Thank you for joining the community, I understand that you'd like to know if the Intel Xeon E5-2609 v3 supports windows server 2008 r2. In this case, we recommend you check the following articles and contact your server system or motherboard manufacturer (original equipment manufacturer or OEM) for OS compatibility information.
Operating System Compatibility and Intel® Xeon® Processors
Hardware requirements based on Microsoft:
Please let us know if there is anything else that we can help you with.
Intel Customer Support Technician
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