✔ 最佳答案
No matter what version of Windows Vista that you are using
The recommanded memory size is 1GB.
2007-02-14 11:14:02 補充:
Although the page shows need 512MB, however, it doesn't enough.because they are talking about FRESH INSTALL (no other software), after you run many times and installed some program, the system will be slow down like your case.
2007-02-14 11:14:08 補充:
http://www.microsoft.com/windows/products/windowsvista/editions/systemrequirements.mspx