As much as some think I "know something" and being an avid over-clocker for six or seven years, I'm totally confused about the Sandy Bridge on-board iGPU graphics. Supposedly, this is supposed to "work with" your discrete graphics adaptor -- in my case, an eVGA/nVidia (Fermi) 570GTX. When I first put the system together, I didn't know or think that the board would automatically default to the dGPU if it was inserted into the PCI-E x16 slot. With enough experience to know not to panic when things don't seem to work right off the bat, I powered down the system and moved the monitor cable to the nVidia card. OK! Here's where I have to beg for indulgence. The only OS I could install on the system at the time was VISTA-64-SP1 retail. I was actually planning to defer Windows 7 until later in the year. The "Accelerated Graphics" drivers that came with the motherboard were installed, just as expeditiously as the chipset and other drivers and the nVidia graphics driver to dispatch any bang nodes in Device Manager as soon as the OS was installed. I didn't initially notice that the Device manager only showed the eVGA/nVidia 570GTX card. Nothing about the Intel graphics or driver. Looking further and later in the journey of working with this new machine, I discovered that the LUCID_VIRTU software touted in review articles didn't ship any VISTA-compatible version with my ASUS p8Z68[ . . .] motherboard. [The basics of that entire motherboard line are all the same, just some product differentiation over the Marvel SATA-3 controller for the V-Pro and some other peripheral extras included with the Deluxe version.] Apparently Lucid-Virtu was only made to work with Win-7. And -- OK -- so I got the V-Pro board . . . Here, I'm a bit confused. I should be able to have some advantage in a coordinated use of the iGPU and dGPU without Lucid Virtu. There's also a feature called Intel Quick Sync -- which seems related to this new iGPU-on-processor phenomenon. I've tried to find some explanation of this on-line, but there isn't much to be found except vague discussions in reviews touting Lucid-Virtu. Further, you'd think that whatever integrated advantages for the extra GPU would be, they would also be available under VISTA-64 since the drivers are provided for that OS as well as Win-7. I've enabled the iGPU and reserved the 64MB of memory in UEFI-BIOS, but disabled the "multi-monitor for Lucid Virtu" feature. Where should I go from here? What advantages can I capture? Or is the iGPU just some appendage of the operating system that has "dead" value to me until I get the Win 7 OS to install next Wednesday? Before I do that, I'd like to know (a) what I can do with the iGPU and dGPU in VISTA-64 [without Lucid-Virtu], (b) what I can do with them in Win-7 without Lucid, etc. What should I do NOW with the VISTA-64 OS installed? What advantages can I capture from the iGPU to allow usage of the dGPU? Must I connect the monitor to the iGPU instead of the dGPU? Did I install the drivers correctly? Should I uninstall the nVidia 570GTX drivers, shut down the system, boot to BIOS and make the default graphics iGPU? Shut down again and reconnect the monitor? Install the Intel accelerated graphics drivers? Then install the drivers for the 570 GTX? Someone, someone must know more about this than I do, and someone must have a clear idea how I should proceed. There seems to have been a time to my remembrance that you could have two (more?) graphics adapters in a PC connected to more than one monitor, and that you could reap the benefits of both. what about rendering? Does the iGPU allow me to get enhanced performance for those types of operations? Guidance and insight? Anybody have any? EDIT: ANYBODY?!