You do NOT need a Directx 10 card for the Vista 3d Flip, it just helps, any of the modern cards would do, but if you are getting a new card go for one with Directx 10.
My old video card, before Vista was released (512 mb) worked great.
Galaxy Note 8 vs iPhone X
5 best 3D model websites
iPhone 8 vs iPhone X
WhatsApp : comment lire vos messages sans que l’expéditeur le sache