When you get yours, would you mind first using the stock fan for some time before changing the fan? I mean, do not mod it right away.
It would be nice to learn by first hand experience of how the stock fan operates (eg how silent, at what wattage would it begin to spin up...etc).
Looking at the interior pic of the Gold version (in Jonnyguru's review), it has a 2-pin fan header (vs a 4-pin header in the Platinum version). And it is a 2-wire fan in the Gold vs a 3-wire fan in the Platinum. So, the fan, technically speaking, is not exactly unchanged.
Well, I look forward to your report when your unit arrives.