ola,
Trying to think of a few releases that do it for me, that don't go for the quantized clubstep grid or the usual academic Fast Fourier Tropes, use computers and related technologies in a refreshing way and sound really visceral and alive, off the top of my head I'd say:
Kevin Drumm - Sheer Hellish Miasma reissue [2007 Editions Mego] John Wiese - Bubble Pulse [2003 Kissy Records] Anthony Pateras & Robin Fox - End of Daze [2009 Editions Mego] O.S.T. - Waetka [2008 Ideal] Hecker - Acid in the Style of David Tudor [2009 Editions Mego]
i think Mego was over since 2004 or something like that... as i also think the computer years are a bit behind, glitch & click & drones & buzz & bass, what's new? i would just keep the good memory of a slightly different list :
pan sonic ( any ) masami akita a.k.a. merzbow ( although i would prefer his analog work ) chicks on speed ( that don't play guitars )
as far as noise is concerned, my favs all use analog equipment :
wolf eyes, incapacitants, macronympha, to live and shave in L.A., kk null, ...
so i can't comment about noise with computers...