Attached Link: http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx

For those who don't know, on most modern computers, when all RAM is used, the computer will swap data to the hard drive and back to give the impression that there is more RAM. I think the key quote in e-Frontier post is "hard drive speed does have a significant impact on Poser's performance, especially if you're unlucky enough to require the use of virtual memory." Virtual memory is many times slower than "real" memory. Consider RAM speed is measured in 1/1,000,000,000 of a second and hard drives are measured in 1/1,000 of a seconds. Fast hard drive(s) will definitely make a PC perform faster, inside Poser and in Windows in general. A lack of RAM will definitely make your PC run slower, however adding RAM doesn't always make your PC faster. I think once you get much beyond 1GB of RAM, you'll get diminishing returns. According the Microsoft: "The maximum amount of memory that can be supported on Windows XP Professional .. is 4 GB. ... The virtual address space of processes and applications is still limited to 2 GB unless the /3GB switch is used in the Boot.ini file" (see link)