I have a Supermicro X9DRi-F dual socket motherboard that I'm purchasing memory for. I'm looking to populate all 16 memory slots with 16GB RDIMMs. My question is regarding memory speed. I'm using v2 Xeon processors, which support up to 1866MHz. However, looking at the memory chart for my motherboard (below), am I understanding it correctly that if all 16 memory slots are populated, dual rank memory rated at 1866MHz will only run at 1600MHz? In other words, is there basically no point in purchasing 1866MHz memory if I plan to populate all memory slots?
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