Anyone know where this file went? I can't find it anywhere anymore.

It was a file that allowed you to make it so FO3 would use more than 3GB RAM, fyi.

Not sure, but here's how to do it yourself:

• Download & Install http://www.ntcore.com/exsuite.php
  
• Make a backup of fallout3.exe
  
• Open fallout3.exe in CFF Explorer
  
• Navigate to Nt Headers -> File Header
  
• Click on Characteristics -> Click Here
  
• Check "App can handle >2gb addresset"
  
• Save

You're good to go

Seems to have disappeared. Have you tried the http://www.fallout3nexus.com/downloads/file.php?id=6510 instead?

Ahh man, such a huge difference. Thanks a lot!