8gig ddr3 in my HP Pavilion dv8 laptop.
8gig ddr2 in my Dell XPS Gen5 desktop.
Look at the the newest best HP desktop RAM options: 24GB DDR3-1066MHz SDRAM [6 DIMMs]
What does a desktop need that for?:dunno:
To use Adobe Photoshop at its maximum performance they recommend 8gig ram.
Vista...