Why Task Manager shows 1333 Mhz and not 2666 Mhz despite adding 2*2GB 1333 Mhz (DDR3 KIT) and CPU-Z shows Dual Channel & DRAM Frequency at 665 Mhz? - Quora
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motherboard - Why is my memory running at 665Mhz when the BIOS is clearly set to be higher? - Super User
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CPU Z says dram as 665mhz only but i have installed 2666mhz DDR4 (so it should show 1333mhz) - Dell Community
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