but my gues is the difference will be a couple of degrees

Cu will be better, the ALU will only start performing good with a high CFM fan.

I would take the Cu,

I thought that CU could take up more heat...at least it heats up faster...

so, nobody knows? :D

I'll check both

me and some other people think the opposite. I'll test it today!

you should go for the alu one

http://www.systemcooling.com/modules...ticle&sid=1288

SUMMARY: Excellent choice for aggressive air-cooling, but at very high noise levels.

an ALU heatsink can only keep up with a CU one if high CFM fans are used, when low CFM are used the CU will outperform because it can absorb more heat, thereby cooling the CPU more, while the ALU's heat absorbtion will be less, leaving the CPU running warmer.

we'll see

don't forget we're talking about totally different heatsinks :)

Any results yet?