I had one brand of ram that would not work in my a7n8x. Unfortunately, I can't remember which is was. My ADATA wroks great. Just so you know, don't spend a tone of cash on fast memory, especially if you are using a SATA drive. The max fsb my a7n8x is about 190, but since there is no lock on the SATA controller, SATA drives are totally unstable at even 180 FSB. If you use IDE....you will be okay.....up to about 180-200 fsb, depending on luck (assuming you are OC'ing).