Xeon's behaviour on a ROG motherboard

Hello, this is the first time I’m using a locked Xeon so few of my doubts could sound obvious to many. In this case I’m using a Rampage IV Gene with a E5-2680 v2 cpu and 2133mhz ripjaws z 4x4gb memory. Enabling xmp profile still doesn’t allow the system to boot unless I downclock the memory to 1866Mhz, is that normal? I do see a correct cpu target of 3600Mhz but while executing cinebench with all cores enabled it doesn’t go beyond 3.1Ghz. Are these things normal for a locked Xeon or am I missing something? Thanks for any advice you might have!

I am no expert at all but according to the Ark the max memory is indeed 1866MHz. The CPU can turbo to 3.6GHz but the base is 2.8GHz, the turbo is the max single core speed so cinebench working on all of them would reduce that max all core turbo.

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