Ok, I got this one
Newegg.ca - SPARKLE SFPC84GS256U2LP GeForce 8400 GS 256MB 64-bit GDDR2 PCI HDCP Ready Video Card - Desktop Graphics / Video Cards
Now, do I just swap the cards and leave the drivers untouched or do I uninstall the drivers with DriveSweeper, replace the hardware and clean install drivers again? I upgraded many cards but I never got a clear answer on that one
I 'd rather not uninstall/reinstall if that's a redundancy.