Please describe the process by which the BIOS identifies new memory. I do not seem to find any threads that relate to this.
Thanks in advance.
I appreciate your help
AZ

The BIOS basically just counts the RAM everytime the computer is booted/rebooted. There's a BIOS option on most systems to enable/disable the "quick boot" which skips the double-verified RAM count. I always leave this at disabled because there are numerous RAM testers that can do a better job of testing the RAM than the BIOS.

The way the BIOS counts the RAM is by having the memory controller probe the module(s) installed. It probes for number of modules, number of banks, number of RAM chips and their density, and comes up with a total amount of RAM based on that. It also probes the installed RAM for SPD info, but that's unrelated to the size.

Thank you very much

It also probes the installed RAM for SPD info, but that's unrelated to the size.
What is SPD??
Thanks
AZ

Here's (http://www.pcguide.com/vb/showthread.php?t=37196) a nice thread related to SPD (post #13), explains it all.