Monthly Archives: June 2019

Intel’s Optane: Two Confusing Modes. Part 4) Comparing the Modes

Exploding HeadThis post completes The SSD Guy’s four-part series to help explain Intel’s two recently-announced modes of accessing its Optane DIMM, formally known as the “Intel Optane DC Persistent Memory.”

Comparing the Modes

In the second and third parts of this series we discussed Intel’s Memory Mode and the company’s App Direct Mode.  This final part aims to compare the two: When would you use one and when the other?

There’s really no simple answer.  As with all benchmarks, certain applications will perform better with one mode than with another, while other applications will behave the opposite way.  Adding to the problem is the fact that App Direct Mode actually supports not one but four different access methods, which will be further explained below.  As a rule of thumb performance for large serial accesses might be Continue reading