PS, I just tried reading the review you posted a link to.
It does not mention the room temp, nor does it mention fan speeds on the "Aktiv" radiator, so, IMHO, about the only data you can bring away is that, using an XP1800+ at 1.65V, the Maxi keeps coolant 10C warmer than an unknown radiator/fan combo and at 1.85, the Maxi gets 2.5C warmer (and the active radiator is unchanged).
If room temp was the somewhat-typical 20 to 22C, then these temps were somewhere between 15.5C and 20C over ambient.
Again, they don't mention, but given the overclock, the processor was
probably the Thoroughbred 1800+, so 51W max - only they didn't mention whether they were running the CPU at 100%, so they were getting these temps with some heat source
somewhere between 35W and 65W.
They
did provide some pretty bar graphs to look at, though...
And for all I know, it's a literary masterpiece (hard to tell once Systran gets through with it - don't speak German myself...)