stress test

Hello, I have some hardware I'd like to throw some tests at and I have not been overclocking for quite some time so I'm out of the loop. I read somewhere that Memtest86 is out when testing DDR5. No idea if that is true? Anyways, any up to date recommendations on software that are bootable (IE...

When running a stress test, I don't want to have to constantly look at the computer screen to make sure that the temperature stays at a reasonable level. Does anyone know of a way to either have the computer shut itself off or to alert me when the temperature gets too high (for example, be...