I run both Win 7 and Archicad on a OCZ Revodrive X2 PCI-e harddrive and have gone from a 15min save time down to 1:30min (a 1.1gig file without layouts), General performance is great with startup delay a thing of the past.
AC27 i9 11900K / 128G ram / GTX 3090 / D5 Render