Share this postWeb White NoiseFun with Portals & PhysXCopy linkFacebookEmailNotesMoreFun with Portals & PhysXJAB_auJul 19, 2006Share this postWeb White NoiseFun with Portals & PhysXCopy linkFacebookEmailNotesMoreShareWhile I’m not overly excited about PPUs (Physics Processing Unit), as Valve have proven that they can program good physics without any PPU of any kind. This article shows a nice video of what Valve can do with an PPU.