~~Probably however Graviton3 instances will not be going away any time soon (Grav2 instances are still around). They'll likely fill a different niche where the

~~Probably however Graviton3 instances will not be going away any time soon (Grav2 instances are still around). They'll likely fill a different niche where the Grav4 instances are going to be better for larger workloads that can make use of the whole CPU whole Grav3 instances will be available for people with smaller workloads.~~ Edit: Nevermind. A reply confirms the memory uplift is per core.