Posted 28 February 2011 - 01:34 AM
This is correct of Full license (Retail) and OEM Windows sourced from Microsoft, the Windows installation is the same.
It cannot be said with certainty if the OEM Windows installations that have been customised by brand name manufacturers suffer in performance because of any extras that may be provided. Many people believe their brandname systems are better with a clean Windows installation, deleting what they regard as "bloatware".
Apart from that, the difference is in the license as Dmacf10 said. OEM is licensed for use only on the original system it is installed onto, and customer support is not provided by Microsoft but by the system builder. Retail Windows can be moved onto another computer if it is removed from the previous system, and MS is responsible for customer support for installation and operation of the OS.
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