Originally Posted by amped
The thing is, it's not that Orange is specifically for TCCD, and Yellow for Winbond, it's that Yellow has proven to be able to handle higher voltages better. Winbond chips accept very high voltages in order to maintain lower timings when overclocked, so they're better off in the yellow to be more stable. If you're not running them with a high vdimm, then they're fine in the orange, especially if they perform better.
This is correct .. the Yellow are 'electrically' better suited for the higher Vdimm >3.2v.
With the Micron chips you will find that they will respond well to some extra Vdimm - up around 2.9-2.95v to run any where up to DDR600 (on some of the better modules) at CAS3-3-3-8.
At the end of the day you will be best to see what runs best for your setup as they all run differently even with the same components. Keeping them cool is also a must, goes for not only UTT but also TCCx running high MHz as they get hot too as will the Microns at those speeds.
Start off with the orange slots (paired) and see where you get to.