That's going to depend very heavily on which exact CPU you have. If it's an old Core 2 Duo, or one of AMD's older APUs, it's not going to work without a GPU upgrade at absolute minimum, though a CPU upgrade would also be advisable. If this is a newer dual core, it might run, but performance will be pretty bad without a GPU upgrade. Please post more detailed system specs, like exact model of CPU, motherboard, power supply.