I just recently put togeter a shuttle system for my mom. It uses the shuttle sk43G barebones system. Its a Socket A that uses the VIA KM400 + VT8237 chipset. For some reason when i put a 512 MB ddr dim into it it only shows up as 448 mb. I swaped dimms and get the same results. A dim that shows up as 448 in the shuttle system shows up fine as 512 in my computer and also visa versa. I upgraded to the latest bios and still have the same results. Has anyone seen this happen. Could it be a bios setting? if so could someone point me to what i might look for. Or is my MB just messed up? Any help would be greatly appreciated. Thanks.