6.4 GT/s QPI (3200 MHz). Please don't remove the mark of "Ibk" on surface if you want to return. "Serial number" will be described on CPU case.
The item "Matched Pair of Intel Xeon X5670 2.93GHz Six Core SLBV7 Processor withGrease" is in sale since Thursday, January 26, 2017. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\CPUs/Processors". The seller is "wychoi63" and is located in Incheon, South Korea. This item can be shipped worldwide.