Are new aluminum radiators better?

HemiSSDart said

Let me see, a company that sells aluminum radiators says they are better. I have seen other studies that say the exact opposite. I work in the cell phone industry, analog was MUCH better than digital, but digital is MUCH cheaper, guess which one we use today...

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HemiSSDart said

There is no doubt about it, aluminum WILL dissipate more quickly, but everything is NOT equal in an automotive application. The ONLY reason we have aluminum (and in most instances OEM built with plastic sides) radiators is that they are MUCH CHEAPER.

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Typically, at least until trump rolled them back, oem's cared far more about meeting efficiency standards and when you can run a smaller, lighter radiator, cost is irrelevant.

Aluminum offers structural advantages over brass as well, so you can make a more efficient radiator regardless of material.