Importance of soldering iron temperature for RGH/JTAG work?

[cacatpost]

So I'm considering one of the following soldering irons for my first RGH:

Hakko FX888D
Weller WP25 Professional 25Watts/120V Soldering Iron

The Hakko model has variable temperature control whereas the Weller model does not. That being said, outside of damaging the motherboard with too much heat, what are the advantages of having a variable temperature controlled soldering iron? Also, if I were to get the Hakko, what temperature should I set the iron to while doing the RGH install?

Thanks in advance.

 

[Utmad]

The variable temp is best, when de-soldering some components from motherboards you need to give more heat as they use lead free solder so it is good to have the control of the temp. I personally set mine at 400 Degrees for and RGH work I do as I feel quite comfortable at this temperature, it is a good idea to get some scrap boards and test to find what you are comfortable with.