Hello friends, I am in a similar predicament to Gforcejames. I also have a Dell 390 Workstation, though I have the Cedar Mill Pentium 4 chip and respective board. I am looking to upgrade motherboard and processor to the Core i7 variety. I need help discerning whether there is a motherboard on the market that will fit in my dell case. I wish I could tell you the form factor (i.e. ATX, BTX, etc.), but I am unable to find that info on my own. Thanks a bunch for input in advance.