Windows has a proposed memory encryption option along with memory compression.
Both Intel and AMD are working on embedding this into their CPUs.
However, the target use appears to be servers with multiple VMs, not laptops.
Both Intel and AMD are working on embedding this into their CPUs.
However, the target use appears to be servers with multiple VMs, not laptops.
That said, previous side-channel attacks on CPUs have shown it possible to attack encrypted memory (https://www.usenix.org/conference/usenixsecurity21/presentat...), targetting the cache as the CPU decrypts memory for normal operation. While it'll stop memory dumps from being effective, encrypted RAM won't be the end of dumping keys from memory, especially for patient or highly-skilled attackers.
https://techcommunity.microsoft.com/blog/windowsosplatform/m...
Memory compression has been around for ages, at least since Windows 10 RTM. All major operating systems have implemented this feature -- it has no relation to security, though.