Another option is the related memtest86+ (https://www.memtest.org/), which can be found as a package on many Linux distributions (and the package often adds it to the grub menu), and on some Linux distributions it's even on the installation DVD (so you can use it to test the memory before installing).
For a while, it didn't run on UEFI (it required legacy boot), but recent versions now run on both UEFI and legacy BIOS boot.
For a while, it didn't run on UEFI (it required legacy boot), but recent versions now run on both UEFI and legacy BIOS boot.