It reduces the memory capacity and the memory performance, in comparison with real ECC. Nevertheless, this will rarely matter for the kind of applications typi

It reduces the memory capacity and the memory performance, in comparison with real ECC. Nevertheless, this will rarely matter for the kind of applications typically run on small computers with Atom CPUs, which are rarely more demanding than a router/firewall or a network-attached storage server. You can see examples of performance decrease with IBECC here: https://www.cnx-software.com/2024/05/26/odroid-h4-plus-review-intel-n97-nas-kit-fanless-sbc-ubuntu-24-04/ https://www.cnx-software.com/2024/05/26/odroid-h4-plus-revie... For most applications the performance decrease should be less than 10%. The Intel IBECC controller includes a special cache memory, to decrease the number of additional memory accesses required by IBECC. Otherwise the memory performance would have been halved.