Hi Facing similar query. My system came with 16 GB or RAM at 3200Mhz. I recently bought 32 GB to replace it however it is only running at 2133 MHz instead of 3200 MHz. I bought this RAM: Corsair VENGEANCE LPX DDR4 RAM 32GB (2x16GB) 3200MHz CL16 Intel XMP 2.0 Computer Memory - Black (CMK32GX4M2E3200C16) Unless i am doing something very dumb, I can't see an obvious way to change the RAM speed in the bios as it will only let me select from the blue options.
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