dmidecode showing less Memory Capacity than Motherboard spec?

view story

http://serverfault.com – We got a supermicro server, http://www.supermicro.com/products/system/1u/5016/sys-5016i-ur.cfm, according spec, the server supports up to 32G memory when using ECC Register Memory. However, when I tried the dmidecode command, it says 24G max memory: [root@c1 ~]# dmidecode | grep Maximum Maximum Size: 256 kB Maximum Size: 1024 kB Maximum Size: 8192 kB Maximum Memory Module Size: 4096 MB Maximum Total Memory Size: 24576 MB Maximum Capacity: 24 GB Maximum Value: Unknown Which one I should trust? (HowTos)