Super User Asked by Thalles Portilho on January 3, 2021
I set up a Desktop with the following components:
When I first turned on the computer, the RAM was running at 2133Mhz each. My motherboard specification says it can run RAM at 3200Mhz without overclocking. So, why do I need to use D.O.C.P. (Direct Over Clock Profile) to get my RAM running at their full speed (3200MHz)? Shouldn’t it be just plug and go? Why do I need to overclock them to get it running at the expected speed?
The reason I am asking about this, is because I discovered that the D.O.C.P. (Direct Over Clock Profile) mode was causing screen flickering and crashes on my computer.
RAM starts at baseline speeds so as to work 'out of the box'. Your motherboard has a RAM speed spec, and so does your CPU. CPU's can run RAM at various speeds based upon the kind of chips and how much RAM you install. You should reference your CPU's manual to determine the best speed to run your 16GB of dual-channel RAM (in 2 sticks.) I suspect it is less than 3200Mhz. For my system, I was able to choose the 2nd XMP profile in the RAM, then bump down the clock speed to make it stable. There are many guides on getting the best stable speed out of your RAM and it can get quite complicated. But you are typically only fighting for a 1-2% speed gain for your overall system.
Answered by Brian on January 3, 2021
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