Open large text file fast and consume little resource tool

Open large text file fast and consume little resource tool.
I try to open a .txt file with 300MB size by notepad/notepad++ , those txt editor use lots of memory and slow my windows system. Finally the pop-up message show me "file too large,cannot open.".
After try to use "LTFViewer" to open the large file, the performance is very good and only a little resource to by occupy.

http://www.swiftgear.com/fltfviewer/fLTFViewr.zip