Hello everyone, Being a long time lurker, but is time to formally join the group! Just obtained a cMP 4.1 with the 2.93 QC cpu and have being reading for over a week now all the post that I was able to read here about the CPU upgrade and the needed firmware to enable this. This is what I will like to do. I have a gaming PC and now the cMP, I will to eliminate the PC and just keep the cMP. Also, I hate dual booting, so I will like to set up a W7 or 8 in a VM and use 2 vid cards to dedicate one for the W7 VM and the other for regular OSX use. I know that I need VT-d for this and here is where things get interesting, I cannot find any info regarding anyone trying to do this before. Also, per Intel ARK, but current CPU lacks VT-d, but that can be taken care of by the CPU upgrade. Also noted, the X's CPU's comes with VT-d, but not the W's, but also, the support must be included in the motherboard and bios and here is my dilemma, I don't want to buy a X5690 and end up with no VT-d support because is not on the motherboard. So, first question, can anyone that already have such an upgrade test if VT-d is reported being available? This would be visible by using Fusion, Parallels or maybe Xen. Regarding the upgrade itself, I keep reading conflicting post regarding the if the CPU is dellided or not on the single CPU cMP 4.1. So, second question, does the stock CPU on my cMP is lidded or not? Lastly, I have access to a cMP 5.1 CPU tray with what I believe is a single Westmere Xeon 6 cores CPU. I read that I can use that tray on a 4.1, after the firmware update. Then third question, Can I just swap CPU trays? Will the 5.1 with a firmware downgrade work with the CPU tray and CPU from a 4.1? Sorry if all these has being answered before, but I just couldn't find a proper answer to my questions. Thanks.