Have them send you a pic of the nameplate. The advice I followed was to get a "G23MLD_V2" with 4 GB RAM. This model has a 625 brainbox. You can upgrade the video card with a drop in E6760 video card at a later date. The upgraded brainbox with the E6760 video card is a 660 brainbox. There are several threads on NLG about this. You'll want to purchase an EKEY and a diagnostic flash drive so that you can modify, delete or add games, and clear any machine freezes.. My go to for G23 software is RB, a member here. He can help you out at a reasonable cost, or point you in the right direction.