[NAME]  End users wont have that information and DELL does not post or document the PPID info.  There are also Revisions aka A00 A01 A02 A03 etc for each number.  I would venture to guess that Some versions of the board have WINDOWS 8  Key in bios while others have SLP 2.0 WIN7 Key in bios and others have no key in bios aka they are FreeDOS or Linux not windows.  Information you are asking for is not forthcoming ever.  "faster" is also not something that has any meaning because it depends on the CPU and integrated GPU. Dell PPID Numbers   [IMAGE] PC5F7 6X1TJN4YC8 Piece Part Identification (PPID) number is used on Dell products to track smaller, individual components. This 20-digit number contains a lot of technical  information, such as the manufacturing company, country origin aka CN=China,  MX = Mexico, KR = South Korea, Manufacture date, part number, revision etc.   PPID  on a battery label KR 0C4HCW 71275 688 0000 X00 KR = assembled in Korea C4HCW = Dell part number 688 = date code (August 8, 2016).  
Is there a difference between PC5F7 and 6X1TJ and N4YC8? They all seem to have the exact same io shield, motherboard connections, same chipset same cpu socket but different part numbers? I am currently looking at 2 Dell 9020s one of them uses PC5F7 and the other one uses 6X1TJ? I am building a budget gaming pc but which one would be faster?
Dell 9020 motherboard part numbers