Difference in heat between aluminium and steel case?

[Fana]

Building new system (or trying to aquire parts), and am set on a Coolermaster Wavemaster aluminium case. But since its rather pricy (for a poor student anyway) i was wondering if anyone knows what kind of benefit an alum case has when it come to heat dispersal? Is the added cost actually worth it, or is it only really worth it in a heavily overclocked system with lots of extra gadgets? Anyone have any actuall numbers on how much less heat there generally is in a alum case compared to a steel (0.8mm) one?

 

[Chronictank]

aluminium is lighter
other than that i havent really seen a significant difference tbh.
Very slight temp decrease (but i think thats cus case is bigger) by about .5-1oC nothing considerble.

Not a fair test as cases are not the same size and i have alot more ventilation in my aluminium one now so dropped the temp 3-5oC below what is used to be

 

[Honza]

Material of case won't change temperature in case at all (at least not so far you could even notice it). It's purely design/fashion modification. BTW, aluminium case looks nice just for few months, then it gets dull.