If the XPS-435 uses Intel-X58-chipset with Triple-Channel memory ...  There are 2-memory banks (each comprised of 3 slots). You install memory DIMMs in perfectly-matched sets of 3.  I think 4gb is the limit. What you have there doesn't even sound like a valid memory config. If it works at all, it's likely running in Single-Channel. CPU-ID's CPU-Z can tell you. [URL]#M1614
Sorry if this has been asked numerous times already but I'm new here. I have a Dell 0X501H motherboard with six DDR3 memory slots. Four of the slots are filled with 2GB cards for a total of 8GB RAM. Two of the slots are empty.  From what I can tell the motherboard has a 24GB capacity. So can I add two more memory cards at 8GB each, or can I only add two more at 2GB each since that is what the other cards are? Thanks.
Studio XPS 435T, RAM upgrade