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It's hard to find information about an engineering sample processor. This is because they are pre-production processors loaned to Intel's Original Equipment Manufacturers (OEMs)
See here for more details:
Try this link for information about e5-2600v3 processors.
Allan: I understand about ES info, but I can´t find any data about a final version one: E5-2666V3 SR1Y7, I have some of these ones but Intel haven´t published any kind of info (cores, threads, frecuency, etc.) about this specific model. Can somebody help me and send me a link or any data sheet about this specific version.
Thanks in advance