In the past for my own use I have just combined max memory to the board and ususally gotten good results, but now I am planning on building a system for a person in the business of web design. I want to combine the right parts to make the system perform at peak efficiency. I am seeking information on the voltage ratings between the motherboard and memory. I have selected the MSI K9N Platinum which supports 1.8v DDR2 memory, and selected Mushkin DDR2 800 Dual-Channel rated for 1.9v. I realize that this is extremly minor difference, but say I was to step up to memory rated for 2.0v. What does this do? Does the memory not perform to peak because of the lesser voltage? Do I risk motherboard damage because the memory is pulling more voltage than the rating? I would appreciate any info on this subject or a link to read up on the subject. Thanks!