Applies to:
Windows Server 2012 RTM     
Windows Server 8 RTM    

Note: You should check http://support.microsoft.com for the latest version of the different files.

List of Performance Monitor (Perfmon) related hotfixes post RTM for Windows 8 RTM and Windows Server 2012 RTM as of Sep. 2013:

Originally published Sep. 2013 courtesy of the Microsoft Premier WorkshopPlus Vital Signs  instructors: Benny Lakunishok; Clint Huffman; Jeff Stokes; Moti Bani;  Shane Creamer; and many more.

2877211 Performance Monitor uses incorrect calculation for certain types of counters in Windows 8 or in Windows Server 2012
http://support.microsoft.com/?id=2877211

Update(s):

Pdhui.dll 6.2.9200.16384 
Perfmon.exe 6.2.9200.16384 
Perfmon.msc 
Performance monitor.lnk