Sorry, see edited post above. I woulda made a new one if I'd seen your last response. I'm not sure about those two factors but I'll go try to find out.


edit: Awite, there isn't a blasted thing on the net about heat properties of galvanized steel vs. aluminum in case construction. (or perhaps there is and I just can't find it ) I suspect this is because it probably doesn't matter though (not that I'm sure of this, just the impression I'm getting)

The key component in keeping your system cool, to the best of my knowledge, is going to be the air flow in your case. That factor will influence your case temp a heck of a lot more than the type of metal used.

As far as sound absorbtion, common sense tells me the galvanized product would likely be more helpful in this department since it is just simply a heavier material.

Sorry I can't be more definitive, that's the best I've got.