#!/usr/bin/perl -w

# use bin\perl.exe wmi.pl to run.
# have fun!
# 2009/6/17 twitter.com/vinocui
# 
# useful links:
# (WMI space definition) http://msdn.microsoft.com/en-us/library/aa394084(VS.85).aspx
# (OLE usage on CPAN)    http://cpan.uwinnipeg.ca/htdocs/Win32-OLE/Win32/OLE.html#Object_methods_and_properties
#

use Win32::OLE;

#my $wmi = Win32::OLE->GetObject("winmgmts://./root/cimv2") or die "failed to retrieve cimv2.";
# winmgmts means to access WMI service.

my $wmi = Win32::OLE->GetObject("WinMgmts://./root/cimv2") or die "Failed: GetObject\n";
my $list, my $v;


# http://msdn.microsoft.com/en-us/library/aa394373(VS.85).aspx
# Minimum supported client	Windows 2000 Professional
# Minimum supported server	Windows 2000 Server
$list = $wmi->InstancesOf("Win32_Processor") or die "Failed: InstancesOf\n";

foreach $v (Win32::OLE::in $list){
    print "CPU:\n";
    print "\t", $v->{Name}, "\n";
    print "\t", $v->{Caption}, "\n";
}
                           
# http://msdn.microsoft.com/en-us/library/aa394239(VS.85).aspx
# Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  
# If a computer has multiple operating systems installed, this class only returns an 
# instance for the currently active operating system.
$list = $wmi->InstancesOf("Win32_OperatingSystem") or die "Failed: InstancesOf\n";

foreach $v (Win32::OLE::in $list){
    print "OS:\n";
    print "\t", $v->{Name}, "\n";
}


# http://msdn.microsoft.com/en-us/library/aa394512(VS.85).aspx
# Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  This class is supported.
$list = $wmi->InstancesOf("Win32_VideoController") or die "Failed: InstancesOf\n";
foreach $v (Win32::OLE::in $list){
    print "Video Memory:\n";
    print "\t", $v->{Description}, "\n";
    print "\t", $v->{AdapterRAM}/1024/1024, "MBytes \n";
}


0;

Refer to http://msdn.microsoft.com/en-us/library/aa394512(VS.85).aspx

(Perl) using WMI to get video memory information

video

Perl