I've got an old "Asus P5Q-E" motherboard and i wonder if i should install Intel(R) Matrix Storage Manager Driver V18.104.22.1683 and Intel(R) AHCI/RAID Driver Disk 7 (which i've done everytime i've done a clean install of Windows 7 up til now) or the much newer drivers called Intel® Rapid Storage Technology (Intel® RST) RAID Driver? I don't use my two ssds in a RAID configuration and the older one seems to support both AHCI ands RAID, that's why im asking, .
Motherboard: Asus P5Q-E
CPU: Intel Core 2 Quad 9550
SSD: Intel 530 series 120GB
Ram: 8GB DDR2 800mhz
GPU: Asus GTX770
You can try installing the newer one. If it will not work on your hardware, the installer should, in theory, tell you so. If it works, you will get the benefit of any bug fixes that have been included since the original. Not sure whether this will improve your performance any, however...
Well, you have come to the wrong forum for this query. Go to the Chipset forum and ask the question there if you really, really want an official answer from Intel (if indeed they will provide one; they are not going to give an official answer if this is a configuration they haven't explicitly tested).
I personally would just try it and see; it should abort the install if the hardware is insufficient to support, or is incompatible with, the new(er) driver. If you do try, make sure you have a backup you can recover from if something goes wrong -- and make sure you can actually restore from this backup beforehand; I have seen situations where, when folks get to the point where they actually need to use a backup, they discover that they cannot recover using them. If you are doing a fresh install anyway, no harm no foul; if it doesn't work, just start again...