Has anyone tried 4x 4 GB with Core i5/i7 "Lynnfield" LGA1156 CPUs? I know for one Lynnfield IMC only supports up to 16 GB of memory, but when maxed out, is there an address-space limitation? Does graphics card memory eat into system memory "usability"? I plan a memory upgrade, and I'll be using Windows 7 x64 Ultimate. I know that Windows 7 Home has a 16 GB address-space limitation.