I'm almost certain Oblivion would benefit. BF2 was the game that convinced me to upgrade from 1 to 2 GB... so I already had 2 GB by the time Oblivion dropped. However, that was around 18 months ago. You need to keep in mind that your next system won't utilize DDR and the expense you incur now will be a sunk cost . Will it help games? Most of them, yes. Is it worth it at this point in your system's life? Maybe... maybe not.