<A target="_blank" href="http://www.computerworld.com/s/article/9158258/Most_Windows_7_PCs_max_out_memory">Windows 7 appears to be hungrier for RAM than earlier versions of Windows.</A> Despite having an average 3.3GB of memory, XPnet found almost 90 percent of their Win7 machines were maxed out and had to use virtual memory to handle tasks.