We know about Vista's GUI using 3D vector graphics, but could this really dramatically bump up system requirements? We won't know for sure for a while, but it's looking like a possibility:[Tom's Hardware]The transcript quotes Page as stating, "The GPU will need a plenty of room to operate in Vista. The more memory you put on a video card, the better, really. We want the least dumping back to main memory because that's slower than graphics. If you have 128 MByte, that's good; if you have 256 MByte, that's better; but I expect that video card memory will go up a lot when Longhorn is released."
As for system RAM, Page reportedly said, 512 MByte is "heaps" for a 32-bit system. For a 64-bit system, however, "you're going to want 2 gigs of DDR3 RAM." The transcript states that Page explained 64-bit users will need to double their memory because units of memory are naturally double the size. "If you try to make do with what you've got," the transcript adds, "you'll see less performance. But RAM is now so cheap, it's hardly an issue."