Dear forum members, I am reposting this thread from the iMac hardware forum in the hope I might get more responses. I've looked through a lot of threads about the purchasing decisions for the iMac. However, I could not find one which specifically addresses virtualisation. I have been a PC user for decades, but have been enamoured by the allure of the iMac. Nonetheless, there are many Windows programs that I need to use, and as such, virtualisation is required. I have not decided on Parallels Desktop of VMware Fusion, but I am leaning towards Fusion since it is less of a performance hit, so I've read. Originally, I was planning to get the 2.4GHz version upgrading it to 2GB RAM, since I do not perform much processor intensive tasks, such as video editing. But having read about how virtualisation can impact the performance of the iMac, I was wondering whether 2.4GHz is enough. One of the reasons I am going for a Mac is because I am sick of how slow PCs can get after a year or so. I want applications to open quickly, and for interactive tasks to be responsive and smooth. Apple seems to lead in this area. Does anyone have any experience with the 2.4GHz (2GB) version using Parallels or Fusion, and did they experience sluggishness? Thank you for your help!