Oh it's been said, by many, many people. Google just turn around and say you don't need it, it won't make it run faster and ignore the users. searching multi core or 64bit gives some idea of the enotmity of feeling. And after you've read through a few posts, you realise that one paragraph is repeated verbatim over, and over, and over, and over, and over sometimes several times in one topic. "This is a topic which has been discussed extensively in these forums. While it is true that 64-bit processing gives applications access to more memory, it also remains true that few (if any) processes inside SketchUp require that much memory to complete their work. Put another way, memory isn't the bottleneck for the processes where folks want to see improved performance. To use your example, making changes and then sending the model back to the renderer would not be improved by access to more memory." Sitting, waiting fifteen minutes or more for a simple move to sort it's self out with one core at 100% and the other three idleing. Sketchup using 2.4Gig of memory the rest of it's addressable space being my GPU the remaining 1.6gig going to waste. It was even more frustrating before my ram blew up and got lost in the RMA ether, then I had over 5gigs sitting doing nothing! Solidworks, vectorworks, autocad, rhino etc. all support (or even recommend) a 64bit environment. Now in some respects the guy from Google is correct, many of the drawing tasks are done on one core, even in the programs that are 64bit and support multi core systems (I feel this is because no one's willing to do a complete re-write and face all the costs involved therein, but there could be some honest reason for this...) but offloading anything and everything else onto other cores can only speed it up, and more RAM, for heaven's sake we need more addressable RAM!