I'm a little confused with this card. I will be purchasing a mac pro later this week, and have the following options for a graphics card: NVIDIA GeForce 7300 GT 256MB (single-link DVI/dual-link DVI) 2 x NVIDIA GeForce 7300 GT 256MB [Add $150] ATI Radeon X1900 XT 512MB (2 x dual-link DVI) [Add $250] 3 x NVIDIA GeForce 7300 GT 256MB [Add $300] 4 x NVIDIA GeForce 7300 GT 256MB [Add $450] NVIDIA Quadro FX 4500 512MB, Stereo 3D (2 x dual-link DVI) [Add $1650] what are the 2X, 3X & 4X for? I will be primarily using this for creating graphics, both 3D & 2D, as well as gaming, although Imp not very much of a 1st person shooter fan anymore. I use Blender for 3D, and they mentioned in their Video Card recommendations that NVIDIA is the preferred card of choice. Does that mean their are 4 NVIDIA GeForce 7300 GT 256MB in the machine, or is it just one that is 4 times as fast (I assume they are over clocking the card). I am thinking of getting the 4 X NVIDIA GeForce 7300 GT 256MB. Any help would be appreciated, Mr. S.