[Boris_M]

Hi CFDfan,

there is no difference between SWFS and FloEFD with regards to electronics cooling at the moment.
Yes, FloTHERM XT is based on the meshing and solver of FloEFD but uses the electronics cooling know-how of FloTHERM.
FloTHERM is the electronics cooling market leader and has waaaaay more electronics cooling capabilities than FloEFD has. It is specifically built to the electronics cooling applications whereas FloEFD is a general purpose CFD code and has some but nearly as many functionalities for electronics cooling as FloTHERM and FloTHERM XT has.
The good thing with FloTHERM XT is you can use the SW models directly in FloTHERM XT as is is based on the SW modeler and therefore all parametric data of the SW model is available and the geometry can be adjusted just like in SW.
In FloTHERM XT you can use EDA import in which you will get not only the PCB data from a simple block to a detailed PCB with single traces from ODB++ data (detailed Copper nets) as well as automatically getting all the EDA information about heat generation rate of the imported ICs and other components in that comes from the EDA tool. So if you import a PCB you can filter components by size as well as dissipated power and also select which detail you want to have them, as a block, 2R or more detailed like a DELPHI model etc. from FloTHERM Pack (www.flothermpack.com) where you can generate detail chip models or also use them from most major vendors. You can also capture power modes of components
And FloTHERM XT has just like FloTHERM a smart part library so if you need a heat sink you can basically drag and drop it out of a library with just a few definitions about the size and fin height etc. The same goes for many other components.

So if you are working strongly in the electronics cooling application FloTHERM or FloTHERM XT would be the best solution from Mentor Graphics. If you like the meshing and the direct use of your SW models then FloTHERM XT is the strongest electronics cooling solution you can get that even uses the FloEFD/SWFS meshing and solver technology.
If you are interested then you can always have a try of it by contacting one of the Mentor offices or resellers, depending on where you are based. It is like test driving a car. You don't have to buy it but if it helps to do you job more accurate and better then it is worth a try.

Boris