If you have not got a directx 10 graphics, there is no reason what so ever to install vista.
I have a pc with a core 2 duo 2.4ghz, 2 gig of ram, 8800 gts 640 mb grapgics card and approximatlet 640 gigs of hard drive space. A 22” and 19” set of monitors for dual display. Pretty average eh!
Well I first installed Windows Vista Ultimate 64bit edition and everything was great; until I checked to see how much of my system ram was being used. A whole 1 gig had disappeared. It decided to allocated 750 MB of my main ram to the graphics card which already has 640MB. WTF; that’s coming straight off.
So I next installed the Home Premium edition 64 bit and all of a sudden the amount of ram used by Vista was 400MB, which is a whole better.
With the Window xp premium 32 bit edition; the OS only uses 250MB. So unless to really want to play Halo 2 on your PC; I wouldn’t upgrade yet. It cost me 800 dollars (400 UK pounds) for the Ultimate edition and that went straight back to the Web site I bought it and I settled on the premium edition that only cost 160 dollars (80 UK pounds).
If after reading this, you decide to go for a dual boot system; then I would advise you have XP installed on your second drive/partition. If it is on the first drive/partition, Vista will install over the top. It didn’t give me the option to install to another drive. It just installed straght away and that ways that.
I hope this little review of Vista is of use to someone.