In theory you'd be correct. But some motherboards, even when they're not operating under the constraints of 32 bit addressing, can't handle more than a certain

In theory you'd be correct. But some motherboards, even when they're not operating under the constraints of 32 bit addressing, can't handle more than a certain amount of memory. In my case, my laptop's motherboard can only handle a maximum of 8GB. This is a fairly common problem: http://superuser.com/questions/308310/what-limits-a-motherboard-from-supporting-more-memory http://superuser.com/questions/308310/what-limits-a-motherbo...