Are high sample rates better for DSP? Options

[Ethan Winer]

I've read many times that audio plug-ins such as equalizers work better at higher sample rates, even if audio generally doesn't benefit. It seems unlikely that there's a practical advantage to up-sampling all your files, or recording at 96 KHz in the first place, but is there a potential theoretical improvement? Or is this just another Internet myth?

--Ethan

[extrabigmehdi]

That's interesting, so basically if you want to "remaster" a track :
let's say denoising, eq, exciters, reverb, stereo ehancers , and why not slight loudness compression,
it would be better to upsample first, and then downsample once the work is done ?

I'm not so sure that even with a big dsp chain, upsampling is worth it, or at least that a difference could be perceived, but I prefer to do it anyway.
However, this increase cpu use.