Sad enough i would have to say my Favorite was
1. No name Geforce FX 6600LE "as stating on boot"
O/C like mad,.... stock core-300, Mem-600
O/Ced core-425,Mem-820
2. Intel Celeron D 320 s478.
This was my first processor and i O/Ced it on stock intel cooling and a POC PCchips board to 2.8Ghz and it ran smooth