Everlast 210EXT review and pictures

[performance]

So the PowerTig 250EXT is using these four channel Infineon BTS5440G chips encased inside those black IBGT power modules at the bottom of the unit?

http://media.digikey.com/pdf/Data Sheets/Infineon PDFs/BTS5440G.pdf

No, that's not an IGBT.
It's the white blocks under the green circuit boards.