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by konceptz 2945 days ago
Linus did a video about Optane I found helpful.

https://youtu.be/cwy4ujt0qHM

3 comments

This video is about the Optane devices you place in M2/nvme slots to be used as cache.

It will be interesting to see the real benchmarks on this DIMMS. We all want to know if they're comparable to real DDR4 memory.

The current market is terribly overpriced (there's some debate on if there's price fixing with the big three or if it's a genuine shortage/supply problem with the Note recalls and new phone releases). DDR4 is nearly double the price it was the last time I did a build over a year ago. :-/

EDIT: Looks like these chips will be specialized for certain server boards/CPUs and only share the DIMM interface and not protocol.

Thanks for the clarification, I'm watching the video now and it's interesting (Optane is way cheaper than I expected) and still seems useful as a lower bound for what we can expect from the DIMM version.
Thanks for the link! The Blender benchmark is really telling. Using Optane M2 modules as a swap disk allowed to run a task that required 12GB on a system with 4 GB of RAM and it took just 1.8 more in time then the native RAM case. So I guess I can put those Optane modules into a laptop with 16GB of RAM and run a calculation that requires 64GB of memory and it will be much cheaper than a laptop with 64GB of RAM.
But what is the price difference between an Optane module and the equivalent size of RAM?
This is not the Linus I was expecting.
hehe .. indeed, the Linus you were expecting would have been a mailing list post.