PC Components: Difference between revisions

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I always test RAM, both new and used, upon receiving it with [https://www.memtest86.com/ Passmark's Memtest86].   
I always test RAM, both new and used, upon receiving it with [https://www.memtest86.com/ Passmark's Memtest86].   
Failing memtest86 means either the ram is bad, your settings are unstable, or your CPU's memory controller isn't good enough for the overclock.   
Failing memtest86 means either the ram is bad, your settings are unstable, or your CPU's memory controller isn't good enough for the overclock.   
Sometimes, XMP speeds can be good with a small amount of ram but will fail with more ram due to a week memory controller (e.g. on Ryzen 1000 CPUs).
Sometimes, XMP speeds can be good with a small amount of ram but will fail with more ram due to a week memory controller, particularly on earlier Ryzen CPUs.


For XMP overclocked ram, it's best not to mix ram models.   
For XMP overclocked ram, it's best not to mix ram models.